MCQs > Engineering & Manufacturing > Aerospace & Aeronautical Engineering MCQs > Aerospace Materials & Processes MCQs

Aerospace Materials & Processes MCQ

In what discipline is special relativity the generally accepted and experimentally well-confirmed physical theory regarding the relationship between space and time?

Answer

Correct Answer: Physics

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Spacecraft propulsion is any method used to what?

Answer

Correct Answer: Accelerate spacecraft

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The design of spacecraft covers a broad area which includes the design of both what?

Answer

Correct Answer: Robotic spacecraft

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What are spacecraft that are used for human spaceflight called?

Answer

Correct Answer: Spaceships and space stations

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What is used for a variety of purposes?

Answer

Correct Answer: Spacecraft

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All spacecraft except what require a launch vehicle?

Answer

Correct Answer: Single-stage-to-orbit vehicles

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How many people can be on a spacecraft when it's transporting them into space?

Answer

Correct Answer: With or without humans on board

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Spaceflight can occur with spacecraft with or without what?

Answer

Correct Answer: Humans on board

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What are common everyday services that rely on space infrastructure?

Answer

Correct Answer: Weather forecasting, remote sensing, GPS systems, satellite television

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What is a novel environment that requires new tools and techniques?

Answer

Correct Answer: Space

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What is one example of an everyday service that is critically dependent on space technology?

Answer

Correct Answer: Weather forecasting

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Space suits have been used to do what?

Answer

Correct Answer: Earth orbit

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What is an example of extravehicular activity?

Answer

Correct Answer: Work done outside spacecraft

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In addition to pressure, modern space suits contain other systems to minimize how much effort is needed to bend what?

Answer

Correct Answer: Limbs

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What is a space station commonly used as?

Answer

Correct Answer: Artificial satellite

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What is a space station also known as?

Answer

Correct Answer: Orbital station or an orbital space station

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What vehicle takes people and cargo to and from the ISS?

Answer

Correct Answer: Other vehicles

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What is the name of the fully operational space station?

Answer

Correct Answer: International Space Station

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What is the SSME known as by its alternate name?

Answer

Correct Answer: Space Shuttle main engine

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What kind of fuel was used in the SSME?

Answer

Correct Answer: Liquid

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How much liquid oxygen was in the Space Shuttle external tank?

Answer

Correct Answer: Liquid oxygen oxidizer

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How long after MECO did the ET get jettisoned?

Answer

Correct Answer: 10 seconds

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How many operational flights did the Space Shuttle go through?

Answer

Correct Answer: 82

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What was the name of the Shuttle program's official program name?

Answer

Correct Answer: Space Transportation System

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How many missions were flown with a Shuttle between 1981 and 2011?

Answer

Correct Answer: 135

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How many orbital test flights occurred before operational flights began?

Answer

Correct Answer: Four

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How many complete shuttle systems were built?

Answer

Correct Answer: Five

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What is the name of the unpowered glide flight that follows the spaceflight?

Answer

Correct Answer: Return to landing

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When are space planes in space?

Answer

Correct Answer: When it is in space

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What type of propulsion can be used to reach space?

Answer

Correct Answer: Rocket based

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A space plane can be thought of as an aircraft that can do which two things?

Answer

Correct Answer: Endure and maneuver in the vacuum of space or likewise

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What type of fountain can reach into space?

Answer

Correct Answer: Space fountain

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What can't support a static tower of this height?

Answer

Correct Answer: Materials

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A space elevator is also called what?

Answer

Correct Answer: A tether

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What would be the main component of a space elevator?

Answer

Correct Answer: Cable

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What type of pressure does the SAS apply against the skin?

Answer

Correct Answer: Stable

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What are the elastic garments used in a space activity suit called?

Answer

Correct Answer: Skintight

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What is the sudden increase in aerodynamic drag and other undesirable effects experienced by an aircraft or other object when it approaches the speed of sound?

Answer

Correct Answer: The sound barrier

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The sound barrier is the sudden increase in what?

Answer

Correct Answer: Aerodynamic drag and other undesirable effects

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What were the earliest rockets made of?

Answer

Correct Answer: Solid-fuel rockets powered by gunpowder

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What is another name for a solid rocket?

Answer

Correct Answer: Solid-propellant rocket

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What is a solid of revolution?

Answer

Correct Answer: A solid figure obtained by rotating a plane curve around some straight line

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What does the solar thermal rocket not need?

Answer

Correct Answer: An electrical generator

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What are solar sails called?

Answer

Correct Answer: Photon sails

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What are solar sails also known as?

Answer

Correct Answer: Light sails

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What are solar panels made up of?

Answer

Correct Answer: 6x10 photovoltaic solar cells

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What kind of solar panel absorbs sunlight and generates electricity?

Answer

Correct Answer: Photovoltaic solar panels

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Solar panel's absorb sunlight as a source of energy to generate what?

Answer

Correct Answer: Electricity

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What are field lines in fluid flows called?

Answer

Correct Answer: Streamline

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What are some examples of an object that could be considered a "pathline"?

Answer

Correct Answer: Streamlines, streaklines and pathlines

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What can you do with the stream function?

Answer

Correct Answer: Plot streamlines

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In what dimension can the Lagrange stream function be used?

Answer

Correct Answer: Two

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Who was the first to use the Lagrange stream function?

Answer

Correct Answer: Joseph Louis Lagrange

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What is the meaning of the term "slewing"?

Answer

Correct Answer: Orientation or movement

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What can refer to a spacecraft's orientation or movement in reference to a plane or fixed position?

Answer

Correct Answer: Slew

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What is the term for a reusable vehicle that reaches orbit from the surface of a body without jettisoning hardware?

Answer

Correct Answer: Single-stage-to-orbit

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What is the term usually, but not exclusively, referring to?

Answer

Correct Answer: Reusable vehicles

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A system with a goal of high availability or reliability has a single what?

Answer

Correct Answer: Point of failure

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What's the term for a part of a system that, if it fails, will stop the entire system from working?

Answer

Correct Answer: Single point of failure

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A single point of failure is undesirable in systems with a goal of what?

Answer

Correct Answer: High availability or reliability

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What is the French for "SI"?

Answer

Correct Answer: Système international

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What is the modern form of the metric system?

Answer

Correct Answer: The International System of Units

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How many base units are in the SI system?

Answer

Correct Answer: Seven

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What is a shock wave defined as in physics?

Answer

Correct Answer: A type of propagating disturbance

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What can be carried by a shock wave?

Answer

Correct Answer: Energy

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What is the name of the second moment of area?

Answer

Correct Answer: Area moment of inertia

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What is the unit of dimension when working with the International System of Units?

Answer

Correct Answer: Meters to the fourth power

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How does a scramjet differ from a ramjet?

Answer

Correct Answer: Supersonic throughout the entire engine

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What is another name for a supersonic combustion ramjet?

Answer

Correct Answer: Scramjet

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What kind of physics is schlieren photography meant to study?

Answer

Correct Answer: Supersonic motion

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What do schlieren changes produce?

Answer

Correct Answer: Localized brightening, darkening, or even color changes

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What are schlieren not necessarily visible to the human?

Answer

Correct Answer: Transparent material

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What language do schlieren come from?

Answer

Correct Answer: German

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What is a scalar sometimes described as in physics?

Answer

Correct Answer: A physical quantity that only has magnitude

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What were the original plans for the Saturn rocket?

Answer

Correct Answer: Military satellite launcher

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How many versions of Saturn were built?

Answer

Correct Answer: Three

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What is an artificial object which has been placed into orbit called?

Answer

Correct Answer: Satellite

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What is a natural satellite of Earth?

Answer

Correct Answer: Earth's Moon

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What type of engine is SABRE?

Answer

Correct Answer: Hypersonic precooled hybrid air-breathing rocket

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What is the name of the concept being developed by Reaction Engines Limited for a hypersonic precooled hybrid air-breathing rocket engine?

Answer

Correct Answer: SABRE

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What company is developing SABRE?

Answer

Correct Answer: Reaction Engines Limited

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What may be attached to the top of a rudder in order to turn it by a helmsman?

Answer

Correct Answer: A tiller

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What can be used as a lever arm on a tiller?

Answer

Correct Answer: A stick or pole

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A rudder is primarily used to counter what two things?

Answer

Correct Answer: Adverse yaw and p-factor

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Where do rocket launches take place on the ground?

Answer

Correct Answer: Fixed location

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Where are rocket launches most often done from?

Answer

Correct Answer: A fixed location on the ground

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Rocket propellant is used either directly by a rocket or in what way?

Answer

Correct Answer: To produce the reaction mass

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How is the reaction mass typically produced?

Answer

Correct Answer: With very high speed

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What is the name of the material used to produce the reaction mass in a rocket?

Answer

Correct Answer: Rocket propellant

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What is the name of the propelling nozzle in a rocket engine?

Answer

Correct Answer: Rocket engine nozzle

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The nozzle is used to accelerate what type of products?

Answer

Correct Answer: Combustion gases

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Most rocket engines use what type of propulsive jet?

Answer

Correct Answer: Combustion

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What are vehicles propelled by rocket engines called?

Answer

Correct Answer: Rockets

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What does the term "rocket" mean in Italian?

Answer

Correct Answer: Bobbin

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What do rockets obtain thrust from?

Answer

Correct Answer: A rocket engine

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What is the Italian word for bobbin?

Answer

Correct Answer: Rocchetto

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Where was the RL-10 built?

Answer

Correct Answer: United States

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In what decade was the RL10 first developed?

Answer

Correct Answer: 1950s

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When did the RL10 first fly?

Answer

Correct Answer: 1961

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What is the name of the dimensionless number used to describe flow patterns in fluids?

Answer

Correct Answer: Reynolds number

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What is another name for Reynolds number?

Answer

Correct Answer: The Reynolds number

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What happens to liquids when they are exposed to eddy currents?

Answer

Correct Answer: Cavitation

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What type of flow has a high chance of cavitation?

Answer

Correct Answer: Liquid

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What is a space launch system intended to allow for recovery of?

Answer

Correct Answer: All or part of the system

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What are some of the challenges of creating a reusable launch system?

Answer

Correct Answer: Design issues

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What is a space launch system intended to allow for?

Answer

Correct Answer: Recovery of all or part of the system for later reuse

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What is the name of the spacecraft propulsion method that provides thrust by heating a fluid?

Answer

Correct Answer: Resistojet

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What is the name of the rocket that uses resistojet technology?

Answer

Correct Answer: Resistojet rocket

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What was the name of the inspection device used to check the Shuttle's exterior?

Answer

Correct Answer: Orbiter Boom Sensor System

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What are Shuttle Remote Manipulator System arms also known as?

Answer

Correct Answer: Canadarm

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What is the threshold velocity for relativistic rocket meaning?

Answer

Correct Answer: 30% to 50% of the speed of light

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What is the difference between relativistic mass and rest mass at 50% of c?

Answer

Correct Answer: 15%

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What is the change in direction of a wavefront at an interface called?

Answer

Correct Answer: Reflection

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What are some examples of reflection?

Answer

Correct Answer: Light, sound and water waves

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What is the second type of entry?

Answer

Correct Answer: Controlled entry

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What is the term for controlled entry?

Answer

Correct Answer: Reentry

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What type of movement is reentry?

Answer

Correct Answer: Atmospheric entry

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What is the name of the rocket envisioned by Karl Schroeder?

Answer

Correct Answer: Redshift rocket

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Who conceived of the redshift rocket?

Answer

Correct Answer: Karl Schroeder

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What is the term used to describe the use of thrusters to provide translation?

Answer

Correct Answer: Reaction control system

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What is the RCS system used to provide?

Answer

Correct Answer: Attitude control

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What is the rate of climb in feet per minute?

Answer

Correct Answer: Ft/min

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What is an example of an airbreathing jet engine?

Answer

Correct Answer: Ramjet

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What type of vehicle requires an assisted take-off?

Answer

Correct Answer: Ramjet-powered

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Ramjets cannot produce thrust at what?

Answer

Correct Answer: Zero airspeed

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What can't ramjets produce at zero airspeed?

Answer

Correct Answer: Thrust

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What is a device for accelerating projectiles called?

Answer

Correct Answer: Ram accelerator

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Ram accelerator is a device for what?

Answer

Correct Answer: Accelerating projectiles or just a single projectile

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What type of weapon is a railgun?

Answer

Correct Answer: A weapon

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Which motor principle is used in the railgun?

Answer

Correct Answer: Homopolar

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What is the name of the device which uses a pair of rails to accelerate its armature?

Answer

Correct Answer: Railgun

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What kind of motor is the railgun based on principles similar to?

Answer

Correct Answer: Homopolar motor

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What type of power does a railgun use?

Answer

Correct Answer: Electromagnetic force

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What does a railgun launch?

Answer

Correct Answer: High velocity projectiles

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What is the act of measuring the direction to a radio source called?

Answer

Correct Answer: Radio direction finding

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What is the act of measuring the direction is known as?

Answer

Correct Answer: Radio direction finding or sometimes simply direction finding

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What is the main purpose of radar?

Answer

Correct Answer: To determine the range, angle, or velocity of objects

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What type of detection system uses radio waves to determine range, angle, or velocity?

Answer

Correct Answer: Radar

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What does a propulsion system consist of?

Answer

Correct Answer: A source of mechanical power

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What is a propulsor?

Answer

Correct Answer: Means of converting this power into propulsive force

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Where were pulsed plasma thruster first used?

Answer

Correct Answer: Soviet probes

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What are generally considered the simplest form of electric spacecraft propulsion?

Answer

Correct Answer: PPTs

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When did the first PPTs fly?

Answer

Correct Answer: 1964

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In the case of a PIT, what are the fields used to propel the propellant?

Answer

Correct Answer: Electric and magnetic fields

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A pulsed inductive thruster is also called what?

Answer

Correct Answer: PIT

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What are the proper orbital elements of an orbit?

Answer

Correct Answer: Constants of motion of an object in space

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What type of propeller is manually variable to a few set positions?

Answer

Correct Answer: Blade pitch

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What does the propeller convert from the engine?

Answer

Correct Answer: Rotary motion

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What type of propeller is variable to a few selected positions?

Answer

Correct Answer: Manually variable to a few set positions

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What is the name of the class of rocket engine designs known as?

Answer

Correct Answer: Pressure-fed engine

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What is used to pressurize the gas tanks of pressure-fed engines?

Answer

Correct Answer: Helium

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In what part of the atmosphere is the pressure altitude of interest?

Answer

Correct Answer: International Standard Atmosphere

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What is the altitude in the International Standard Atmosphere with the same atmospheric pressure as that of the part of the atmosphere in question?

Answer

Correct Answer: Pressure altitude

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What is the definition of precession?

Answer

Correct Answer: A change in the orientation of the rotational axis of a rotating body

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A change in what can be defined as a change in the first Euler angle?

Answer

Correct Answer: Precession

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What is the name of the theoretical construct in flow physics?

Answer

Correct Answer: Prandtl –Glauert singularity

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The Prandtl Glauert singularity is sometimes used to explain vapor cones in what type of flows?

Answer

Correct Answer: Transonic flows

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What is pogo oscillation a metaphor for?

Answer

Correct Answer: The bouncing of a pogo stick

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What causes variations in engine thrust in pogo oscillation?

Answer

Correct Answer: Combustion instability

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What does Pogo oscillation compare to?

Answer

Correct Answer: Pogo stick

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What type of nozzle includes a plug around which the working fluid flows?

Answer

Correct Answer: Plug nozzle

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What are some examples of devices that use plug nozzles?

Answer

Correct Answer: Aircraft, rockets

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What kind of field do you need to generate plasma?

Answer

Correct Answer: Electromagnetic

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What state of matter was the first to be described by a chemist?

Answer

Correct Answer: Plasma

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What do physics studies?

Answer

Correct Answer: Matter, its motion, and behavior

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What is the main goal of physics?

Answer

Correct Answer: To understand how the universe behaves

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What does "physical science" mean when it's used with the term "branch"?

Answer

Correct Answer: A branch

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The perpendicular axis theorem can be used to determine what about a rigid object?

Answer

Correct Answer: The moment of inertia

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The perpendicular axis theorem can be used to determine the moment of what?

Answer

Correct Answer: Inertia of a rigid object

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What does the theorem state can be used to determine the moment of inertia of a rigid object?

Answer

Correct Answer: The perpendicular axis theorem

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What was used to slow the Gemini capsule after landing?

Answer

Correct Answer: Conventional parachutes

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The use of Parawings in the recovery of NASA Space Capsules was considered for what year?

Answer

Correct Answer: 1964

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Who invented the Parawing?

Answer

Correct Answer: Francis Rogallo

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What kind of drag is caused by moving through air?

Answer

Correct Answer: Aerodynamic drag

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What does parasitic drag describe?

Answer

Correct Answer: Drag that results when an object is moved through a fluid medium

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What is the combination of form drag, skin friction drag and interference drag?

Answer

Correct Answer: Parasitic drag

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What parallel axis rule can be used to determine the second moment of area of a rigid body?

Answer

Correct Answer: Parallel axes rule

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Who named the theorem after them?

Answer

Correct Answer: Christiaan Huygens and Jakob Steiner

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In what field is the Kepler Orbit an elliptic or other conic one?

Answer

Correct Answer: Astrodynamics

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In astrodynamics, the osculating orbit of an object is what?

Answer

Correct Answer: Kepler orbit

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What was the name of the 50 foot long boom on board NASA's shuttles?

Answer

Correct Answer: Orbiter Boom Sensor System

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How much longer did the Canadarm have after the Orbiter Boom Sensor System was attached?

Answer

Correct Answer: 100 feet

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What kind of sensor system is on the Orbital Boom?

Answer

Correct Answer: Boom Sensor System

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What is the name of the system that looks for approaching objects?

Answer

Correct Answer: Orbiter Boom Sensor System

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What is the term for any maneuver needed to keep a spacecraft in a particular assigned orbit?

Answer

Correct Answer: Orbital station-keeping

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What is the name of the science of orbital stationkeeping?

Answer

Correct Answer: Astrodynamics

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What is the time it takes an asteroid or a planet to orbit the sun?

Answer

Correct Answer: Orbital period

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The orbital period is the time a given astronomical object takes to complete one orbit around what?

Answer

Correct Answer: Another object

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A non-inclined orbit is contained in what plane?

Answer

Correct Answer: The reference plane

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A non-inclined orbit is contained in the reference plane, which contains what else besides the orbital node?

Answer

Correct Answer: No nodes

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What discipline is applied to the motion of rockets and spacecraft?

Answer

Correct Answer: Orbital mechanics

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Orbital mechanics is the application of what two disciplines?

Answer

Correct Answer: Ballistics and celestial mechanics

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What is an orbital maneuver called in spaceflight when a spacecraft is near Earth?

Answer

Correct Answer: Deep-space maneuver

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What is an example of an orbital plane change?

Answer

Correct Answer: Orbital inclination change

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What is another term for Orbital inclination change?

Answer

Correct Answer: Orbital plane change

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What is the measure of an object's tilt around a celestial body?

Answer

Correct Answer: Orbital inclination

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Orbital inclination measures the tilt of an object's orbit around a what?

Answer

Correct Answer: Celestial body

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What are the parameters required to uniquely identify a specific orbit?

Answer

Correct Answer: Orbital elements

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What are orbital elements?

Answer

Correct Answer: Parameters required to uniquely identify a specific orbit

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What is the name of the parameter that determines the amount by which the orbit of an astronomical object deviates from a perfect circle?

Answer

Correct Answer: Orbital eccentricity

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What is the orbital eccentricity of an object if its value is 0?

Answer

Correct Answer: Circular orbit

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When is orbit phasing used?

Answer

Correct Answer: In scenarios where a spacecraft in a given orbit must be moved to a different location

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What is used to adjust the time and position of spacecraft along its orbit?

Answer

Correct Answer: Orbit phasing

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What does orbit mean in physics?

Answer

Correct Answer: The gravitationally curved trajectory of an object

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In which field is an orbit considered "regular"?

Answer

Correct Answer: Physics

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What is used to direct or modify the flow of a fluid?

Answer

Correct Answer: A nozzle

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What is a nozzle used to modify?

Answer

Correct Answer: The flow of a fluid

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What is the name of the important problem with nose cone design?

Answer

Correct Answer: Nose cone geometrical shape

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Another problem with nose cones is that they are made of what?

Answer

Correct Answer: Compressible fluid medium

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How many laws are contained in Newton's laws of motion?

Answer

Correct Answer: Three

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What is the name of the derived unit of force?

Answer

Correct Answer: Newton

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Newton is named after because of his work in which discipline?

Answer

Correct Answer: Classical mechanics

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What kind of substances are described by the Navier-Stokes equations?

Answer

Correct Answer: Viscous fluid

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The equations were named after who?

Answer

Correct Answer: Claude-Louis Navier and George Gabriel Stokes

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What is the civilian space program?

Answer

Correct Answer: The National Aeronautics and Space Administration

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What is the civilian space program called?

Answer

Correct Answer: National Aeronautics and Space Administration

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What does NASA research and implement?

Answer

Correct Answer: Aeronautics and aerospace research

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Where did the first widespread description of nanotechnology refer to?

Answer

Correct Answer: Macroscale products

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What is the earliest, widespread definition of nanotechnology?

Answer

Correct Answer: Fabrication of macroscale products

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What does a multistage rocket contain?

Answer

Correct Answer: Engines and propellant

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What is another term for multistage rocket?

Answer

Correct Answer: Step rocket

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What is the change in position of an object relative to its surroundings?

Answer

Correct Answer: Motion

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Motion is mathematically described in terms of what four things?

Answer

Correct Answer: Displacement, distance, velocity, acceleration

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What type of rocket doesn't use more than one propellant?

Answer

Correct Answer: Monopropellant

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What type of rocket has a single chemical as its propellant?

Answer

Correct Answer: Monopropellant rocket

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What is the main propellent used in monoprop rockets?

Answer

Correct Answer: Chemical

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What are momentum wheels used for?

Answer

Correct Answer: Three axis attitude control

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How is a momentum wheel used for spacecraft?

Answer

Correct Answer: Attitude control

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What is the product of the mass and the velocity in momentum?

Answer

Correct Answer: Linear momentum

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What is the term for the torque needed for a desired angular acceleration?

Answer

Correct Answer: Moment of inertia

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What is another term for the moment of inertia?

Answer

Correct Answer: Angular mass or rotational inertia

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What would use a static magnetic field to deflect charged particles radiated by the sun?

Answer

Correct Answer: Mini-magnetospheric plasma propulsion

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What would a magnetic sail deflect?

Answer

Correct Answer: Charged particles radiated by the Sun

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What type of particles would be deflected by the magnetic sail?

Answer

Correct Answer: Charged

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What system allows aircraft to land without the help of a runway?

Answer

Correct Answer: Microwave landing system

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What type of landing system does the space shuttle use?

Answer

Correct Answer: Microwave

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What does the meter per second specify?

Answer

Correct Answer: Both magnitude and a specific direction

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The metre per second was created by dividing time in what unit?

Answer

Correct Answer: Seconds

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What type of mirror can be found in adaptive optics systems?

Answer

Correct Answer: Membrane mirror

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What are mirrors made on in adaptive optics systems?

Answer

Correct Answer: Thin films of material

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What can be made on metallized PET film?

Answer

Correct Answer: Membrane mirrors

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What discipline is concerned with the mechanics of fluids?

Answer

Correct Answer: Fluid mechanics

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What would you call a linear motor used for space launch?

Answer

Correct Answer: Mass driver

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What is a mass driver referred to as?

Answer

Correct Answer: Electromagnetic catapult

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What property of a body is measured by its mass?

Answer

Correct Answer: Resistance to acceleration

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What is the property of a physical body that is also a measure of its resistance to acceleration?

Answer

Correct Answer: Mass

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What is the name of the thruster type?

Answer

Correct Answer: Magnetoplasmadynamic

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What type of thruster uses the Lorentz force to generate thrust?

Answer

Correct Answer: Magnetoplasmadynamic thruster

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A magsail would use a static what to deflect charged particles radiated by the sun?

Answer

Correct Answer: Magnetic field

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What could a magnetic sail thrust against?

Answer

Correct Answer: Planetary and solar magnetospheres

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What is the dimensionless property in Mach number?

Answer

Correct Answer: The ratio of flow velocity past a boundary to the local speed of sound

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What is the dimensionless number in fluid dynamics called?

Answer

Correct Answer: Mach number

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A lunar space elevator could be used to transport what?

Answer

Correct Answer: A mechanical climbing vehicle

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What is another term for a lunar space elevator?

Answer

Correct Answer: Lunar spacelift

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What is the altitude of a Low Earth Orbit?

Answer

Correct Answer: 2,000 km

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What does LEO mean?

Answer

Correct Answer: Low Earth Orbit

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What is the process in aeronautics and aviation called when a plane cruises over a small region for a certain amount of time?

Answer

Correct Answer: Loiter

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Loiter is a phase of what?

Answer

Correct Answer: Flight

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What type of vehicle is used in lithobraking?

Answer

Correct Answer: Unmanned space vehicles

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What is another term for liquid propellant?

Answer

Correct Answer: Liquid-propellant rockets

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What are the desirable characteristics of a liquid propellant?

Answer

Correct Answer: Reasonably high density

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What are the other types of liquid fuel besides hydrogen fuel?

Answer

Correct Answer: Ethanol, and biodiesel

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What type of engine uses liquid hydrogen to liquefy air?

Answer

Correct Answer: Liquid air cycle engine

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In a liquid air cycle engine, what do you use to liquefy the air?

Answer

Correct Answer: Liquid hydrogen

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What does "lighter than air" mean?

Answer

Correct Answer: Materials (usually gases) that are buoyant in air

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What is the average molecular mass of dry air?

Answer

Correct Answer: 28.97 g/mol

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What is the acronym of the organization that funded the Lightcraft work?

Answer

Correct Answer: Strategic Defense Initiative

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What is the name of the AFRL division that funded Lightcraft research?

Answer

Correct Answer: Advanced Concept Division

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What is a lift coefficient defined as?

Answer

Correct Answer: A dimensionless coefficient

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What is the coefficient used to relate the lift generated by a lifting body to the fluid density around the body?

Answer

Correct Answer: Lift coefficient

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What is a function of the angle of a body to flow?

Answer

Correct Answer: CL

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In what direction does the lift on an airplane act to counter the force of gravity?

Answer

Correct Answer: Upward

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What is the leading edge of an airfoil section?

Answer

Correct Answer: The part of the wing that first contacts the air

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What is the part of the wing that first contacts the air?

Answer

Correct Answer: Leading edge

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What is gravitational law known as?

Answer

Correct Answer: Universal gravitation

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What does the law state that every particle attracts every other particle with?

Answer

Correct Answer: A force

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What is the term for the time period on a given day during which a particular vehicle must be launched?

Answer

Correct Answer: Launch window

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What is the chord parallel to the directrix and passing through the focus called?

Answer

Correct Answer: Latus rectum

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The length of the latus rectum is denoted by what number?

Answer

Correct Answer: 2ℓ

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What is the name of the part of a conic that joins the foci?

Answer

Correct Answer: Midpoint

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What is a latus rectum?

Answer

Correct Answer: Various parameters are associated with a conic section

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What term is used to describe the line joining the foci of an ellipse or hyperbola?

Answer

Correct Answer: Principal axis

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In what area is Neptec Design Group engaged?

Answer

Correct Answer: Space, industrial, and military

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Where is Neptec Design Group based?

Answer

Correct Answer: Ottawa

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What is the purpose of a laser broom?

Answer

Correct Answer: To sweep space debris out of the path of other artificial satellites

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A laser broom would change one side of an object enough to change its orbit and make it hit what sooner?

Answer

Correct Answer: Atmosphere

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What is the term used to describe the points near two large bodies in orbit where a smaller object will maintain its position relative to the large orbiting bodies?

Answer

Correct Answer: Lagrangian points

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In what field are the Lagrangian points called Lagrange points?

Answer

Correct Answer: Celestial mechanics

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What is the purpose of Lagrangian?

Answer

Correct Answer: Reformulation of classical mechanics

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Who reworked classical mechanics?

Answer

Correct Answer: Joseph-Louis Lagrange

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What is the purpose of landing gear?

Answer

Correct Answer: Either takeoff or landing

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What is the last part of a flight?

Answer

Correct Answer: Landing

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In what part of a flight is landing?

Answer

Correct Answer: The last part

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What is a fundamental theorem in aerodynamics?

Answer

Correct Answer: Kutta –Joukowski theorem

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What does the Kutta-Joukowski theorem help calculate?

Answer

Correct Answer: Lift of an airfoil

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What is the name of the principle that is applicable to solid bodies with sharp corners?

Answer

Correct Answer: The Kutta condition

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Who is responsible for naming the Kutta condition?

Answer

Correct Answer: Martin Kutta

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What do the tethers and anchors of a kite do?

Answer

Correct Answer: Create lift and drag

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What is the English word for a tethered heavier-than-air craft with wing surfaces?

Answer

Correct Answer: Kite

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What do kites often have?

Answer

Correct Answer: A bridle and tail

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What is the mass of an object that possesses kinetic energy?

Answer

Correct Answer: A given mass

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In what decade was the Kestrel engine developed?

Answer

Correct Answer: 2000s

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When was the last flight of Falcon 1?

Answer

Correct Answer: 2009

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What is the name of the syndrome proposed by Donald Kessler?

Answer

Correct Answer: Kessler syndrome

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Who proposed the Kessler syndrome?

Answer

Correct Answer: Donald J. Kessler

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When was the Kessler syndrome first proposed?

Answer

Correct Answer: 1978

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What is Kepler's laws of planetary motion described as being?

Answer

Correct Answer: Three scientific laws

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What are Kepler's laws of planetary motion?

Answer

Correct Answer: Three scientific laws describing the motion of planets around the Sun

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What is one of the four main design considerations in aircraft lateral stability?

Answer

Correct Answer: Keel effect

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What is a common term used to describe the keel effect?

Answer

Correct Answer: Pendulum effect

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What are air-breathing jet engines?

Answer

Correct Answer: Turbojets, turbofans, ramjets, and pulse jets

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What type of research does ISRO pursue?

Answer

Correct Answer: Space science research

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Who manages ISRO?

Answer

Correct Answer: Department of Space

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When did ISRO become part of the Department of Space?

Answer

Correct Answer: 1972

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What is the term used for crewed or uncrewed travel between stars or planetary systems?

Answer

Correct Answer: Interstellar travel

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Interstellar travel is the term used for which type of travel?

Answer

Correct Answer: Crewed or uncrewed travel

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Interstellar travel is the term used for crewed or uncrewed travel between?

Answer

Correct Answer: Stars or planetary systems

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What kind of spaceflight is confined to travel between the planets of the Solar System?

Answer

Correct Answer: Interplanetary spaceflight

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What is the practice of interplanetary travel limited to?

Answer

Correct Answer: The Solar System

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What is interplanetary spaceflight usually limited to?

Answer

Correct Answer: Travel between the planets of the Solar System

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What is the name of the ITN's main component?

Answer

Correct Answer: Interplanetary Transport Network

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What does the ITN require very little of?

Answer

Correct Answer: Energy

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What is the transport network called that uses gravity to determine pathways?

Answer

Correct Answer: Interplanetary Transport Network

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The ITN is a collection of what?

Answer

Correct Answer: Pathways through the Solar System

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What are the components of an internal combustion engine called?

Answer

Correct Answer: Pistons, turbine blades, rotor or a nozzle

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What does the "air" in an internal combustion engine do?

Answer

Correct Answer: Oxidizer

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What does the oxidizer usually in an internal combustion engine usually name?

Answer

Correct Answer: Air

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What enables pilots to conduct an instrument approach to landing if they are unable to establish visual contact with the runway?

Answer

Correct Answer: Instrument Landing System

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The ILS enables pilots to do what?

Answer

Correct Answer: Conduct an instrument approach to landing

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What is indicated airspeed measured by?

Answer

Correct Answer: Airspeed indicator

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Indicated airspeed is provided by the system through?

Answer

Correct Answer: Pitot-static

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Indicated airspeed is the airspeed read directly?

Answer

Correct Answer: The airspeed indicator

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What is the goal of HyShot?

Answer

Correct Answer: Supersonic combustion under flight conditions

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What is the name of the group that is conducting the HyShot research project?

Answer

Correct Answer: The University of Queensland, Australia Centre for Hypersonics

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What company previously partnered with The University of Queensland to design the second engine?

Answer

Correct Answer: QinetiQ

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What is one example of the normal physiology?

Answer

Correct Answer: Hypoventilation training or strenuous physical exercise

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What is the condition in which the body is deprived of adequate oxygen supply at the tissue level?

Answer

Correct Answer: Hypoxia

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How is hypoxia classified?

Answer

Correct Answer: Either generalized, affecting the whole body, or local

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What do we roughly say a hyperbolic partial differential equation has?

Answer

Correct Answer: A well-posed initial value problem

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Hyperbolic partial differential equation is a PDE that has a well-posed problem for what?

Answer

Correct Answer: First n − 1 derivatives

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What are a type of differential equation?

Answer

Correct Answer: Hyperbolic

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What is the name of the equation that deals with the rate at which something grows?

Answer

Correct Answer: Hyperbolic partial differential equation

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What discipline is hydrodynamics part of?

Answer

Correct Answer: Fluid mechanics

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What is the study of liquids in motion called?

Answer

Correct Answer: Hydrodynamics

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What is one example of a hybrid rocket?

Answer

Correct Answer: A hybrid-propellant rocket

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What kind of orbit is the Hohmann transfer orbit?

Answer

Correct Answer: Elliptical

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In orbital mechanics what type of orbit is the Hohmann transfer orbit?

Answer

Correct Answer: Elliptical orbit

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3. What is another name for a helicopter?

Answer

Correct Answer: Rotorcraft

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How do helicopters supply their lift?

Answer

Correct Answer: Rotors

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What type of vehicle has rotors?

Answer

Correct Answer: Helicopter

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How are the parts of an object designed to protect the object from overheating?

Answer

Correct Answer: By dissipating

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What is a part of an object designed to protect the object from overheating by dissipating?

Answer

Correct Answer: A heat shield

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A heat shield is a part of an object designed to protect the object from what?

Answer

Correct Answer: Overheating

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What type of thruster is an HET?

Answer

Correct Answer: Ion thruster

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What is another name for an electric field ion thruster?

Answer

Correct Answer: Hall-effect thruster

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What type of thruster is a Hall effect thruster?

Answer

Correct Answer: Ion

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What causes the ocean tides?

Answer

Correct Answer: Gravity

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What does the Moon's gravity cause?

Answer

Correct Answer: The ocean tides

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What can be done to reduce the costs of a gravitational slingshot?

Answer

Correct Answer: Save propellant

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When using a gravitational slingshot, what do you typically do to save propellant and reduce expense?

Answer

Correct Answer: Alter the path and speed of a spacecraft

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What has the gravitational constant to do with?

Answer

Correct Answer: Calculation of gravitational effects

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Gravitational constant is also known as the what?

Answer

Correct Answer: Universal gravitational constant

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What kind of system is GPS?

Answer

Correct Answer: Positioning

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What is the name of the GPS system?

Answer

Correct Answer: Global Positioning System

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What does the term Goddard problem refer to?

Answer

Correct Answer: To optimize the altitude of a rocket

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In what year was the Goddard problem first posed?

Answer

Correct Answer: 1919

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Who owned the GPS system?

Answer

Correct Answer: United States government

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Which organization operates the Global Positioning System?

Answer

Correct Answer: United States Air Force

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What is the most common type of glider without an engine?

Answer

Correct Answer: Motor-gliders

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What is a glider not dependent on?

Answer

Correct Answer: An engine

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With vehicle loading, how does glider glide ratio vary?

Answer

Correct Answer: Little

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What does a heavier vehicle do?

Answer

Correct Answer: Glides faster

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What does a glider's glide ratio vary with?

Answer

Correct Answer: Airspeed

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What is the approximate distance of a geosynchronous orbit?

Answer

Correct Answer: 22,236 mi

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A satellite in what orbit has an orbital period that matches Earth's rotation?

Answer

Correct Answer: Geosynchronous orbit

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A geosynchronous orbit is how far above Earth's surface?

Answer

Correct Answer: 35,786 km

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What is the abbreviation for a geosynchronous orbit?

Answer

Correct Answer: GSO

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A GEO orbit is also called what?

Answer

Correct Answer: Geosynchronous equatorial orbit

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What type of orbit is a geostationary orbit?

Answer

Correct Answer: Circular geosynchronous orbit

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What kind of satellite can monitor changes in ocean environments?

Answer

Correct Answer: Ocean-color monitoring satellites

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What is an example of an open cycle engine?

Answer

Correct Answer: Gas-generator cycle

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What is a name given to engines that use a gas generated in the gas generator?

Answer

Correct Answer: Open cycle

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What is a gravitationally bound system of stars?

Answer

Correct Answer: A galaxy

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What does a galaxy consist of?

Answer

Correct Answer: Stars, stellar remnants, interstellar gas, dust, and dark matter

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What is a flying wing?

Answer

Correct Answer: A tailless fixed-wing aircraft

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What does FANS provide information about to the pilot?

Answer

Correct Answer: Air traffic control clearances

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How many DCDUs are in an A320 cockpit?

Answer

Correct Answer: Two

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What is the Future Air Navigation System also known as?

Answer

Correct Answer: FANS

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What is the French word for "spindle-shaped"?

Answer

Correct Answer: Fuselé

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The main body section of the fuselage holds what?

Answer

Correct Answer: Crew, passengers, and cargo

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In what kind of physics is free fall any motion of a body where gravity is the only force acting upon it?

Answer

Correct Answer: Newtonian physics

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Freefall is any motion of a body where what is the only force acting upon it?

Answer

Correct Answer: Gravity

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What is the motion of an object changed when a force is applied?

Answer

Correct Answer: Its velocity

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What can you describe as a force?

Answer

Correct Answer: A push or a pull

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An object that has mass can be changed by what if it's velocity is changed?

Answer

Correct Answer: Force

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Fluid mechanics is concerned with what?

Answer

Correct Answer: Mechanics of fluids

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Fluid mechanics is concerned with the mechanics of what?

Answer

Correct Answer: Fluids

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What is the branch of physics concerned with the mechanics of fluids?

Answer

Correct Answer: Fluid mechanics

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What type of discipline is fluid dynamics?

Answer

Correct Answer: Fluid mechanics

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What is the study of liquids in motion?

Answer

Correct Answer: Hydrodynamics

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What can a substance with zero shear modulus not resist?

Answer

Correct Answer: Any shear force applied to them

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What do fluids include?

Answer

Correct Answer: Liquids, gases and plasmas

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Fluid are a phase of what?

Answer

Correct Answer: Matter

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What is the name of the device used to measure the fuel levels of modern aircraft?

Answer

Correct Answer: Floatstick

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What are the two tubes in a floatstick?

Answer

Correct Answer: One enclosed within the other

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How many tubes are in a floatstick?

Answer

Correct Answer: Two

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What does a flight management system do?

Answer

Correct Answer: Automates a wide variety of in-flight tasks

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What does the FMS send for display?

Answer

Correct Answer: The flight plan

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What does an FMS do to reduce the workload on the flight crew?

Answer

Correct Answer: Automates a wide variety of in-flight tasks

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What is the primary function of an FMS?

Answer

Correct Answer: In-flight management of the flight plan

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What do modern civilian aircraft no longer carry?

Answer

Correct Answer: Flight engineers or navigators

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To make the helicopter move in a deliberate way, what changes to the helicopter's flight controls?

Answer

Correct Answer: Mechanically

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What causes pitch and roll?

Answer

Correct Answer: Tilt forward and back

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If the controls altered the angle of attack of the main rotor blades cyclically during rotation, what would happen?

Answer

Correct Answer: Creating differing amounts of lift

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Changes to the aircraft flight control system transmit to what?

Answer

Correct Answer: Rotor

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How many components make up a conventional fixed-wing aircraft flight control system?

Answer

Correct Answer: Flight control surfaces, the respective cockpit controls, connecting linkages, and the necessary operating mechanisms

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A conventional fixed-wing aircraft flight control system contains what?

Answer

Correct Answer: Flight control surfaces

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What allow a pilot to adjust and control the aircraft's flight attitude?

Answer

Correct Answer: Flight control surfaces

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What do flight control surfaces allow a pilot to do?

Answer

Correct Answer: Adjust and control the aircraft's flight attitude

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What cause an increase in drag in mid-flight?

Answer

Correct Answer: Flaps

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What are flaps used for when taking off?

Answer

Correct Answer: Extra lift

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What do the wings of a fixed-wing aircraft generate?

Answer

Correct Answer: Lift

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What type of thruster uses liquid metal?

Answer

Correct Answer: Field-emission electric propulsion

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What type of instabilities occur on the Taylor cone?

Answer

Correct Answer: Surface instabilities

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What is used as the propellant in a field-emission electric propulsion device?

Answer

Correct Answer: Liquid metal

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What liquid metal is most commonly used in Electric Propulsion devices?

Answer

Correct Answer: Caesium

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At what value of the applied field is ion extraction from the Taylor cones triggered?

Answer

Correct Answer: High

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What causes ions to be extracted from the tip of Taylor cones?

Answer

Correct Answer: Field evaporation or similar mechanisms

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What liquid metal is used to create a FEEP device?

Answer

Correct Answer: Caesium, indium or mercury

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What does FEEP mean?

Answer

Correct Answer: Field-emission electric propulsion

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What is FEEP a form of?

Answer

Correct Answer: Ion thruster

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What are instabilities that appear on the liquid surface due to the interplay of electric force and surface tension?

Answer

Correct Answer: Taylor cones

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Regardless of the phase of the propellant, the propellant will be used to do what in an expander cycle?

Answer

Correct Answer: Cool the engine's combustion chamber

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What is used during the expander cycle?

Answer

Correct Answer: Fuel

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The fuel in an expander cycle is used to cool the engine's what?

Answer

Correct Answer: Combustion chamber

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What does ESA stand for?

Answer

Correct Answer: European Space Agency

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How many member states are in the European Space Agency?

Answer

Correct Answer: 22

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What are the Euler angles?

Answer

Correct Answer: Three angles

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How many Euler angles are there?

Answer

Correct Answer: Three

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Who introduced the Euler angles?

Answer

Correct Answer: Leonhard Euler

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What are the most general choice of coordinates?

Answer

Correct Answer: Generalized coordinates

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What are normally spatial coordinates?

Answer

Correct Answer: And time

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What dynamic variables are used in equations of motion?

Answer

Correct Answer: Spatial coordinates and time

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In relativity, what are replaced by the functions defined by generalized coordinates?

Answer

Correct Answer: Curved spaces

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What is the term for the energy in a fluid flow?

Answer

Correct Answer: Kinetic energy

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The enstrophy E is useful in the study of what type of flows?

Answer

Correct Answer: Turbulent flows

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What discipline uses the enstrophy E?

Answer

Correct Answer: Aerodynamics

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What branch of economics is Engineering economics focused on?

Answer

Correct Answer: Microeconomics

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What is the basis for the discipline of engineering?

Answer

Correct Answer: Engineering is the application of knowledge

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What is the application of knowledge in the form of science, mathematics and empirical evidence?

Answer

Correct Answer: Engineering

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What can be converted but not created or destroyed?

Answer

Correct Answer: Energy

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What does the law of conservation of energy state?

Answer

Correct Answer: Energy can be converted in form

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Where does the term "empennage" come from?

Answer

Correct Answer: French language

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What do the French word for "to feather an arrow" mean?

Answer

Correct Answer: Empenner

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What type of PDEs have a second order?

Answer

Correct Answer: Linear partial differential equations

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What are second order linear partial differential equations called?

Answer

Correct Answer: Elliptic

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What type of partial differential equation is classified as elliptic?

Answer

Correct Answer: Second order linear

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What do elevators control?

Answer

Correct Answer: Pitch

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Along with pitch, what do elevator control?

Answer

Correct Answer: Angle of attack

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What is a common design for ion thrusters?

Answer

Correct Answer: Gridded ion thruster

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What are the electrodes used to accelerate ions in an electrostatic ion thruster?

Answer

Correct Answer: High-voltage grid electrodes

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What does the eigenvector slew method calculate?

Answer

Correct Answer: A steering correction

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What is the field of study that is related to spacecraft?

Answer

Correct Answer: Aerospace engineering

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What does eigenvector slew mean?

Answer

Correct Answer: To calculate a steering correction

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What does the eigenvector slew do in aerospace engineering?

Answer

Correct Answer: Calculate a steering correction

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What is the name of the method to calculate a steering correction?

Answer

Correct Answer: Eigenvector slew

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What is a constant of motion?

Answer

Correct Answer: Eccentricity vector

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What is the magnitude of the eccentricity vector?

Answer

Correct Answer: The orbit's scalar eccentricity

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Along what kind of orbit is the eccentric anomaly a part?

Answer

Correct Answer: Elliptic Kepler orbit

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Along with the true anomaly and the mean anomaly, what is a third parameter that defines a position along an orbit?

Answer

Correct Answer: Eccentric anomaly

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What are the other two parameters that define a position along an orbit?

Answer

Correct Answer: The true anomaly and the mean anomaly

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What protects life on Earth?

Answer

Correct Answer: The atmosphere

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What does the atmosphere of Earth do to protect life on Earth?

Answer

Correct Answer: Creating pressure allowing for liquid water to exist

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What does the atmosphere of Earth protect?

Answer

Correct Answer: Meteors

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In terms of percent elongation, what does Ductility measurement express as?

Answer

Correct Answer: Percent area reduction

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What is a measure of a material's ability to undergo significant plastic deformation before rupture?

Answer

Correct Answer: Ductility

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Hydrazine/nitrogen tetroxide systems are much more common than what?

Answer

Correct Answer: Monomethylhydrazine/hydrogen peroxide

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What is the most common component of dual mode propulsion systems?

Answer

Correct Answer: Hydrazine

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What type of aircraft might be used for a drop test?

Answer

Correct Answer: Powered

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What are missile-powered aircraft known as after being released from their carrier aircraft?

Answer

Correct Answer: Drop launches

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The drag equation is used to calculate what?

Answer

Correct Answer: The force of drag experienced by an object

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What is the name of the formula used to calculate the force of drag experienced by an object?

Answer

Correct Answer: Drag equation

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What is the general term for drag?

Answer

Correct Answer: Air resistance

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In what area is drag called air resistance?

Answer

Correct Answer: Fluid dynamics

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What is the name of the document providing guidance for the development of airborne electronic hardware?

Answer

Correct Answer: RTCA/DO-254

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What is RTCA/DO-254?

Answer

Correct Answer: Design Assurance Guidance for Airborne Electronic Hardware

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What is the name of the guideline that deals with the safety of safety-critical software used in certain airborne systems?

Answer

Correct Answer: DO-178B

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In 2012, what replaced DO-178B?

Answer

Correct Answer: DO-178C

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What does a displacement quantify?

Answer

Correct Answer: Both the distance and direction of an imaginary motion along a straight line

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What quantifies both the distance and direction of an imaginary motion along a straight line from the initial position to the final position of the point?

Answer

Correct Answer: A displacement

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A displacement quantifies both the distance and direction of what?

Answer

Correct Answer: Imaginary motion

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What is the term used for the average pressure change across an airscrew?

Answer

Correct Answer: Disk loading

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What do helicopter main rotors and tail rotors have in common?

Answer

Correct Answer: Airscrews with a relatively low disk loading

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What is an example of an airscrew that has a relatively low disk loading?

Answer

Correct Answer: Rotors

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What is the name of a negative dihedral angle?

Answer

Correct Answer: Anhedral angle

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What is the upward angle from horizontal of the wings or tailplane of a fixed-wing aircraft?

Answer

Correct Answer: Dihedral angle

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What is required for using the Digital DATCOM program?

Answer

Correct Answer: An input file containing a geometric description of an aircraft

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What does the USAF Stability and Control DATCOM do?

Answer

Correct Answer: Calculate the static stability, control and dynamic derivative characteristics of fixed-wing aircraft

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What program does the USAF Stability and Control DATCOM work with?

Answer

Correct Answer: Digital DATCOM

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What does the derivative of a function of a real variable measure?

Answer

Correct Answer: The sensitivity to change

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What is another name for density?

Answer

Correct Answer: Volumetric mass density

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What is the lower case Greek letter rho called?

Answer

Correct Answer: Ρ

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What shape is similar to the delta letter?

Answer

Correct Answer: Triangle

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What is delta wing named for its similarity in shape to?

Answer

Correct Answer: Uppercase letter delta

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What is the name of a type of wing?

Answer

Correct Answer: Delta wing

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What does the Tsiolkovsky rocket equation determine?

Answer

Correct Answer: How much propellant is required

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What is an estimate of the total delta-v required for a space mission?

Answer

Correct Answer: Delta-v budget

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What is the delta-v budget?

Answer

Correct Answer: In astrodynamics and aerospace

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In what units is delta-v measured?

Answer

Correct Answer: Speed

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In space, what is the impulse that needs to be given in order to perform an orbital maneuver?

Answer

Correct Answer: Delta-v

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A configuration is a set containing which of the following?

Answer

Correct Answer: The positions of all particles of the body

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What is a configuration?

Answer

Correct Answer: A set containing the positions of all particles of the body

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In what field is the transformation of a body from a reference configuration to a current configuration called deformation?

Answer

Correct Answer: Continuum mechanics

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Deformation refers to any changes in what?

Answer

Correct Answer: The shape or size of an object

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In what area of science would you find the word "deformation"?

Answer

Correct Answer: Materials science

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What is a type of change in shape that materials science recognizes?

Answer

Correct Answer: Deformation

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What calculation is done on beam elements?

Answer

Correct Answer: Euler–Bernoulli beam equation

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What is deflection usually measured as?

Answer

Correct Answer: An angle or a distance

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What may refer to an angle or a distance?

Answer

Correct Answer: Deflection

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What is the deflection distance of a member under a load related to?

Answer

Correct Answer: The slope of the deflected shape of the member under that load

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What is the process of calculating one's current position by using a previously determined position?

Answer

Correct Answer: Dead reckoning

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What is the biological term for calculating position by dead reckoning?

Answer

Correct Answer: Path integration

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How is a de Laval nozzle shaped?

Answer

Correct Answer: Asymmetric hourglass shape

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In the middle of a de Laval nozzle, what shape does it take?

Answer

Correct Answer: Hourglass

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What is the name of the stress in mechanics that remains unchanged if rotated?

Answer

Correct Answer: Cylinder stress

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What does the term "cylinder stress" refer to in the field of mechanics?

Answer

Correct Answer: Stress distribution with rotational symmetry

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In what area of study is a cylinder stress a type of stress?

Answer

Correct Answer: Mechanics

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What is the corrected speed at sea level?

Answer

Correct Answer: Speed a component would rotate

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What is the term for the speed a component would rotate at if the inlet temperature corresponded to ambient conditions at sea level?

Answer

Correct Answer: Corrected speed

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What is the characteristic feature of a centrifugal compressor?

Answer

Correct Answer: Pressure rise

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What sub-class are centrifugal compressors?

Answer

Correct Answer: Dynamic axisymmetric work-absorbing turbomachinery

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How does the critical Mach number differ from the critical Mach number of aircraft?

Answer

Correct Answer: At the lower critical Mach number, airflow around the entire aircraft is subsonic

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What is the critical Mach number of an aircraft?

Answer

Correct Answer: Mcr or M*

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When was the Crew Exploration Vehicle initially proposed?

Answer

Correct Answer: U.S. NASA Vision for Space Exploration

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The Orion CEV was part of what program?

Answer

Correct Answer: Constellation Program

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What is another name for control engineering?

Answer

Correct Answer: Control systems engineering

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What are CSDs used to drive?

Answer

Correct Answer: Mechanisms

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What is another name for CSD?

Answer

Correct Answer: Constant speed drive

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What are boundaries used to define?

Answer

Correct Answer: Surfaces

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What type of problem does computational fluid dynamics help solve?

Answer

Correct Answer: Fluid flows

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What are the fluids studied by computational fluid dynamics?

Answer

Correct Answer: Liquids and gases

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What is a measure of the relative volume change of a fluid or solid as a response to a pressure change?

Answer

Correct Answer: Compressibility

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In what sciences is compressibility measured?

Answer

Correct Answer: Thermodynamics and fluid mechanics

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What is the application of balanced outward forces called?

Answer

Correct Answer: Tension

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What is compression compared to?

Answer

Correct Answer: Tension or traction

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What does outgassing produce?

Answer

Correct Answer: A visible atmosphere or coma

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What is the process that a comet goes through when passing close to the sun?

Answer

Correct Answer: Outgassing

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A perfectly collimated beam of light would not what?

Answer

Correct Answer: Disperse with distance

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A perfectly collimated light beam would not what with distance?

Answer

Correct Answer: Disperse

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Where is the cockpit usually located on a spacecraft?

Answer

Correct Answer: Near the front

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What is the area usually near the front of an aircraft or spacecraft?

Answer

Correct Answer: Cockpit

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What is the purpose of clean configuration?

Answer

Correct Answer: Maximize airspeed for a given power setting

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Clean configuration is the flight configuration of an aircraft when its external equipment is retracted to what for a given power setting?

Answer

Correct Answer: Minimize drag

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Clean configuration is how an aircraft flies when its external equipment is retracted to minimize what?

Answer

Correct Answer: Drag

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What is an example of a straight line that is not a chord?

Answer

Correct Answer: Aerofoil

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The leading and trailing edges of an aerofoil are what is referred to as what?

Answer

Correct Answer: Chord

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What is the point where the distributed mass sums to zero?

Answer

Correct Answer: Center of mass

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What is the Center of Mass of a distribution of mass in space?

Answer

Correct Answer: The unique point where the weighted relative position of the distributed mass sums to zero

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What point is the body's center of gravity the same for?

Answer

Correct Answer: Mass-center

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What is the point around which the torque due to gravity vanishes?

Answer

Correct Answer: Center of gravity

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The center-of-gravity and the mass-center are two different things when a satellite is in which orbit?

Answer

Correct Answer: Orbit around a planet

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What is a body's center of gravity?

Answer

Correct Answer: The point around which the resultant torque due to gravity forces vanishes

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In the Centennial Challenges, what kind of prizes are offered?

Answer

Correct Answer: Non-government-funded technological achievements

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What are the competitions called?

Answer

Correct Answer: Centennial Challenges

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The canard is sometimes described as a small fore plane or a small wing that is placed where?

Answer

Correct Answer: Forward of the main wing

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What is it called when a small forewing is placed forward of a fixed-wing aircraft?

Answer

Correct Answer: Canard

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What does Cable Lacing prevent from happening along the length of the cable?

Answer

Correct Answer: Handling problems

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With which type of engines are the air bled from the cabin when flying at altitude?

Answer

Correct Answer: Gas turbine engines

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What is the process of pressurizing an aircraft's cabin?

Answer

Correct Answer: Cabin pressurization

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What is used to carry the cabin pressurization in spacecraft?

Answer

Correct Answer: Cryogenic tanks

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What is the term for upward force in a fluid?

Answer

Correct Answer: Buoyancy

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What is a synonym for buoyancy?

Answer

Correct Answer: Upthrust

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What is the air layer near the ground affected by diurnal heat, moisture or momentum transfer to or from?

Answer

Correct Answer: Atmospheric boundary layer

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Along with heat and moisture, what other type of transfer takes place in an atmospheric boundary layer?

Answer

Correct Answer: Momentum

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What type of heat or moisture transfer does the boundary layer of air near the ground experience?

Answer

Correct Answer: Diurnal

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What does a booster rocket add to a space vehicle's payload?

Answer

Correct Answer: Takeoff thrust

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Where does bleed air come from?

Answer

Correct Answer: The compressor stage of those engines

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What is the primary function of bleed air?

Answer

Correct Answer: Compressed air

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What is the name of the air produced by gas turbine engines that is taken from the compressor stage?

Answer

Correct Answer: Bleed air

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What is a general class of launch vehicle based on?

Answer

Correct Answer: The premise that it is cheaper to operate large rockets of simple design

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Based on the premise that it is cheaper to operate, what do people refer to as a big dumb booster?

Answer

Correct Answer: Large rockets

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What is another name for the big dumb booster?

Answer

Correct Answer: BDB

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The bi-elliptic transfer requires what amount of delta-v?

Answer

Correct Answer: Less

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The bi-elliptic transfer consists of two half-what?

Answer

Correct Answer: Elliptic orbits

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What does Bernoulli's principle say happens when you increase the speed of a fluid?

Answer

Correct Answer: A decrease in pressure

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In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in what?

Answer

Correct Answer: Pressure

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What does bearing mean in navigation?

Answer

Correct Answer: Horizontal angle between the direction of an object and another object

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What is the horizontal angle between the objects?

Answer

Correct Answer: Bearing

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What is another name for beam-powered propulsion?

Answer

Correct Answer: Directed energy propulsion

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When was Ballute invented?

Answer

Correct Answer: 1958

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What is a balloon not?

Answer

Correct Answer: An airship

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What is a powered aerostat?

Answer

Correct Answer: Airship

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What is an example of an axial stress?

Answer

Correct Answer: A normal stress parallel to the axis of cylindrical symmetry

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What does the normal stress parallel to the axis of cylindrical symmetry represent?

Answer

Correct Answer: Axial stress

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An avionics system is used to perform what function?

Answer

Correct Answer: Individual functions

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What are the electronic systems used on aircraft, artificial satellites, and spacecraft?

Answer

Correct Answer: Avionics

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What feature allows a radio direction finder to show the relative bearing to a radio station?

Answer

Correct Answer: Automatic direction finder

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What type of equipment has an automatic direction finder?

Answer

Correct Answer: Marine or aircraft radio-navigation instrument

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What does the ADF do that a normal radio can't?

Answer

Correct Answer: Displays the relative bearing from the ship or aircraft to a suitable radio station

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What is the ADF called that displays the relative bearing from ship or aircraft?

Answer

Correct Answer: Automatic direction finder

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What is a common use of attitude control?

Answer

Correct Answer: Controlling the orientation of an object with respect to an inertial frame of reference

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What is the process of controlling the orientation of an object with respect to an inertial frame of reference?

Answer

Correct Answer: Attitude control

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What is the other type of atmospheric entry?

Answer

Correct Answer: Controlled entry

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What is the movement of an object from outer space into the gases of an atmosphere of a planet?

Answer

Correct Answer: Atmospheric entry

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What is the field of study that applies astrodynamics to spacecraft?

Answer

Correct Answer: Orbital mechanics or astrodynamics

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What are other names for asteroid?

Answer

Correct Answer: Planetoids

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What kind of Solar System objects were called asteroids?

Answer

Correct Answer: Minor planets

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A high aspect ratio is associated with what type of wing?

Answer

Correct Answer: Long, narrow

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A long, narrow wing has what property called?

Answer

Correct Answer: High aspect ratio

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What is another name for the argument of periapsis?

Answer

Correct Answer: Argument of perifocus or argument of pericenter

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What is areal velocity also called?

Answer

Correct Answer: Sector velocity or sectorial velocity

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In classical mechanics, what is?

Answer

Correct Answer: Areal velocity

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What is the most common propellant used in arcjet engines?

Answer

Correct Answer: Hydrazine or ammonia

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In addition to hydrazine, what type of propellant can be used in an arcjet rocket?

Answer

Correct Answer: Ammonia

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What is the word apsis derived from?

Answer

Correct Answer: Latin

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Apsis is an extreme in the orbit of what?

Answer

Correct Answer: An object

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What is the term used to refer to an extreme point in the orbit of an object?

Answer

Correct Answer: Apsis

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What may be converted to energy?

Answer

Correct Answer: Rest mass of a matter/antimatter mixture

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What type of rocket uses antimatter as fuel?

Answer

Correct Answer: Antimatter rocket

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What is a large-scale circulation of winds around a central region of high atmospheric pressure called?

Answer

Correct Answer: An anticyclone

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What does an anticyclone have around a central region of high pressure?

Answer

Correct Answer: Winds

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In science, what rate of rotation is the angular velocity of a particle?

Answer

Correct Answer: Around a chosen center point

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What is one example of an angular property that a particle has?

Answer

Correct Answer: Angular velocity

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What is angular momentum in physics?

Answer

Correct Answer: Rotational equivalent of linear momentum

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What is the rotational equivalent of linear momentum?

Answer

Correct Answer: Angular momentum

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What is the term for the angle between a line on a wing and the flow of air?

Answer

Correct Answer: Angle of attack

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What is the most common line used to represent air flow?

Answer

Correct Answer: Chord line

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What is the other name for angle of attack?

Answer

Correct Answer: Α

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What is used for measuring wind speed?

Answer

Correct Answer: Anemometer

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What is an anemometer used for measuring?

Answer

Correct Answer: Wind speed

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Albedo is a measure of what?

Answer

Correct Answer: The diffuse reflection of solar radiation

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What is the dimensionless measure of a planet or other astronomical body?

Answer

Correct Answer: Albedo

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What do airships gain their lift from?

Answer

Correct Answer: Large gas bags

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An airship or dirigible balloon is a type of what?

Answer

Correct Answer: Aerostat

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What is the lifting gas in airships less dense than?

Answer

Correct Answer: The surrounding air

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What is the function of an airlock?

Answer

Correct Answer: Permits the passage of people and objects between a pressure vessel and its surroundings

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How many airtight doors are in a lock?

Answer

Correct Answer: Two

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What is another term for airfoil?

Answer

Correct Answer: Aerofoil

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A conventional fixed-wing aircraft flight control system consists of flight control surfaces, the respective cockpit controls, connecting linkages, and the necessary operating mechanisms to control an aircraft's direction in flight, along with what?

Answer

Correct Answer: Engine controls

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Conventional fixed wing aircraft have what as their flight control system?

Answer

Correct Answer: Flight control surfaces

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What does an aircraft use to counter the force of gravity?

Answer

Correct Answer: Static lift or by using the dynamic lift of an airfoil

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What is the movement around the axis of an aircraft that is changing its flight path?

Answer

Correct Answer: Rolling

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What are ailerons used for?

Answer

Correct Answer: Control the aircraft in roll

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What is a aft-crossing trajectory?

Answer

Correct Answer: An alternate flight path for a rocket

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What does the rocket's rotation get slowed by?

Answer

Correct Answer: A small parachuteattached to its tail

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What is the alternate flight path for a rocket called?

Answer

Correct Answer: Aft-crossing trajectory

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What is an example of an aerostructure?

Answer

Correct Answer: Fuselage

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What is the term for the components of an aircraft's airframe?

Answer

Correct Answer: Aerostructure

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What do aerostats include?

Answer

Correct Answer: Unpowered balloons and powered airships

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Low altitudes where most missions have the greatest need for thrust are where the engine uses most of the fuel, which type of vehicle uses this type of engine?

Answer

Correct Answer: Aerospike

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What percentage of the fuel used by a vehicle with an aerospike engine is used at low altitudes?

Answer

Correct Answer: 25–30%

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A vehicle with an aerospike engine uses 25-30% less fuel at what location?

Answer

Correct Answer: Low altitudes

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What is an example of an Aerospace material?

Answer

Correct Answer: Metal alloys

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What is the primary field of engineering concerned with?

Answer

Correct Answer: Aircraft and spacecraft

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What two major branches does Aerospace engineering have?

Answer

Correct Answer: Aeronautical engineering and Astronautical Engineering

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What is the primary field of engineering concerned with the development of aircraft and spacecraft?

Answer

Correct Answer: Aerospace engineering

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In which fields do aerospace bearings exist?

Answer

Correct Answer: Commercial, private, military, or space applications

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What kind of structures are included under Aerospace architecture?

Answer

Correct Answer: Non-habitable and habitable

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What field is studied by aeroelasticity?

Answer

Correct Answer: Static aeroelasticity

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In what field does recent research show applications of Aeroelasticity?

Answer

Correct Answer: Snoring

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What are some of the fields of study that aeroelasticity incorporates?

Answer

Correct Answer: Fluid mechanics, solid mechanics, structural dynamics and dynamical systems

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What type of physics studies the interactions between the inertial, elastic, and aerodynamic forces that occur when an elastic body is exposed to a fluid flow?

Answer

Correct Answer: Aeroelasticity

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What type of object is used in aerodynamics?

Answer

Correct Answer: Solid

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What is the study of the motion of air?

Answer

Correct Answer: Aerodynamics

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The maneuver reduces the speed of a spacecraft from what type of trajectory?

Answer

Correct Answer: Hyperbolic

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In what type of orbit would a spacecraft be transferred using Aerocapture?

Answer

Correct Answer: Elliptical

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What is the general name given to orbital transfer maneuvers?

Answer

Correct Answer: Aerocapture

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When do spacecraft utilize the technique of aerobraking?

Answer

Correct Answer: After arriving at a body with an atmosphere

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What does Aeolian mean?

Answer

Correct Answer: Wind blowing over fixed objects

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What does aeroacoustics study?

Answer

Correct Answer: Noise generation

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What is a field of acoustics that studies noise generation via turbulent fluid motion or aerodynamic forces interacting with surfaces?

Answer

Correct Answer: Aeroacoustics

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What is the acronym of SVS?

Answer

Correct Answer: Advanced Space Vision System

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What is the acronym for the Advanced Space Vision System?

Answer

Correct Answer: SVS

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What is generally the argument of the action?

Answer

Correct Answer: The trajectory

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What is the most common unit of action?

Answer

Correct Answer: Joule-second

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What is the rate of change of velocity of an object with respect to time?

Answer

Correct Answer: Acceleration

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What is the unit of acceleration?

Answer

Correct Answer: Metre per second squared

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What is the mathematical term for the absolute value of a number?

Answer

Correct Answer: Modulus

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What is the name of the non-negative value of x without regard to its sign?

Answer

Correct Answer: Absolute value

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What does the term absolute humidity describe?

Answer

Correct Answer: Water content of air

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What is the water content of air described as being?

Answer

Correct Answer: Absolute humidity

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What is the expression used in broadcasting?

Answer

Correct Answer: Height above average terrain

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What is the technical term for height above average terrain?

Answer

Correct Answer: HAAT

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Theory of Vibrations
Thermodynamics
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