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The Wright Brothers

The Wright Brothers. Master Inventors. What are the four forces of flight?. Weight : Planes are heavy; counteracted by lift Lift: The force that holds the plane up; the wings Drag: The air that pushes against the moving plane; counteracted by thrust

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The Wright Brothers

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  1. The Wright Brothers Master Inventors

  2. What are the four forces of flight? • Weight: Planes are heavy; counteracted by lift • Lift: The force that holds the plane up; the wings • Drag: The air that pushes against the moving plane; counteracted by thrust • Thrust: The force moving the plane forward; the engine and propellers • So why are weight and drag important? • Answer: They cause lift

  3. The Wind Tunnel The Wrights spent four years perfecting their airplane design with the help of a wind tunnel where they were able to see what was happening and make changes. Replica of Wrights’ wind tunnel. The fan produced 25-35 mph winds.

  4. Which way is the air moving?

  5. And now… Wind tunnel faces!

  6. First glider (1900) flown at Kitty Hawk. What state is Kitty Hawk in?

  7. What are the differences?Write them down! First Glider Flyer III

  8. What’s so remarkable? • Part of what made the Wright Brother’s plane so remarkable was the fact that it could be piloted • Interactive • Read pages 40 and 42

  9. We’re done…So what is the test going to be like? • You will have a choice between taking the exam or building a wind tunnel • The wind tunnel has to be better than our class model and needs to come to school Mon, Oct 29 • The wind tunnel and the exam are worth the same number of points • You can do both. If you do both, I will grade your exam and the wind tunnel will be extra credit • Either way, you HAVE to do the study guide. The study guide is its own assignment.

  10. I know you have questions… • What happens if I make the wind tunnel and forget to bring it on Monday? • Answer: Then you’re taking the exam. • Which one is easier? • Answer: That depends entirely on the individual • How many extra credit points will I get if I do both? • Answer: Half of the exam • What materials do I use to make the wind tunnel? • Answer: You can use anything you’d like as long as it is works

  11. Hint #1: If your air vane has too large of holes, it won’t filter the air or make the air flow directional. Air Vane

  12. Hint #2: If your air vane isn’t deep enough, it won’t filter the air or make the air flow directional Depth: How thick it is

  13. What mistakes did we make? The towel was too thick That means the air vane didn’t let enough air into the wind tunnel

  14. What design might be best? Why is this wind tunnel larger at the ends?

  15. What materials can I use?

  16. Wood

  17. Cardboard is probably the most realistic material to use

  18. No gaps between fan and cardboard The straws have small holes to trap the air and they have depth = effective air vane There is a viewing area. We used acrylic (thin plastic at Menards). You could use Saran Wrap

  19. Full straws (not cut)

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