Downwash
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In aeronautics, downwash is the change in direction of air deflected by the aerodynamic action of an airfoil, wing, or helicopter rotor blade in motion, as part of the process of producing lift.[1] In helicopter aerodynamics discussions, it may be referred to as induced flow.[2]
Lift on an airfoil is an example of the application of Newton's third law of motion – the force required to deflect the air in the downwards direction is equal in magnitude and opposite in direction to the lift force on the airfoil. Lift on an airfoil is also an example of the Kutta-Joukowski theorem. The Kutta condition explains the existence of downwash at the trailing edge of the wing.[1][3][4][5]
See also
References
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- ↑ 1.0 1.1 Crane, Dale: Dictionary of Aeronautical Terms, third edition, page 172. Aviation Supplies & Academics, 1997. <templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>ISBN 1-56027-287-2
- ↑ ALC-104: Helicopter - General and Flight Aerodynamics. Federal Aviation Authority. Retrieved 18 January 2022 from www.faasafety.gov
- ↑ Lua error: bad argument #1 to "get" (not a valid title).
- ↑ "The main fact of all heavier-than-air flight is this: the wing keeps the airplane up by pushing the air down." In: Lua error: bad argument #1 to "get" (not a valid title).
- ↑ Downwash Effects on Lift. Retrieved from link
