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Analytical Estimate of Rotor Controls Required for a Straight Vortex Disturbance Rejection

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Based on blade element/momentum theory, the aerodynamic impact of a straight-line vortex lying in the plane of a rotor disk is solved analytically for the first time using a realistic swirl velocity profile. The consequences on rotor thrust, on blade aerodynamic moment about the hub, and on the collective and cyclic controls needed for disturbance rejection can thus be computed in closed form. Results are given for a rotor subjected to a wake vortex of a large aircraft and for that of a large wind energy turbine.
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Document Type: Short Communication

Publication date: January 1, 2017

This article was made available online on December 9, 2016 as a Fast Track article with title: "Technical Note: Analytical Estimate of Rotor Controls Required for a Straight Vortex Disturbance Rejection".

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

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