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RESEARCH PAPERS: Gas Turbines: Structures and Dynamics

Wave-Rotor-Enhanced Gas Turbine Engines

[+] Author and Article Information
G. E. Welch

U. S. Army Research Laboratory

S. M. Jones, D. E. Paxson

NASA Lewis Research Center, 21000 Brookpark Road, M/S 77-6, Cleveland, OH 44135

J. Eng. Gas Turbines Power 119(2), 469-477 (Apr 01, 1997) (9 pages) doi:10.1115/1.2815598 History: Received January 01, 1997; Online November 19, 2007

Abstract

The benefits of wave rotor topping in small (300- to 500-kW [400- to 700-hp] class) and intermediate (2000- to 3000-kw [3000- to 4000-hp] class) turboshaft engines, and large (350- to 450-kN [80,000- to 100,000-lbf ] class) high-bypass-ratio turbofan engines are evaluated. Wave rotor performance levels are calculated using a one-dimensional design/analysis code. Baseline and wave-rotor-enhanced engine performance levels are obtained from a cycle deck in which the wave rotor is represented as a burner with pressure gain. Wave rotor topping is shown to enhance the specific fuel consumption and specific power of small- and intermediate-sized turboshaft engines significantly. The specific fuel consumption of the wave-rotor-enhanced large turbofan engine can be reduced while it operates at a significantly reduced turbine inlet temperature. The wave-rotor-enhanced engine is shown to behave off-design like a conventional engine. Discussion concerning the impact of the wave rotor/gas turbine engine integration identifies technical challenges.

Copyright © 1997 by The American Society of Mechanical Engineers
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