Modeling the Benchmark Active Control Technology Wind-Tunnel Model for Application to Flutter Suppression

Author:: Waszak, Martin R.
Published:: [1996].
Physical Description:: 1 electronic document

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Summary:

This paper describes the formulation of a model of the dynamic behavior of the Benchmark Active Controls Technology (BACT) wind-tunnel model for application to design and analysis of flutter suppression controllers. The model is formed by combining the equations of motion for the BACT wind-tunnel model with actuator models and a model of wind-tunnel turbulence. The primary focus of this paper is the development of the equations of motion from first principles using Lagrange's equations and the principle of virtual work. A numerical form of the model is generated using values for parameters obtained from both experiment and analysis. A unique aspect of the BACT wind-tunnel model is that it has upper- and lower-surface spoilers for active control. Comparisons with experimental frequency responses and other data show excellent agreement and suggest that simple coefficient-based aerodynamics are sufficient to accurately characterize the aeroelastic response of the BACT wind-tunnel model. The equations of motion developed herein have been used to assist the design and analysis of a number of flutter suppression controllers that have been successfully implemented.

Other Subject(s):

Aircraft Design, Testing and Performance

Collection:

NASA Technical Reports Server (NTRS) Collection.

Note:

Document ID: 20040110943.
AIAA Paper 96-3437.
AIAA Atmospheric Flight Mechanics Conference; Unknown.

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