Abstract: In order to reduce the erection time and the installed power of vehicle borne missile launcher, a rapid erection scheme was proposed based on gas-squeezer auxiliary power source. A mathematical model of the erection progress was presented to couple the mechanical, fuel gas and fluidic equations. The interior ballistics equation of gas generator was solved by Matlab/Simulink, and the simulation models of the squeezing tank,the hydraulic components and the mechanical device were built in AMESim. A prototype test of the gas generation device was carried out, to validate the co-simulation model. Based on the simulation results, the gas-squeezer system was compared with traditional pump-type system. The results show that the erection progress of the gas-squeezer system can be achieved within 34.5 s, shortened by 42.5%, and the installed power is only 11.6 kW, decreased by 38.9%. The new system can greatly increase the erection speed and reduce the system power.