Engine Evaluation of Advanced Technology Control Components
Final rept. 7 Mar 1974-1 Feb 1976
COLT INDUSTRIES INC WEST HARTFORD CT CHANDLER EVANS CONTROLS DIV
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This report describes the results of a design, fabrication, bench test, and evaluation of an engine-mounted advanced technology gas turbine engine control system on which development was started under previous Army contracts. The control system comprises a full-authority electronic computer module, a fuel metering and inlet guide vane actuator module, a high-speed fuel pump and alternator module, a radiation pyrometer for blade temperature limiting, and other required sensors. The control modules are evaluated on an experimental Army gas turbine engine STAGG which was under development at Pratt and Whitney Florida Research and Development Corporation. Tests of the engine-mounted system were conducted in two phases. An environmental phase allowed the control components to be debugged and evaluated over the full power range of the engine while the engine was being controlled by a test stand control system. The second phase of testing demonstrated active control of the engine. All of the engine-mounted control testing was conducted in accordance with the planned engine test schedule on a noninterference basis. Approximately 44 hours of engine-mounted testing were accumulated, and about 8.6 of these hours included active engine control. During this testing, all of the control modules were successfully evaluated including the control of engine accelerations, decelerations, speed governing, inlet guide vane scheduling and ignition.
- Jet and Gas Turbine Engines