Aeronautics and astronautics – Miscellaneous
Patent
1992-02-14
1994-08-23
Huppert, Michael S.
Aeronautics and astronautics
Miscellaneous
244130, 244 1R, B64C 2100
Patent
active
053400542
ABSTRACT:
The oscillations found to occur in the cavities of an structural frame moving through a fluid are substantially eliminated by the adoption of perturbation elements located at the leading edge of the cavity and reflecting any remaining oscillations out of the cavity at the trailing edge. The perturbation elements may take the form of multiple pins of various shape and geometrical arrangement which prevents the generation and growth of vortices causing acoustic oscillations. The reflection of remaining oscillations out of the cavity may be accomplished by ramping the trailing edge of the cavity.
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Barnes W. McCormick, Aerodynamics, Aeronautics, and Flight Mechanics, 1979, p. 167-168.
Gutmark Ephraim
Schadow Klaus C.
Smith Robert A.
Wilson Kenneth J.
Bidwell Anne E.
Forrest, Jr. John L.
Hampsch Robert J.
Huppert Michael S.
Sliwka Melvin J.
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