DETERMINATION OF DAMPER AMPLITUDE-PHASE FREQUENCY CHARACTERISTICS Russian patent published in 2015 - IPC F02K9/96 

FIELD: engines and pumps.

SUBSTANCE: claimed invention can be used in the development of liquid-propellant rocket engines equipped with dampers. It is meant, in particular, for determination of amplitude-phase frequency characteristics of a gas damper with perforated insert and calculation of the damper optimum parameters whereat damper parameters are optimum. Claimed process comprises the measurement and comparison of damper responses to perturbation effects composed by harmonic oscillations. Note here that said damper is mounted at the pipeline mockup. The system is filled with working fluid to create the working pressure. Said gas damper is supercharged to the fluid working level thereat. Series of perturbation effects are generated as harmonic oscillations with the operating range of frequencies for preset magnitudes of pressure oscillation amplitudes, different for every series. Damper responses as the pressure oscillation amplitudes in the damper gas chamber and in the pipeline mockup at the damper inlet as well as phase shift between said amplitudes.

EFFECT: higher precision of determination of amplitude-phase frequency responses.

6 cl, 1 dwg