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Proceedings Paper

Self-powered smart blade: helicopter blade energy harvesting
Author(s): Matthew Bryant; Austin Fang; Ephrahim Garcia
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Paper Abstract

A novel energy harvesting device powered by aeroelastic flutter vibrations is proposed to generate power for embedded wireless sensors on a helicopter rotor blade. Such wireless sensing and on-board power generation system would eliminate the need for maintenance intensive slip ring systems that are required for hardwired sensors. A model of the system has been developed to predict the response and output of the device as a function of the incident wind speed. A system of coupled equations that describe the structural, aerodynamic, and electromechanical aspects of the system are presented. The model uses semi-empirical, unsteady, nonlinear aerodynamics modeling to predict the aerodynamic forces and moments acting on the structure and to account for the effects of vortex shedding and dynamic stall. These nonlinear effects are included to predict the limit cycle behavior of the system over a range of wind speeds. The model results are compared to preliminary wind tunnel tests of a low speed aeroelastic energy harvesting experiment.

Paper Details

Date Published: 10 April 2010
PDF: 10 pages
Proc. SPIE 7643, Active and Passive Smart Structures and Integrated Systems 2010, 764317 (10 April 2010); doi: 10.1117/12.847310
Show Author Affiliations
Matthew Bryant, Cornell Univ. (United States)
Austin Fang, Cornell Univ. (United States)
Ephrahim Garcia, Cornell Univ. (United States)


Published in SPIE Proceedings Vol. 7643:
Active and Passive Smart Structures and Integrated Systems 2010
Mehrdad N. Ghasemi-Nejhad, Editor(s)

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