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Measurements of Rotor Tip Vortices Using Three‐Component Laser Doppler Velocimetry

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Phase‐resolved laser Doppler measurements were made of the three‐dimensional velocity field and tip vortex structure in the wake of a hovering rotor. A one‐bladed rotor was used to generate a single and nominally helical shaped vortex filament in the rotor flow field. The measurements were analyzed to establish the detailed structure of the tip vortex, such as the tangential and axial velocity profiles, circulation profiles, and viscous core growth with vortex age.

Document Type: Research Article


Affiliations: Center for Rotorcraft Education and Research, Department of Aerospace Engineering, University of Maryland at College Park, Maryland 20742.

Publication date: October 1, 1996

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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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    Authors can find submission guidelines and related information on the AHS website.

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