An individual blade controller designed to attenuate the aeroelastic response of helicopter rotors in forward flight by tailoring the blade root attachment conditions is developed. A feasibility analysis indicates that the open-loop controller which incorporates both passive and active design techniques is energy efficient and may be realized by available adaptive structures.

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Conference Smart Structures and Materials 1995: Smart Structures and Integrated Systems
Nitzsche, F. (1995). Active and passive control of the aeroelastic response of helicopter rotors using smart materials to tailor the blade root flexibility. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 20–27).