ABSTRACT
Control theory and system design methodologies are becoming more sophisticated each year; but at the same time the aircraft systems are becoming increasingly complex. The initial design effort compared results of classical techniques performed by McDonnell Douglas Aerospace and multivariable techniques performed by Honeywell Systems Research Center. In general terms, a classical design develops in a step-by-step process to satisfy textbook inner- and outer-loop requirements in the military flying-qualities specification. A completely new design approach was used in the classical development of the flaps-up longitudinal control laws in the conventional mode. The most important result, of course, is how the flying qualities were rated in flight. The real purpose of the last flight of the program was to evaluate the sland mode in conjunction with autonomous landing guidance in a severe environment, night. The chapter describes the development of a full-envelope integrated flight/propulsion control system.
