Control Surface Spanwise Placement in Active Flutter Suppression Systems

Nissim, E. and Burken, John J. (1988) Control Surface Spanwise Placement in Active Flutter Suppression Systems. Technical Report NASA TP-2873, Research Engineering, NASA Dryden Flight Research Center.

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Abstract

A method is developed that determines the placement of an active control surface for maximum effectiveness in suppressing flutter. No specific control law is required by this method which is based on the aerodynamic energy concept. It is argued that the spanwise placement of the active controls should coincide with the locations where maximum energy per unit span is fed into the system. The method enables one to determine the distribution, over the different surfaces of the aircraft, of the energy input into the system as a result of the unstable fluttering mode. The method is illustrated using three numerical examples.

EPrint Type:	NASA Technical Publication
Keywords:	Active controls, Aeroservoelasticity, Flutter suppression
Subjects:	(31 - 39) Engineering: (39) Structural Mechanics
ID Code:	481
Deposited On:	09 January 2006
Additional Information:	19 pages. This research was undertaken while Eli Nissim held a National Research Council - NASA (Ames Research Center, Dryden Flight Research Facility) Research Associateship. The author was on leave from Technion-Israel Institute of Technology.