A digital electronic supervisory control system is incorporated in the JT9D-7R4 engine and is being applied in the new Boeing 767 and Airbus A-310 aircraft. The digital control adjusts the governor setting of the hydromechanical fuel control to provide precise thrust management, rotor speed limiting and turbine temperature protection. A significant degree of integration with the aircraft has been established while maintaining separation of engine and aircraft control functions. The engine control receives Air Data Computer information and other signals as used in the aircraft auto throttle control system for establishing power setting relative to engine thrust ratings. The engine control provides its own measurements both to validate Air Data computer information and to provide a back-up in the event that air data is interrupted. The control supplies digital information to the aircraft for cockpit display and maintenance purposes. The system has successfully completed Federal Aviation Administration certification testing and has initiated flight testing with the JT9D-7R4 engine. (Wassmann)
Digital control makes a commercial debut on the JT9D engine
Erste kommerzielle Digitalsteuerung fuer das JT9D Triebwerk
ASME-Papers ; 1-4
1981
4 Seiten, 4 Bilder, 4 Quellen
Aufsatz (Konferenz)
Englisch
The JT9D Engine Control System
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