Across
- 4. A gas or liquid that tends to take the shape of its container.
- 5. 760 MPH. When a plane travels faster than this speed, it is breaking the sound barrier.
- 7. The rear edge of a wing.
- 9. A measure of the curvature of the airfoil.
- 14. As the speed of a fluid increases, its pressure decreases.
- 16. The acute angle between the direction of the relative wind and the chord of an airfoil.
- 17. Transferring of energy to an object, typically by pushing or pulling on that object.
- 20. For every action there is an equal and opposition reaction.
- 24. The quantity of matter, which a material contains.
- 25. An airplane with no attached source of thrust.
- 26. Device used to destroy lift. Found on top of the wing and in varying sizes.
- 27. The up or down movement of an aircraft.
- 28. The relationship among an object’s mass (m), acceleration (a), and an applied force (F), is Force equals mass times acceleration (F= ma).
- 31. Relates to speed five or more times that of sound in air.
Down
- 1. The rate of change of velocity with respect to time.
- 2. A controlling surface on an aircraft’s tail that regulates yaw.
- 3. An airfoil mounted on a revolving shaft. It creates low pressure in front of it, thereby moving an aircraft forward because of the high pressure area behind the propeller.
- 6. A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.
- 8. The front, usually rounded, edge of an airplane wing or airfoil.
- 10. The clockwise or counterclockwise rotating motion of an aircraft.
- 11. Objects at rest stay at rest and objects in motion stay in motion unless an external force is applied. It is known as the law of inertia.
- 12. Resistance of the air (technically a fluid) against the forward movement of an airplane.
- 13. A vector quantity that includes the speed and direction of an object.
- 15. The tail assembly of an aircraft, including the horizontal and vertical stabilizers, elevators, and rudder.
- 18. A side-to-side motion of the nose of the aircraft.
- 19. The central body of an aircraft where wings and stabilizers are attached.
- 21. A force applied to a body to propel it in a desired direction. The force which moves an aircraft through the air.
- 22. The major horizontal surface on an airplane that provides lift.
- 23. The force that attracts a body toward the center of the earth or toward any other physical body having mass.
- 29. The force generated by the gravitational attraction of the earth on the airplane. Lift must be equal to weight in order to sustain flight.
- 30. The force that directly opposes the weight of an airplane and holds the airplane in the air.
- 32. The controlling surface that regulates an aircraft’s pitch.
- 33. The width of an airfoil or wing.