Anderson, John D., Jr. National Air and Space Museum, Smithsonian Institution, Washington, DC; Department of Aerospace Engineering, University of Maryland, College Park, Maryland.
Last reviewed:February 2021
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- Aerodynamic forces
- Airplane flight
- Dimensionless coefficients
- Compressibility effects
- Transonic flow
- Supersonic flow
- Related Primary Literature
- Additional Reading
The cross section of a body that is placed in an airstream to produce a useful aerodynamic force in the most efficient manner possible. The cross sections of wings, helicopter rotor blades (Fig. 1), propeller blades, windmill blades, compressor and turbine blades in a jet engine, hydrofoils on a high-speed ship, bird wings, and fish and whale fins are examples of airfoils. See also: Compressor; Helicopter; Propeller (aircraft); Turbine propulsion; Wind power; Wing
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