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RESEARCH PAPERS: Gas Turbines: Aircraft

Design Considerations of a Versatile Simulator for High-Bypass Turbofans

[+] Author and Article Information
C. Balan

GE Aircraft Engines, Evendale, OH 45215

J. Eng. Gas Turbines Power 117(1), 31-37 (Jan 01, 1995) (7 pages) doi:10.1115/1.2812778 History: Received February 12, 1993; Online November 19, 2007

Abstract

The continuing requirement for performance improvement of higher thrust turbofans is met by increased bypass ratios. The trend toward higher bypass ratios and relatively large-diameter low-pressure-ratio fans requires innovative design approaches, which include shorter inlets, slimmer nacelles, shorter fan ducts and exhaust systems, and possible elimination of thrust reverser. The success of this new generation of high-bypass ducted turbofans depends on understanding the acoustic impact from reduced treatment areas, inlet-fan coupling and operability, as well as overall system performance. To achieve these goals a versatile scale model propulsion simulator large enough to operate as a fan rig, yet small enough to be installed in a wind tunnel for evaluating overall acoustic, operability, and system performance, was developed. The criteria of designing such a simulator and its capabilities are discussed in this paper.

Copyright © 1995 by The American Society of Mechanical Engineers
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