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TECHNICAL BRIEFS

A Simplified Dynamic Model of the Space Shuttle Main Engine

[+] Author and Article Information
Ahmet Duyar, Vasfi Eldem

Florida Atlantic University, Department of Mechanical Engineering, Boca Raton, FL 33431

Walter Merrill, Ten-Huei Guo

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, Ohio 44135

J. Dyn. Sys., Meas., Control 116(4), 815-819 (Dec 01, 1994) (5 pages) doi:10.1115/1.2899286 History: Received November 15, 1990; Revised March 01, 1993; Online March 17, 2008

Abstract

This paper presents a simplified model of the space shuttle main engine (SSME) dynamics valid within the range of operation of the engine. This model is obtained by linking the linearized point models obtained at 25 different operating points of the SSME. The simplified model was developed for use with a model-based diagnostic scheme for failure detection and diagnostics studies, as well as control design purposes. This simplified model was tested by designing an input signal which covers the whole range of operating points considered and then comparing the responses of linked model and the nonlinear simulation. The comparison indicated good agreement between these responses.

Copyright © 1994 by The American Society of Mechanical Engineers
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