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Proceedings Paper

Preliminary Mach-scale hover testing of an integral twist-actuated rotor blade
Author(s): John P. Rodgers; Nesbitt W. Hagood
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Paper Abstract

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.

Paper Details

Date Published: 27 July 1998
PDF: 18 pages
Proc. SPIE 3329, Smart Structures and Materials 1998: Smart Structures and Integrated Systems, (27 July 1998); doi: 10.1117/12.316901
Show Author Affiliations
John P. Rodgers, Massachusetts Institute of Technology (United States)
Nesbitt W. Hagood, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 3329:
Smart Structures and Materials 1998: Smart Structures and Integrated Systems
Mark E. Regelbrugge, Editor(s)

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