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NASA aircraft trailing vortex researchA brief description is given of NASA's comprehensive program to study the aircraft trailing vortex problem. Wind tunnel experiments are used to develop the detailed processes of wing tip vortex formation and explore different means to either prevent trailing vortices from forming or induce early break-up. Flight tests provide information on trailing vortex system behavior behind large transport aircraft, both near the ground, as in the vicinity of the airport, and at cruise/holding pattern altitudes. Results from some flight tests are used to show how pilots might avoid the dangerous areas when flying in the vicinity of large transport aircraft. Other flight tests will be made to verify and evaluate trailing vortex elimination schemes developed in the model tests. Laser Doppler velocimeters being developed for use in the research program and to locate and measure vortex winds in the airport area are discussed. Field tests have shown that the laser Doppler velocimeter measurements compare well with those from cup anemometers.
Document ID
19720021578
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcgowan, W. A. (NASA Headquarters Washington, DC United States)
Date Acquired
September 2, 2013
Publication Date
January 1, 1971
Subject Category
Fluid Mechanics
Report/Patent Number
NASA-TM-X-68566
Meeting Information
Meeting: FAA Symp. on Turbulence
Location: Washington, DC
Country: United States
Start Date: March 22, 1971
End Date: March 24, 1971
Accession Number
72N29228
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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