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Pressure investigation of NASA leading edge vortex flaps on a 60 deg Delta wingPressure distributions on a 60 deg Delta Wing with NASA designed leading edge vortex flaps (LEVF) were found in order to provide more pressure data for LEVF and to help verify NASA computer codes used in designing these flaps. These flaps were intended to be optimized designs based on these computer codes. However, the pressure distributions show that the flaps wre not optimum for the size and deflection specified. A second drag-producing vortex forming over the wing indicated that the flap was too large for the specified deflection. Also, it became apparent that flap thickness has a possible effect on the reattachment location of the vortex. Research is continuing to determine proper flap size and deflection relationships that provide well-behaved flowfields and acceptable hinge-moment characteristics.
Document ID
19830010401
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Marchman, J. F., III (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Donatelli, D. A. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Terry, J. E. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Date Acquired
September 4, 2013
Publication Date
February 28, 1983
Subject Category
Aerodynamics
Report/Patent Number
NAS 1.26:169984
NASA-CR-169984
Accession Number
83N18672
Funding Number(s)
CONTRACT_GRANT: NAG1-274
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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