Application of a State-Space Wake Model to Tiltrotor Wing Unsteady Aerodynamics
Schrage, Daniel P.
Peters, D. A. (David A.)
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The Peters/He Finite State Wake Model is described in its application to fixed wing aerolasticity. Expressions for coupling this model with a wing, aerodynamically represented by a flat plate with a trailing edge flap, are developed, and fidelity issues are discussed. An application is presented where the wing/wake system is coupled to a proprotor model. The effects of unsteady wing aerodynamics on damping of this system are investigated. It is found that wake effects are small as a result of generally low damping levels in the system due to wing aerodynamic damping.