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Comprehensive Comparisons of Rotormap and Blade Element Models

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Abstract:

This study compares blade element and rotor map models under identical operational conditions to assess the significance of the increased sophistication of the blade element models on simulation fidelity. Comparisons of trim, performance, transient response and frequency response are used to evaluate the models. Finally, the simulation models are integrated with a manned flight simulator and assessed by pilots. For the static analysis, the blade element and rotormap model predictions correlate well with the flight test results. For the time response analysis, the blade element model shows better correlation with the flight test data than the rotormap model. This advantage of the blade element model is more visible in rapid maneuvers. During the piloted tests, the blade element model is evaluated as more representative of the actual helicopter.

Document Type: Research Article

DOI: http://dx.doi.org/10.4050/JAHS.44.42

Affiliations: Advanced Rotorcraft Technology, Inc., 1685 Plymouth St., Mountain View, CA 94043

Publication date: January 1, 1999

More about this publication?
  • 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.)

    Journal subscribers who are AHS members log in here if you are not already logged in.

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

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