Recent Wake Turbulence Flight Test Programs. Conference Paper SETP Paper No. 1466, Research Engineering, NASA Dryden Flight Research Center

Tymczyszyn, Joseph J. and Barber, Marvin R. (1974) Recent Wake Turbulence Flight Test Programs. Conference Paper SETP Paper No. 1466, Research Engineering, NASA Dryden Flight Research Center.

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Abstract

In early flight tests the size and intensity of the wake vortexes generated by aircraft ranging in size from the Learjet to the C-5A and the B-747 were studied to determine the effects of aircraft configuration, weight, and speed. Early problems were related to vortex marking, the measurement of separation distance, and test techniques. Recent tests conducted with B-747 showed that vortexes were alleviated by reducing the deflection of the outboard flaps. It was found that a more rapid dissipation of the vortex system can be obtained through alterations in the span lift distribution.

EPrint Type:	Other
Keywords:	Aircraft configurations, Flight tests, Transport aircraft, Turbulent wakes, Vortices
Subjects:	Aircraft/Project: Boeing 747 (01 - 09) Aeronautics: (05) Aircraft Design, Testing And Performance Aircraft/Project: Learjet
ID Code:	1177
Deposited On:	13 December 2006
Additional Information:	17 pages. Society of Experimental Test Pilots, Symposium, 18th, Beverly Hills, California, September 25–28, 1974. Society of Experimental Test Pilots, Technical Review, Vol. 12, No. 2, pp. 52–68, 1974.