Prediction of Acoustic and Vibration Environment for Launch Vehicles Based on Virtual Statistical Energy Analysis
DCarrier rockets face complex and harsh mechanical environments during flight,with the most severe a-coustic vibrations caused by the transonic segment.Therefore,accurately predicting the acoustic and vibration environ-ment of transonic rockets is one of the important foundations for successful rocket development.Noise test is an effec-tive method to accurately predict the sound and vibration environment of carrier rocket,but it is not conducive to ex-pose the potential mechanical risks in the early stage of development.For this reason,the study applied the virtual sta-tistical energy method to the sound and vibration environment prediction of carrier rocket.By comparing the experi-mental results of a carrier rocket cabin noise test with the simulation prediction results of the virtual statistical energy method,it was proved that the virtual statistical energy method could realize the acoustic environment prediction of carrier rocket in the full frequency domain.
Statistical energy analysisCarrier rocketNoise testEnvironmental prediction
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