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Servo-stabilization of low-frequency oscillations in liquid propellant rocket motors.

Marble, Frank E. (1955) Servo-stabilization of low-frequency oscillations in liquid propellant rocket motors. Zeitschrift für Angewandte Mathematick und Physik, 6 (1). pp. 1-35. ISSN 0044-2275. http://resolver.caltech.edu/CaltechAUTHORS:20110118-140949997

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Abstract

Two points of view may be taken with regard to the undesirable pressure oscillations in rocket motors which arise from instability of combustion, acoustic resonance, coupled oscillations of chamber pressure and propellant flow rate, as well as from more obscure sources. One is to eliminate the underlying cause of instability through change in mechanical design or modification of propellant properties; this is possible when the mechanism of instability is understood and its removal is not detrimental to rocket performance. The alternative is, as was demonstrated by H. S. Tsien [1], to modify the system dynamics by utilizing a feedback servo control which, for example, senses pressure fluctuations in the combustion chamber and modifies the propellant feeding rate at the proper frequency and phase to damp the fluctuation. Servo-stabilization provides the distinct advantage that stability need not be a major concern during rocket design, relying upon the feedback system to insure stable operation. Furthermore these concepts suggest the possibility of eliminating empirically an undesirable oscillation even when its basic cause is not known.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/BF01600733 DOIUNSPECIFIED
http://www.springerlink.com/content/p676k462x1n31633/PublisherUNSPECIFIED
Additional Information:© 1955 Springer. Received: February 2, 1954.
Group:Guggenheim Jet Propulsion Center
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Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion Center UNSPECIFIED
Record Number:CaltechAUTHORS:20110118-140949997
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110118-140949997
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21796
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:19 Jan 2011 22:50
Last Modified:26 Dec 2012 12:51

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