Structural Technology and Analysis Program (STAP). Delivery Order 0017: Active Vibration Suppression Technology Buffet Load Alleviation (BLA) Program.

摘要

This final report documents the development of an experimental buffet load alleviation (BLA) system that utilizes distributed piezoelectric actuators in conjunction with a closed-loop rudder control system to reduce the structural dynamic response of fighter aircraft vertical tails to buffet loads. The BLA system was defined analytically with a detailed finite element model of the tail structure and piezoelectric actuators. Oscillatory aerodynamics were included along with a buffet forcing function to complete the aeroservoelastic model of the tail with rudder control surface. Two single-input single-output (SISO) controllers were designed one for the active rudder and one for the active piezoelectric actuators. The results from the analytical open- and closed-loop simulation were used to predict the system performance.