Modeling the Benchmark Active Control Technology Wind-Tunnel Model for Application to Flutter Suppression
- Waszak, Martin R.
- Physical Description:
- 1 electronic document
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- 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.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 20040110943.
AIAA Paper 96-3437.
AIAA Atmospheric Flight Mechanics Conference; Unknown.
- Copyright, Distribution under U.S. Government purpose rights.
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