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Wind Tunnels and other cool facts about airplanes

Wind Tunnels and other cool facts about airplanes. Chelsea He Matt Vernacchia April 23, 2012. Brief history of flight. 1903. 1927. 2012. Spirit of St. Louis Charles Lindberg May 20-21, 1927. Airbus 380. Wright Flyer I Orville & Wilbur Wright December 17, 1903. F/A 18 Hornet.

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Wind Tunnels and other cool facts about airplanes

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  1. Wind Tunnelsand other cool facts about airplanes • Chelsea He • Matt Vernacchia • April 23, 2012

  2. Brief history of flight 1903 1927 2012 Spirit of St. Louis Charles Lindberg May 20-21, 1927 Airbus 380 Wright Flyer I Orville & Wilbur Wright December 17, 1903 F/A 18 Hornet

  3. Which shape makes the best wing? B) A) D) C)

  4. Forces on an airplane Lift Thrust Drag Weight Image Credit: Prof. David Darmofal

  5. How do airplanes fly? • Airfoil shape & orientation force air to flow faster over top side of the wing than over the bottom side of the wing • By Bernoulli's Principle, the faster flowing airstream exerts less pressure on the wing • There is an upward force on the wing • Stall: when the angle of attack is too large and unstable flow ensues

  6. Wind tunnel testing Image Credit: NASA (top left, top right) Bill Litant (bottom left)

  7. Wind tunnel simulation and demonstration Things to look for: Splitting airstreams Downward redirection of air stream Stall vortices

  8. So, which wing shape is the best? B) A) D) C)

  9. Questions?

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