Wing Store Active Flutter Suppression-Correlation of Analyses and Wind-Tunnel Data

Abstract

Through analyses and recent wind-tunnel tests, active flutter suppression has been shown to be a promising technique for preventing wing/external store flutter restrictions. Data measured in the wind tunnel have been used to evaluate the validity of a method for the design and analysis of active feedback control systems. The results of an analytical effort to study the behavior of an active flutter suppression wind-tunnel model are presented and compared with available test data. For this application, the model was aerodynamically represented by subsonic doublet lattice theory and stability was evaluated using modified Nyquist criteria.