Modelling and gain scheduled control of a tailless fighter

This paper presents the nonlinear model and flight control system (FCS) of a tailless fighter aircraft. The presented nonlinear model consists of six coupled second order differential equations. A gain scheduled (GS) controller is developed for the longitudinal dynamics of the aircraft. An approach is provided to select the operating points systematically, such that the stability robustness of the overall gain scheduled control is guaranteed a priori. Nonlinear simulation of the aircraft and flight control system is executed to analyze the performance of the flight control system.