Modeling of aerodynamic forces in the Laplace domain with minimum number of augmented states for the design of active flutter suppression systemsA method is proposed by which an aeroservoelastic problem is brought to a state-space form with a minimum number of augmented aerodynamic terms. The examples treated in this work relate to NASA's Drone for Aerodynamic and Structural Testing-Aerodynamic Research Wing 1 (DAST-ARW1) and to the YF-17 fighter model. It is shown that in all cases considered, the method yields a very good accuracy regarding the flutter parameters and the dynamic behavior of the systems, using only two augmented aerodynamic states. The method should prove useful in the design of lower order control laws based on optimal control theory.
Document ID
19890065190
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nissim, E. (NASA Flight Research Center Edwards, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Aircraft Stability And Control
Report/Patent Number
AIAA PAPER 89-3466
Meeting Information
Meeting: AIAA Guidance, Navigation and Control Conference