Abstract： The jet flow is one of influence factors on vibration, initial disturbance and firing dispersion of Multiple Launch Rocket System (MLRS). The analysis for influence of jet flow impact force on dynamic characteristics of MLRS will provide thought for improving firing dispersion. The launch dynamic model of MLRS is presented using transfer matrix method of multibody system, which considering the influence of jet flow on launcher. Considering the jet flow impact force, the dynamic equations for analyzing dynamic response of MLRS are developed and launch dynamic simulation system is established. The dynamic response, rocket motion pattern, initial disturbance and firing dispersion under different jet flow impact force are analyzed. The simulation results show that the jet flow impact force have some influence on dynamic response, rocket motion pattern, initial disturbance and firing dispersion, which support some thought for design of MLRS.
2012, Vol. 31 
