Design and piloted simulation of a robust integrated flight and propulsioncontroller

A robust integrated Eight and propulsion controller is designed for an expe rimental short takeoff and vertical landing aircraft configuration, using t he method of H-infinity loop-shaping. The aircraft model used in the study is based on the Harrier air frame with the Pegasus engine replaced by a the rmodynamic simulation of a Rolls-Royce Spey power plant, to allow the incor poration of advanced engine control concepts. The controller follows a two- inceptor strategy to command Eight-path angle rate and velocity along the E ight path, while simultaneously keeping several airframe and engine variabl es within specified safety limits. The centralized integrated flight and pr opulsion control system is evaluated in piloted simulation trials. Results indicate that level 1 or 2 Eying qualities are achieved over the low speed powered lift region of the flight envelope.