The paper describes a joint British Aerospace/Rolls Royce study on the role of the Powerplant Control System in a high technology combat aircraft. The need to reduce pilot workload and the trend towards the use of Integrated Avionic Systems and Serial Digital Data Transmission on modern aircraft projects has forced a change in the traditional approach to powerplant control system design. The principles of Fault Tolerance with the ability of the Powerplant Control System to survive combinations of faults is described. An ideal system is presented which will provide benefits for the airframe constructor. The utilization of cheap, accurate and reliable microprocessor devices with compatible L.S.I. MIL-STD-1553 Chip Sets offers an attractive solution to aircraft avionic data transmission systems including Powerplant Control and Management for future aircraft.

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