Wake Vortex Attenuation Flight Tests: A Status Report. Conference Paper, NASA Conference Publication 2170, Research Engineering, NASA Dryden Flight Research Center

Barber, Marvin R. and Tymczyszyn, Joseph J. (1981) Wake Vortex Attenuation Flight Tests: A Status Report. Conference Paper, NASA Conference Publication 2170, Research Engineering, NASA Dryden Flight Research Center.

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Abstract

Flight tests have been conducted to evaluate the magnitude of aerodynamic attenuation of the wake vortices of large transport aircraft that can be achieved through the use of static spoiler deflection and lateral control oscillation. These methods of attenuation were tested on Boeing B-747 and Lockheed L-1011 commercial transport aircraft. Evaluations were made using probe aircraft, photographic and visual observations, and ground-based measurements of the vortex velocity profiles. The magnitude of attenuation resulting from static spoiler deflection was evaluated both in and out of ground effect. A remotely piloted QF-86 drone aircraft was used to probe the attenuated vortices in flight in and out of ground effect, and to make landings behind an attenuated B-747 airplane at reduced separation distances.

EPrint Type:	Other
Keywords:	Airplanes, B-747 aircraft, Crashworthiness, Environment, Flight operations, L-1011 aircraft, QF-86 drone aircraft, Safety, Terminal area
Subjects:	Aircraft/Project: Boeing 747 Aircraft/Project: L-1011 (01 - 09) Aeronautics: (03) Air Transportation And Safety
ID Code:	1916
Deposited On:	08 December 2008
Additional Information:	22 pages. In NASA Conference Publication 2170 Part 2, 1980 Aircraft Safety and Operating Problems, Paper 22, pp. 387-408. Presented at the 1980 Aircraft Safety and Operating Problems Conference, NASA Langley Research Center, Hampton, Virginia, November 5-7, 1980. Barber, NASA Dryden Flight Research Center.