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Base passive porosity for drag reductionA device for controlling drag on a ground vehicle is presented. The device consists of a porous skin mounted on the trailing surface of the ground vehicle. The porous skin may be separated from the vehicle surface by a distance of at least two times the boundary layer formed on the surface. Alternately, the trailing surface of the ground vehicle may be porous. The device minimizes the strength of the separation in the base and wake regions of the ground vehicle, thus reducing drag.
Document ID
19950007769
Acquisition Source
Headquarters
Document Type
Other - Patent Application
Authors
Bauer, Steven X. S. (NASA Langley Research Center Hampton, VA, United States)
Wood, Richard M. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 17, 2013
Publication Date
October 19, 1994
Subject Category
Mechanical Engineering
Report/Patent Number
NAS 1.71:LAR-15246-1
Report Number: NAS 1.71:LAR-15246-1
Patent Number: NASA-CASE-LAR-15246-1
Patent Application Number: US-PATENT-APPL-SN-327061
Accession Number
95N14183
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LAR-15246-1
Patent Application
US-PATENT-APPL-SN-327061

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