RESEARCH PAPERS: Gas Turbines: Aircraft Engine

A Parametric Starting Study of an Axial-Centrifugal Gas Turbine Engine Using a One-Dimensional Dynamic Engine Model and Comparisons to Experimental Results: Part II—Simulation Calibration and Trade-Off Study

[+] Author and Article Information
A. K. Owen, A. Daugherty

U.S. Army Vehicle Propulsion Directorate, NASA Lewis Research Center, MS 77-6, 21000 Brookpark Road, Cleveland, OH 44135-3191

D. Garrard

Sverdrup Technology, Inc./AEDC Group, 1099 Avenue C, Arnold AFB, TN 37389-9013

H. C. Reynolds, R. D. Wright

General Electric Corporation, Lynn, MA 01910

J. Eng. Gas Turbines Power 121(3), 384-393 (Jul 01, 1999) (10 pages) doi:10.1115/1.2818485 History: Received March 24, 1998; Revised March 23, 1999; Online December 03, 2007


A generic one-dimensional gas turbine engine model, developed at the Arnold Engineering Development Center, has been configured to represent the gas generator of a General Electric axial-centrifugal gas turbine engine in the six-kg/sec airflow class. The model was calibrated against experimental test results for a variety of initial conditions to insure that the model accurately represented the engine over the range of test conditions of interest. These conditions included both assisted (with a starter motor) and unassisted (altitude windmill) starts. The model was then exercised to study a variety of engine configuration modifications designed to improve its starting characteristics and thus quantify potential starting improvements for the next generation of gas turbine engines. This paper presents the model calibration results and the results of the trade-off study. A companion paper discusses the model development and describes the test facilities used to obtain the calibration data.

Copyright © 1999 by The American Society of Mechanical Engineers
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