ACTIVE CONTROL OF STORE-INDUCED FLUTTER IN INCOMPRESSIBLE-FLOW

An active method for enhancing the performance and improving the robus tness of a decoupler pylon-mounted store flutter suppression system is presented. The proposed active decoupler pylon involves the use of a piezoceramic wafer strut as an actuator that acts as a soft spring bet ween the wing and the store. A two degree-of-freedom typical section o f an airfoil is used to represent the structural model of the wing. Th e circulatory component of the incompressible aerodynamic loads is mod eled using an approximation to the Theodorsen function. The GBU-8/B st ore configuration of an F-16 aircraft is used for the analysis. A clas sical robust control algorithm called the loop transfer recovery metho d is applied to design a controller for the linear wing/store model. S ome simulations are presented using singular-value Bode plots for robu st stability and nominal performance analysis.