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A Driving Mechanism for High Frequency Combustion Instability in Liquid Fuel Rocket Engines

Published online by Cambridge University Press:  04 July 2016

P. D. McCormack
P. D. McCormack*
Affiliation:
Engineering School, Trinity College, Dublin
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Extract

The problem of combustion pressure oscillation in liquid-fuel rocket motor operation has long been the subject of theoretical and experimental investigations.

The low frequency (less than 200 cps) type of oscillation, known as “chugging”, has been thoroughly analysed and the problem solved (see Crocco, 5th Combustion Symposium, p. 164).

This Note is concerned with the more complex (and more destructive) high frequency oscillations, covering a range from about 1000 to 6000 cps. Such oscillations can resonate with the acoustical modes of the combustion chamber. Longitudinal, tangential and radial oscillating modes have been observed.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 68 , Issue 645 , September 1964 , pp. 633 - 637
Copyright
Copyright © Royal Aeronautical Society 1964

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