Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner
Patent
1988-07-05
1989-07-04
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Upstream of runner
415119, 415914, F04D 2946, F04D 2966
Patent
active
048446955
ABSTRACT:
A method and apparatus for eliminating vortex whistle noise in a radial-to-axial compressor intake uses a plurality of flow fences (36) disposed along the radially inner gas passage boundary (10). The fences (36) disrupt a portion of the swirling gas flow (32) resulting from the position of a plurality of pivotal inlet guide vanes (28) disposed about the radially outward facing inlet (18).
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Vortex Whistle: An Unsteady Phenomenon in Swirling Flow and Its Effects on Steady Flow Field by K. Kurosaka, "AIAA 19th Aerospace Sciences Meeting"--Jan. 12-15, 1981.
A.P.C. publication, Baj, Ser. No. 344,165, published 5/1943.
Banks Ivor
Heikurinen Kari J.
Sanderson John J.
Wilford Donald F.
Garrett Robert E.
Pitko Joseph M.
Pratt & Whitney Canada Inc.
Snyder Troxell K.
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