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Fernandez, Raymond Caesar (1953-01-01) Use of a sampling feedback system for stabilization of low frequency oscillations in liquid monopropellant rocket motors. http://resolver.caltech.edu/CaltechETD:etd-04232003-090202


Type of Document Engineer's Thesis
Author Fernandez, Raymond Caesar
URN etd-04232003-090202
Persistent URL http://resolver.caltech.edu/CaltechETD:etd-04232003-090202
Title Use of a sampling feedback system for stabilization of low frequency oscillations in liquid monopropellant rocket motors
Degree Engineer's Degree
Option Aeronautics
Advisory Committee
Advisor Name Title
Unknown Committee Member
Keywords
  • None
Date of Defense 1953-01-01
Availability unrestricted
Abstract
Instability in liquid monopropellant rocket motors may be corrected by the use of a feedback servomechanism. This mechanism consists essentially of a pressure pickup which senses pressure oscillations in the combustion chamber, an amplifier and a variable capacitance in the feed line. It is shown that a feedback system with an arbitrary sampling circuit which causes the capacitance in the line to complete its own cycle of variation once for every several cycles of combustion pressure oscillations can be made to stabilize the oscillations for all values of combustion time lag for a particular motor. It is believed that this system of stabilization may be applied to monopropellant motors in general.

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