Flight and Space.

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Across
  1. 2. the width of the airfoil or wing
  2. 4. a chemical mixture that is burned to produce thrust.
  3. 5. a controlling surface on an aircraft's tail that regulates yaw.
  4. 8. the controlling surface that regulates an aircraft's roll.
  5. 9. a rotary engine that extracts energy from fluid turning blades.
  6. 10. Relates to speed five or more times that of sound in air.
  7. 13. The force that attracts a body toward the center of the earth or toward any other physical body having mass.
Down
  1. 1. the rate of change of velocity with respect to time.
  2. 3. the clockwise or counterclockwise rotation of an aircraft.
  3. 6. the rear edge of a wing.
  4. 7. the up or down movement of an aircraft.
  5. 11. the quantity of matter, which a material contains.
  6. 12. The force that directly opposes the weight of an airplane and holds the airplane in the air.