Solid-liquid rocket equipment longitudinal sine condition design method based on time sequence analysis

The invention discloses a solid-liquid rocket equipment longitudinal sine condition design method based on time sequence analysis. The method comprises the steps that a vibration response time-domain curve of the joint of a gimbal seat or a rack on an engine and a cabin section during ground test of the liquid engine and a vibration response time-domain curve of a rear skirt of a solid engine during ground test of the solid engine are obtained; preprocessing the two obtained vibration response time domain curves to obtain first and second shock response spectrum equivalent sine data; enveloping the equivalent sine data of the first impact response spectrum and the second impact response spectrum; according to the longitudinal transfer characteristics, obtaining the acceptance level longitudinal sinusoidal vibration test magnitude of instruments and equipment on other cabin sections of the solid-liquid binding carrier rocket; and based on the safety coefficient T, obtaining the identification-grade longitudina