The wright approach and wind tunnel

1. is when the critical angle of attack is reached and caused the boundary layer of air to separate from the airfoil and creates drag
3. the edge of an airfoil that air makes the first contact
5. the edge of an airfoil that air makes the last contact
6. the length between the ends of the wingtips
8. the length from the trailing edge to the leading edge
10. controls the roll of an airplane
12. the type of mechanics the brothers were.
14. a type of tunnel used to test, analyze, and improve airfoil designs
16. the type of airfoil where the upper and lower surfaces are identical
20. brothers who made the world's first powered controlled flight.
22. wing __________ was done by the brothers for the first time to control the roll of a flying machine
23. the type of airfoil where the upper surface is more curved.
25. a wing shape that when moved through a fluid produces an aerodynamic force.

2. maximum distance between the upper and lower wing surfaces.
4. the curve of the wing
7. the angle of _____ is the angle between the chord line and the relative wind flow.
9. _____ Lilenthal's aerodynamic data was used by the brothers
11. type of practices the brothers used for the first time in aircraft development and are still used today
13. controls the pitch of an airplane
15. is directly affected by the angle of attack
17. controls the yaw of an airplane
18. a straight line that connects the leading edge to the trailing edge
19. the shape of the airfoil when viewing from above
21. a type of material the majority of today's aircraft are built with
24. is regarded as one of the first true pioneers of aeronautical science, establishing the ideas of the forces of flight, the effectiveness of a cambered wing, and separate systems for propulsion, lift, and control.