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Proceedings Paper

Active smart material system for buffet load alleviation
Author(s): Kenneth B. Lazarus; Erik Saarmaa; Gregory S. Agnes
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Paper Abstract

This paper addressed the feasibility of using an active piezoelectric buffet suppression system to reduce buffet vibrations in vertical tail aircraft. During the assessment, functional requirements were defined, models were developed, and full-scale piezoelectric buffet suppression systems were designed and evaluated. A variety of actuator distributions, sensor locations and controller architectures were examined and it was found that significant performance improvements could be achieved (greater than 70 percent) with minimal weight penalties (less than 8 percent). This work enabled the evaluation of issues such as system performance versus added weight and piezoelectric actuator control authority and power requirements. The study showed that the added performance benefit (in terms of vibration reduction and fatigue life) are far greater than the weight penalty, and that piezoelectric actuators have the control authority required to suppress high energy buffet forces within aircraft geometry, weight, and power constraints. Further, the high performance achieved (much greater than that defined in the functional requirements) suggests that systems can be designed with a much lower weight penalty (1/2 to 1/4) than that assumed in this study.

Paper Details

Date Published: 12 May 1995
PDF: 14 pages
Proc. SPIE 2447, Smart Structures and Materials 1995: Industrial and Commercial Applications of Smart Structures Technologies, (12 May 1995); doi: 10.1117/12.209331
Show Author Affiliations
Kenneth B. Lazarus, Active Control eXperts, Inc. (United States)
Erik Saarmaa, Active Control eXperts, Inc. (United States)
Gregory S. Agnes, Air Force Wright Lab. (United States)

Published in SPIE Proceedings Vol. 2447:
Smart Structures and Materials 1995: Industrial and Commercial Applications of Smart Structures Technologies
C. Robert Crowe; Gary L. Anderson, Editor(s)

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