Naval Air Warfare Center Aircraft Division, Patuxent River, MD

29 -- ENGINE MONITORING SYSTEM POC Mr. Chuck Cumbow, ILS Group 3.2, MS2, 22403 Peary Road, Naval Air Warfare Center Aircraft Division, Patuxent River, MD 20670-5304. This synopsis is a revision to the original synopsis that appeared in the Commerce Business Daily, March 13, 1995 edition. Respondees to that synopsis are advised that there are aspects that have changed and that they may need to resubmit additional or revised information. This synopsis is issued to obtain sources interested in providing information and recommendations for an engine monitoring system (EMS) to be incorporated into the S-3/TF34-GE-400B platform including all derivatives. The EMS should be capable of monitoring and recording as a minimum, the following parameters, both left and right, relative to time: engine fan speed, engine core speed, engine fan inlet and inter-turbine temperatures; engine fuel flow; engine oil pressure; vibrational frequencies and magnitude emitted from the fan, compressor, and turbine; power level angle, aircraft airspeed, altitude, and heading; and, outside air temperature. The ability to record discrete events such as engine start, takeoff, landing and end-of-flight information, and to calculate engine performance is also required. The system must be able to identify, annotate, and provide diagnostic information for all engine operational exceedances. The EMS must also be capable of monitoring and comparing performance parameters (i.e., fan speed, inter-turbine temperature, power level angle, weight on wheels switch position) for both engines and upon detection of thrust degradation in either engine, the system must have the capability to disable the interturbine (T5) control amplifier in one or both engines. The capability for the flight crew to record, at random, engine operating data must be included in the system. Preliminary design concept is oriented toward utilization of an airborne data processing/collection/control unit, of minimal size and weight (approximately 170 cu. in. x 6 lb), capable of sorting data from four 6-hour sorties. The capability to record cumulative engine fan and core speed cyclic data and interturbine temperature excursions is also required. The data must be ''readily'' retrievable by maintenance personnel and capable of being analyzed and displayed using a laptop or personal computer that will be designated as the ''ground sation.'' Software and hardware design should provide for expansion to include additional sensors/ parameters for out year system improvement. System design must be functionally compatible with the S-3 operational environment, shipboard and shorebased. Interested firms should supply information detailing their system designs and capabilities. The government does not intend to pay for the information solicted nor will acknowledgement of receipt be issued. Information should be forwarded to Mr. Chuck Cumbow at the address above. He can be reached at (301) 826-4725 Ext. 100. (0111)

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