Unit 1 & 2

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Across
  1. 2. da Vinci's flying machine flapped like a
  2. 3. birds create lift and what by flapping their wings
  3. 9. first person to man a hot air balloon
  4. 10. a wing shape that when moved through a fluid (air) produces an aerodynamic force
  5. 11. this heats the inside of the balloon causing it to rise
  6. 13. hot air balloons rise because warm air becomes _____ dense
  7. 14. wind tunnels are used to test aircraft and
  8. 15. The buoyant force on a submerged object is equal to the _____ of the fluid that is displaced by the object
  9. 16. this and density illustrates the mechanics of a hot air balloon
  10. 21. the wright bros included a rudder on their airplane t0 prevent it from _____ out of control
  11. 22. Airfoil where the upper surface is more curved. The mean camber line is above the chord line
  12. 24. Straight line that connects the leading edge (most forward point) to the trailing edge (most rear point).
  13. 26. The line drawn between the leading and trailing edge so that the distances between the upper
  14. 28. lower ______ on top of the wing creates lift.
  15. 30. when the 4 forces of flight are balanced
  16. 31. The length between the ends of the wingtips
  17. 32. The shape of the airfoil when viewing from above
Down
  1. 1. He described the underlying principles and forces of flight
  2. 3. Maximum distance between the upper and lower wing surfaces
  3. 4. bird part that resembles the propeller
  4. 5. escaped from prison using wings made of feathers and wax
  5. 6. Last edge air makes contact with the airfoil
  6. 7. First edge air makes contact with the airfoil.
  7. 8. aircraft that doesn't depend on an engine
  8. 11. The ability or tendency to float in air, in water, or some other fluid
  9. 12. in Bernoulli's Principle a low pressure is created on ____ of the wing creating lift
  10. 17. lower surfaces are equal
  11. 18. the camber of an airfoil refers to it's
  12. 19. to descend a hot air balloon you allow air to escape through this
  13. 20. The main parts of a hot air balloon are the basket, burner, and ________
  14. 23. type of aircraft that performs best with a symmetrical airfoil
  15. 25. when the air in a balloon is warmed the density of the air _______ causing it to rise
  16. 27. Some people are convinced that this man beat the Wright Brothers to the first
  17. 29. Wright bros and da Vinci based their theories from watching _____ fly