🛫Flight unit🛫

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Across
  1. 1. an empty space inside something
  2. 3. makes friction and slows down the airplane
  3. 5. aircraft with overhead rotors and moves any direction
  4. 7. pushes the plane forward
  5. 10. a curved surface that makes a ratio of lift to drag
  6. 12. flight control surfaces that control the aircraft’s pitch.
  7. 15. used to turn in different directions
  8. 16. a force against or on something
Down
  1. 2. is the gravity and directs the plane downward
  2. 4. aircraft that flys for a long time without using any engine
  3. 6. a small device that spins usually used for lift on a helicopter
  4. 8. energy that is a push or pull
  5. 9. has no thurst and wings create drag, has to make thurst in another way
  6. 11. the study of air moving around solid things
  7. 13. holds the airplane in the air
  8. 14. Is a powered flying vehicle with wings