Article

Journal of Engineering Physics and Thermophysics

, Volume 85, Issue 6, pp 1346-1351

Concerning the problem of dynamic damping of the vibration combustion self-oscillations in a liquid-propellant rocket engine

  • B. I. BasokAffiliated withInstitute of Technical Thermal Physics, National Academy of Sciences of Ukraine
  • , V. V. GotsulenkoAffiliated withInstitute of Technical Thermal Physics, National Academy of Sciences of Ukraine Email author 
  • , V. N. GotsulenkoAffiliated withbInstitute of Business Undertakings “Strategy”

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The reason for the decrease in the amplitude of longitudinal vibration combustion self-oscillations in the combustion chamber of a liquid-propellant rocket engine by means of antipulse partitions has been justified. A mathematical model of the development of combustion instability in such a chamber on attachment of a Helmholtz resonator to it has been obtained. The character of the damping of vibration combustion self-oscillations excited by the action of the Crocco mechanisms and negative thermal resistance, when varying the acoustic parameters of the resonator and of the pressure head characteristics of combustion chamber is established.

Keywords

vibration combustion self-oscillations Helmholtz resonator damping of self-oscillation wave resistance antipulse partitions