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27 July 1998 Preliminary Mach-scale hover testing of an integral twist-actuated rotor blade
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An active blade designed for the control of rotor vibrations and noise has been developed. Active fiber composites have been integrated within the composite rotorblade spar to induced shear stresses. These shear stresses result in a distributed twisting moment along the blade. The design of an active blade model based on a 1/6th Mach-scale Chinook CH-47D is reviewed. The design goals included +/- 2 degree(s) of blade tip twist with a maximum of 20% added blade mass. Details of the requirements for the active fiber composites subjected to 160 kt, 3g maneuver loads and the experimentally determined actuator capabilities are reviewed. The testing of a half-span active blade test article is described. Twist actuation performance is compared with model predictions. Preliminary results from bench testing and full Mach-scale hover testing of the integral blade are presented.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John P. Rodgers and Nesbitt W. Hagood "Preliminary Mach-scale hover testing of an integral twist-actuated rotor blade", Proc. SPIE 3329, Smart Structures and Materials 1998: Smart Structures and Integrated Systems, (27 July 1998);

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