LIQUID METAL REGENERATOR FEASIBILITY STUDY FOR A LIGHT-WEIGHT TURBOSHAFT ENGINE
CURTISS-WRIGHT CORP QUEHANNA PA
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Feasibility was shown for the use of a liquidmetal-coupled regenerator incorporated in a 71-pressure-ratio, 1000-hp turboshaft study engine. The weight of the regenerator for 0.525 over-all effectiveness is 235 lb. The increase in the engine weight resulting from incorporating this regenerator in the powerplant system is 303 lb. The regenerator design weights are based on current state-of-the-art materials and fabrication techniques for the heat exchanger elements. Use of thin fin material, available before the end of the year would reduce the weight of the heat exchanger to 200 lb. No attempt was made to optimize the engine cycle or powerplant configuration to minimize regenerator weight. The performance of the study engine with regeneration includes the attractive specific fuel consumption at 100 power of 0.446 lb hp hr, and below 0.55 lbhp hr to 40 rated power. Detail performance calculations were made to support the feasibility of this regeneratorengine composite.
- Jet and Gas Turbine Engines