Active smart material system for buffet load alleviation

Kenneth B. Lazarus; Erik Saarmaa; Gregory S. Agnes

doi:10.1117/12.209331

12 May 1995 Active smart material system for buffet load alleviation

Kenneth B. Lazarus, Erik Saarmaa, Gregory S. Agnes

Proceedings Volume 2447, Smart Structures and Materials 1995: Industrial and Commercial Applications of Smart Structures Technologies; (1995) https://doi.org/10.1117/12.209331
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

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.

Citation Download Citation

Kenneth B. Lazarus, Erik Saarmaa, and Gregory S. Agnes "Active smart material system for buffet load alleviation", Proc. SPIE 2447, Smart Structures and Materials 1995: Industrial and Commercial Applications of Smart Structures Technologies, (12 May 1995); https://doi.org/10.1117/12.209331

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