Buffet-induced structural/flight-control system interaction of the X-29A aircraf

An aeroservoelastic interaction between the structural mode response, the buffet on the aircraft and the flight-control systems in the lateral-directional axis was evident during flight envelope expansion operation through 45-degree angle-of-attack in a forward-swept wing aircraft. The buffet-excited interaction, consisting of three modes, influences the control surface actuator commands.