Across
- 3. ____ precession Applied forces manifest 90° after input.
- 6. torque Equivalent of rudder pedals.
- 9. rule gives a gradual change in cross sectional area.
- 11. tuck Caused by the rearward movement of the centre of pressure.
- 12. speeds greater than sound.
- 14. Between subsonic and supersonic.
- 15. freewheeling the main rotor.
- 17. The helicopter control which tilts the main rotor disc.
- 18. rotor The wing for a helicopter.
- 19. a control designed to increase blade pitch equally.
- 21. Speeds below the speed of sound
- 23. drag Shock induced drag.
Down
- 1. Mach number The speed of an aircraft where supersonic flow is first encountered
- 2. of lift Why we allow rotor blades to flap.
- 4. rigid Where the main rotor is free to tilt.
- 5. resonance Lateral oscillation that may be induced when on the ground.
- 6. Hinged attachment of rotor blades.
- 7. lift Additional lift created when entering horizontal flight.
- 8. Changes the speed of sound.
- 10. Speeds above Mach five.
- 13. effect the side effect of flapping rotor blades
- 16. rotor counters main rotor torque.
- 20. shock occurs at Mach crit
- 21. plate Translates pilots inputs to the main rotor.
- 22. occurs in the transonic range