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Ten Years of Rotor Flow Studies at ONERA

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For about 10 years now, at the Aerodynamics Department of the Office National d'Etudes et de Recherches Ae´rospatiales (ONERA), experimental and theoretical studies have been performed in order to improve the capability to perform accurate measurements as well as to predict the characteristics of the flow around a helicopter blade. The different phases of the experimental work, as well as analytical studies concerning blade tip planform effects, are presented and the main results obtained are analyzed. From a purely aerodynamic point of view, these results demonstrate that it is possible for high speed rotor blades to define new blade tip shapes that should minimize some of the problems due to transonic flows such as the increase of power required, of vibration level, or of impulsive noise generated by the rotor.
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Document Type: Research Article

Affiliations: Office National d'Etudes et de Recherches Ae´rospatiales, Chatillon, France

Publication date: 1989-01-01

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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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