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Proceedings Paper

Controlled aeroelastic response and airfoil shaping using adaptive materials and integrated systems
Author(s): Jennifer L. Pinkerton; Anna-Maria Rivas McGowan; Robert W. Moses; Robert C. Scott; Jennifer Heeg
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Paper Abstract

This paper presents an overview of several activities of the Aeroelasticity Branch at the NASA Langley Research Center in the area of applying adaptive materials and integrated systems for controlling both aircraft aeroelastic response and airfoil shape. The experimental results of four programs are discussed: the Piezoelectric Aeroelastic Response Tailoring Investigation (PARTI); the adaptive neural control of aeroelastic response (ANCAR) program; the actively controlled response of buffet affected tails (ACROBAT) program; and the Airfoil THUNDER Testing to ascertain charcteristics (ATTACH) project. The PARTI program demonstrated active flutter control and significant reductions in aeroelastic response at dynamic pressures below flutter using piezoelectric actuators. The ANCAR program seeks to demonstrate the effectiveness of using neural networks to schedule flutter suppression control laws. The ACROBAT program studied the effectiveness of a number of candidate actuators, including a rudder and piezoelectric actuators, to alleviate vertical tail buffeting. In the ATTACH project, the feasibility of using thin-layer composite-unimorph piezoelectric driver and sensor (THUNDER) wafers to control airfoil aerodynamic characteristics was investigated. Plans for future applications are also discussed.

Paper Details

Date Published: 1 May 1996
PDF: 12 pages
Proc. SPIE 2717, Smart Structures and Materials 1996: Smart Structures and Integrated Systems, (1 May 1996); doi: 10.1117/12.239019
Show Author Affiliations
Jennifer L. Pinkerton, NASA Langley Research Ctr. (United States)
Anna-Maria Rivas McGowan, NASA Langley Research Ctr. (United States)
Robert W. Moses, NASA Langley Research Ctr. (United States)
Robert C. Scott, NASA Langley Research Ctr. (United States)
Jennifer Heeg, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 2717:
Smart Structures and Materials 1996: Smart Structures and Integrated Systems
Inderjit Chopra, Editor(s)

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