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Analysis of a Swashplateless Helicopter Rotor With Active Servopaddles

[+] Author Affiliations
Anne Brindejonc, Pierre-Antoine Aubourg

Eurocopter, Marignane, France

François Malburet

Ecole des Arts et Métiers, Aix-en-Provence, France

Paper No. FEDSM2008-55161, pp. 1061-1070; 10 pages
doi:10.1115/FEDSM2008-55161
From:
  • ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences
  • Volume 1: Symposia, Parts A and B
  • Jacksonville, Florida, USA, August 10–14, 2008
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4840-1 | eISBN: 0-7918-3832-3
  • Copyright © 2008 by ASME

abstract

The present paper describes a novel concept of actively controlled Hiller type servopaddle to achieve rotor primary control. The blades on the swashplateless rotor are coupled to a servopaddle with a piezoelectrically actuated aileron. The aileron commands the paddle pitch which generates a change in the paddle ap angle and blade pitch angle via a mechanical linkage. The system { blade, paddle, aileron} is independent from any other { blade, paddle, aileron} assembly. Therefore, the active servopaddle can create both cyclic and collective inputs. A four degree-of-freedom analysis including aileron dynamics has been developed to predict the dynamic behavior and assess the feasibility of such a swashplateless rotor. The analysis is used to investigate the effect of system parameters on the blade control authority.

Copyright © 2008 by ASME
Topics: Rotors

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