Abstract: Based on the discrete time transfer matrix method(DTTMM), a dynamic model for a parachute-submissile system in the terminal descent phase is developed, thus avoiding the questions of multi-body dynamics based on traditional methods. The modeling process of a parachute-submissile system in the vertical plane is illuminated by adopting the DTTMM in detail and the transfer matrix and the transfer equation are deduced. Through an example, the validity of the model and the feasibility of DTTMM used in the deceleration parachute-submissile system are verified by comparing the parachute-submissile dynamic models based on the DTTMM and the Newton-Euler method.

Key words: Parachute, Discrete time transfer matrix method, Multi-body dynamics, Flight dynamics