Multivariable Control Laws for the AFTI/F-16

Abstract : Recently evolved multivariable design techniques are used to develop control laws for the AFTI/F-16. The techniques were developed by Professor Brian Porter of the University of Salford, England. In the study, designs are investigated to provide pilot control of vehicle rotational rates and accelerations. This line of inquiry is in contrast to the angle control concepts required in previous applications of these new techniques. A computer-aided design package called MULTI is used in refining the control laws to the preliminary design stage. It proves to be invaluable. An aircraft model is developed in state space form for the AFTI vehicle from linearized aerodynamic data. AFTI is equipped with additional control surfaces to provide Direct Force (CCV) control. Major emphasis is placed on the ability to properly blend CCV and conventional control capabilities for combat maneuvering.