Abstract: Firstly, the model of flight dynamics of towed target system is simplified, and the fundamental principle of digital simulation in flight dynamics of towed target system is elaborated. Secondly, a linear processing is taken in model for defining the relation between lift force and rudder wing angle, changes in both tension and height, as well as the corresponding damping factor to vertical speed. Thereby, the linear differential equations are established and the transfer function in vertical motion of towed target with vertical height, speed and rudder wing angle is solved. Finally, full digital simulation study is taken in the working procedure of towed target system under different oceanic condition, different deviation of acceleration and height. The research result will contribute to the design and application study of towed target system.

Key words: ⁺Towed target system, Flight dynamics, Digital simulation