Test your basic knowledge |

Aerospace Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A straight line parallel to the length of the fuselage but that runs through the aircraft's center of gravity.






2. A power- driven aircraft kept buoyant by a body of gas (usually helium) which is lighter than air.






3. The common reference point for the three axes of the aircraft.






4. A powered - aerial vehicle that does not carry a human operator - uses aerodynamic forces to provide vehicle lift - can fly autonomously or be piloted remotely - can be expendable or recoverable - and can carry a lethal or nonlethal payload.






5. Aircraft stability is the characteristic of an airplane in flight that causes it to return to a condition of equilibrium - or steady flight - after it is disturbed.






6. The capability of an aircraft to respond to your flight inputs - especially with regard to attitude and flight path.






7. A reduction in the chord of a wing as measured from the root to the tip of the wing.






8. Mach. A decimal number representing the true airspeed relationship to the local speed of sound.






9. A force caused by the gravitational attraction of the Earth.






10. Robotic aircraft - used extensively by the military.






11. An aircraft with floats or skis instead of wheels - designed to land on and take off from water.






12. A rocket- launched spacecraft able to land like an unpowered aircraft - used for journeys between earth and craft orbiting the earth.






13. The space in the fuselage of a small airplane containing seats for the pilot - copilot - and sometimes passengers.






14. A large bag filled with hot air or gas to make it rise in the air - with a basket for passengers hanging from it.






15. The rate at which temperature decreases with an increase in altitude.






16. A thin layer of air next to the surface of an airfoil which shows a reduction in speed due to the air's viscosity.






17. Characteristic of the aircraft that permits you to maneuver it easily and allows it to withstand the stress resulting from the maneuver.






18. The ratio of inertial forces to viscous forces.






19. A structure that creates up and down forces at the tail to keep the fuselage aligned in pitch with the relative wind. The structure itself is horizontal while the forces it creates are vertical.






20. Motion around the lateral axis caused by deflection in the elevator controlled by moving the yoke forward and aft.






21. Aircraft speeds between Mach 10 and 25.






22. A built in twist in the wing so that the trailing edge at the wingtip is raised (Wash out) or lowered (Wash in). This significantly affects the slow flight and stall characteristics of the wing.






23. To set or thrust in motion.






24. The last point on an airfoil that interacts with the airflow around the wing.






25. The written text of a play - film - or broadcast.






26. Generates the lifting force that helps the airplane fly when air flows around it.






27. Forces and moments on the body caused by a disturbance tend initially to return the body toward its equilibrium position.






28. A rear horizontal stabilizer that controls up and down or pitching motion of the aircraft nose.






29. The art and science of designing - building - and operating manned or unmanned space objects






30. Design machines that fly.






31. Branch of technology and industry concerned with aviation and space flight.






32. Out of its own accord - an aircraft eventually returns to and remains at its equilibrium position over a period of time.






33. An aircraft that is designed to fly without an engine.






34. The flat surfaces located behind the center of gravity tend to weathervane with the wind.






35. An advertising film which promotes a product in an informative and supposedly objective style.






36. Forward- acting force which opposes drag and propels the aircraft through the air.






37. The study of forces and the resulting motion of objects through the air.






38. Rolling motion about the longitudinal axis caused by ailerons deflecting in opposite directions and controlled by twisting the yoke.






39. A vehicle - missile - or aircraft which obtains thrust by the reaction to the ejection of fast moving exhaust from within a rocket engine.






40. The mounting of wings so that the wingtips and higher than the wingroot.






41. A type of aircraft deriving both lift and propulsion from one or two sets of horizontally revolving rotors.






42. The angle formed by the wing chord line and the relative wind.






43. Aircraft speeds between Mach 1 and 5.






44. Control surfaces attached to the trailing edge of the wing extending outward from the fuselage to the midpoint of each wing. Flaps can increase the lifting efficiency of the wing and decrease stall speed.






45. The study or practice of travel through the air.






46. A glider designed for sustained flight.






47. Acts in the opposite direction of flight - opposes the forward- acting force of thrust - and limits the forward speed of the aircraft.






48. The distance from wing tip to wing tip of a wing planform.






49. Houses the cabin - the cockpit and is a common attachment point for the other major components.






50. Any surface - such as a wing - which provides aerodynamic force when it interacts with a moving stream of air.