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Wing rock suppression using forebody vortex controlStatic and free-to-roll tests were conducted in a water tunnel with a configuration that consisted of a highly-slender forebody and 78-deg sweep delta wings. Flow visualization was performed and the roll angle histories were obtained. The fluid mechanisms governing the wing rock of this configuration were identified. Different means of suppressing wing rock by controlling the forebody vortices using small blowing jets were also explored. Steady blowing was found to be capable of suppressing wing rock, but significant vortex asymmetries had to be induced at the same time. On the other hand, alternating pulsed blowing on the left and right sides of the forebody was demonstrated to be potentially an effective means of suppressing wing rock and eliminating large asymmetric moments at high angles of attack.
Document ID
19910069122
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ng, T. T.
(Toledo, University OH, United States)
Ong, L. Y.
(Toledo Univ. OH, United States)
Suarez, C. J.
(Toledo Univ. OH, United States)
Malcolm, G. N.
(Eidetics International, Inc. Torrance, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 91-3227
Accession Number
91A53745
Funding Number(s)
CONTRACT_GRANT: NAS2-12989
Distribution Limits
Public
Copyright
Other

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