THEORY OF FLIGHT

4. The angle which each wing makes with the horizontal
5. Secondary control surface used to reduce the force applied by the pilot on the controls.
7. Stability about the lateral axis
10. Longerons are the primary members of which type fuselage.
11. The main structural members of a wing intended to stiffen a wing to reduce twisting.
14. Secondary effect of yaw caused by the outside wing moving faster through the air creating more lift
15. The point on an airfoil where the boundary layer changes from laminar to turbulent flow
17. The force that causes and aircraft to turn.
19. The term used to describe the curved surface of a wing
21. The force which acts vertically downward through the center of gravity, is called:
22. Reduces the Angle of Incidence near the wingtips and improves stall characteristics.

1. An aircraft in straight and level flight at a constant airspeed is said to be in _______
2. Movement of an airplane about the normal axis
3. Stability due to an aircraft design features
6. Absorb the shock of landing,support the weight of the aircraft and permit's ground movement
7. Stability about the longitudinal axis
8. A force which exerts a strain
9. Secondary control surface that decreases lift and increases drag
12. The tendency of an aircraft to return to its initial situation after being disturbed
13. Kind of drag caused by lift-creating surfaces
16. The imaginary line which connects the leading edge to the trailing edge of a wing
18. The center of __________ is the point on the chord line which corresponds with the resultant of all the forces of lift
20. The angle formed between the Chord and the relative airflow