Research on the Correction Method of Thermal Environment Vibration at the Moment of High-Altitude Simulation Ignition for a Certain Engine

Le résumé fourni par la source

In order to calibrate the measurement errors of vibration amplitudes for different heat flux densities, a calibration model for acceleration amplitude measurement errors was established to adapt to the instantaneous thermal environment of attitude control engine high-altitude simulation ignition. A vibration correction model for high-altitude simulation ignition instantaneous thermal environment was constructed; On this basis, a testing device for correcting the thermal environment vibration at the moment of ignition is designed to achieve accurate measurement of vibration parameters under different working states of the engine ignition state, reduce the transient external heat flow simulation error of the infrared light array, and obtain accurate parameter data of thermal environment vibration at the moment of high-altitude simulation ignition of the attitude control engine, thereby improving the accurate evaluation level of the flight performance of the attitude control engine; Finally, the effectiveness and practicality of this method were verified through experimental verification.

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