Across
- 3. this type of drag is caused by the parts of an airplane that do NOT produce lift, and increases with speed
- 7. according to the lift formula, tripling the velocity will increase the resulting lift by this much
- 10. small vertical fins on top of the wing to smooth airflow over the wing
- 11. design feature in wings; wing tips are higher than the center of the wing
- 12. the wing span divided by wing chord
- 13. if lift is greater than weight, the airplane will do this
- 15. small vertical tabs on the upper surface of a wing, it delays boundary layer separation
- 18. the wing is twisted, improving stall characteristics
- 21. on the upper surface of a wing; they disrupt lift
- 23. this type of propeller can be changed by the pilot, changing from a coarse pitch to a fine pitch
- 25. this type of wing tapers back towards the tail
Down
- 1. the type of flow that has improved boundary layer characteristics; the separation point of the boundary layer is further aft on the wing
- 2. relative curvature of a wing
- 4. this type of drag is caused by air clinging to the surface
- 5. the distance from the leading edge to the trailing edge
- 6. these are openings in the leading edge of wings, they allow air to pass through
- 8. this type of drag is caused by the parts of an airplane that produce lift, and increases when the angle of attack increases
- 9. mounted on the leading edge of a wing, they provide the same effect as washout
- 14. a fixed angle at which the wing is mounted to the aircraft
- 16. this type of pitch on a propeller is the theoretical distance a propeller should move forward in one rotation
- 17. these parts open forward of the main wing, to smooth out the airflow over the wing
- 19. if thrust is greater than drag, the airplane will do this
- 20. the shape of a wing when viewed from above
- 22. distance from wingtip to wingtip
- 24. is the difference between how far a propeller should advance in one rotation, and how far it actually advances