Synthesis of active controls for flutter suppression on a flight research wingThis paper describes some activities associated with the preliminary design of an active control system for flutter suppression capable of demonstrating a 20% increase in flutter velocity. Results from two control system synthesis techniques are given. One technique uses classical control theory, and the other uses an 'aerodynamic energy method' where control surface rates or displacements are minimized. Analytical methods used to synthesize the control systems and evaluate their performance are described. Some aspects of a program for flight testing the active control system are also given. This program, called DAST (Drones for Aerodynamics and Structural Testing), employs modified drone-type vehicles for flight assessments and validation testing.
Document ID
19770059921
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Abel, I. (NASA Langley Research Center Hampton, VA, United States)
Perry, B., III (NASA Langley Research Center Hampton, VA, United States)
Murrow, H. N. (NASA Langley Research Center Hampton, Va., United States)