Power harvesting in a helicopter rotor using a piezo stack in the lag damper

Jong de, P.H. and Boer de, A. and Loendersloot, R. and Hoogt van der, P.J.M. (2012) Power harvesting in a helicopter rotor using a piezo stack in the lag damper. Journal of intelligent material systems and structures . ISSN 1530-8138

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Abstract:	A piezoelectrically augmented helicopter lag damper has been simulated for the purpose of harvesting electrical energy within the rotor of the aircraft. This energy can then be consumed locally for sensing, processing and transmission of data to the cockpit. An 8.15m radius rotor is considered and in-plane rigid lagging motion forms the prime excitation of the damper. The piezoelectric stack is installed within the rod of the damper in such a manner that the stack is submitted to all damper loads. MATLAB and Simulink are used to simulate a simplified blade model. A number of electrical harvesting circuits are investigated and the piezo stack is optimized for each circuit. Also the effect of nonlinear capacitance of the piezo material is investigated revealing a profound effect. Important design parameters are identified and optimized resulting in a power output of 5.1W for a steady 130 knots forward flight profile.
Item Type:	Article
Copyright:	© 2012 Sage
Faculty:	Engineering Technology (CTW)
Research Chair:	Structural Dynamics and Acoustics (SD&A)
Research Group:	Applied Mechanics (AM)
Link to this item:	http://purl.utwente.nl/publications/81328
Official URL:	http://dx.doi.org/10.1177/1045389X12460336
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