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Supersonic fan bladingRadially extending rotor blades are disposed on a hub to form a supersonic propulsion fan for a turbofan engine. The peripheral spacing of the blades is such as to avoid forming a channel or passageway between adjacent blades. Each has a flat trailing surface extending from the leading edge at least as far to the rear as to cause any pressure waves which might originate on the blade surface to strike the leading surface of the following blade rather than propagate upstream of the blade row. The flat trailing surface of each blade makes an angle with the axis of rotation such that the blade is parallel to a gas inflow into the blades.
Document ID
19740020113
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Goldstein, A. W.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
June 28, 1974
Subject Category
Communications
Accession Number
74N28226
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LEW-11402-1|US-PATENT-3,820,918
Patent Application
US-PATENT-APPL-SN-219806
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