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Stall-Departure-Resistance EnhancerStall-departure-resistance enhancer imposes lesser drag penalty than nortex generators of older types. Increases lift by as much as 30 percent at angles of attack otherwise in poststall region. Device is flat plate wedge with 60 degree sweep angle and attached so it protrudes from leading edge of wing. Tip is sharp point, and edges made thin and sharp to induce good vortical flow. Applications include those intended to increase safety for broad range of aircraft, including trainers, fighters, general-aviation aircraft, and commercial transport aircraft. Nonaerospace applications where flow stall is problem under certain conditions, such as in control of separation in flow diffusers. Other applications in fluid machinery and fluid flow.
Document ID
19920000037
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Ross, Holly M.
(Lockheed Engineering and Sciences Co.)
Johnson, Joseph L., Jr.
(NASA Langley Research Center, Hampton, VA.)
Yip, Long P.
(NASA Langley Research Center, Hampton, VA.)
Stough, H. Paul, III
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 1
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
LAR-14221
Accession Number
92B10037
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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