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Ground Turbine Engines: Which Cycle is Best?
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English
Abstract
Current component configuration conventions for U.S. Army ground vehicle gas turbine engines place the heat exchanger downstream of the power turbine, especially in heavy duty applications. However, a gas turbine with the heat exchanger upstream of the power turbine has been proposed by Shapiro et al of Bet-Shemesh Engines, Ltd. Indeed, a U.S. patent (No. 4,506,502) was issued in 1985 for this configuration, and a paper describing this cycle was published in 1990. Claimed benefits are reduced specific fuel consumption (SFC) and high power density. In general, Shapiro used relatively low pressure ratios and slightly low component efficiencies in his analyses to support these claims. This paper describes the results of an in-depth cycle analysis study of this proposed configuration with more current component performances and higher pressure ratios.
Authors
Citation
Danielson, E. and Hitchcock, J., "Ground Turbine Engines: Which Cycle is Best?," SAE Technical Paper 950774, 1995, https://doi.org/10.4271/950774.Also In
References
- Shapiro, J. Gas Turbine Engines
- Shapiro, J. Levy A. 1990 Gas Turbine with Intermediate Heat Exchanger for Flight Application
- National Aeronautics and Space Administration The Navy/NASA Engine Program (NNEP89) - A User' s Manual 1991
- Brockett, W. Koschier A. 1992 LV100 AIPS Technology-For Future Army Propulsion ASME Paper No. 92-G1-391
- U.S. Army Request for Proposal (RFP) 1984