1981-10-01

PROPULSION MULTIPLEXER (PMUX) SYSTEM THE MISSING LINK 811078

The commercial airline emphasis on more efficient and reliable engines with lower maintenance costs has resulted in the use of in-flight engine condition monitoring equipment as part of the Airborne Integrated Data System (AIDS). To accomplish this task, the AIDS system must receive approximately twenty-five engine parameter signals.
The integraty of the AIDS input signals from the engine is not the responsibility of a single equipment supplier; therefore, when the user airlines have encountered system problems, solutions have been slow in coming.
A viable solution to this problem is to provide a centralized, engine-mounted data processing device for the engine signals. This missing link is under development. It has been named the Propulsion Multiplexer (PMUX) System and has been specified for Pratt and Whitney Aircraft and General Electric engines for the Airbus Industrie A310 aircraft.

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