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Preliminary Study of Radial Flow Effects on Rotor Blades

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The accumulation of experimental flight‐test and model rotor data, has permitted a stall delaying phenomenon to be observed, such that the most advanced rotor‐performance theory tends to be unduly conservative in estimating rotor lift capability. An example of this conservativeness is shown in Figure A. Despite this lift augmentation, there is no experimental indication of a reduction in the separation drag at the predicted stall point; the theoretical calculations using the refined aerodynamic theory are in reasonable agreement with experimental drag results.
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Document Type: Research Article

Affiliations: Rotor Research & Development, Vertol Division, The Boeing Company, Morton, Pennsylvania

Publication date: 1966-07-01

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  • The Journal of the American Helicopter Society is the world's only scientific journal dedicated to vertical flight technology. It is a peer-reviewed technical journal published quarterly by AHS International and presents innovative papers covering the state-of-the-art in all disciplines of rotorcraft design, research and development. (Please note that AHS members receive significant discounts on articles and subscriptions.)

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