Abstract: In order to solve the problems of the ignition delay control and the energy release stability of traveling charge, a new traveling charge scheme is presented. The validity of time delay unit, stability of energy release and burning rate of traveling charge are studied by the closed bomb and 30 mm gun test. The results show that the ignition delay time of traveling charge can be controlled by the time delay unit based on its high density. There is an appropriate thickness of time delay unit, which can obtain an optimum effect of traveling charge, when the main charge remains constant. The experimental results are basically stable, which preliminarily verified the structural reliability of traveling charge, basic stable combustion performance and favorable energy release rule. The traveling charge has higher burning rate and gas release rate. When the content of porous propellant 125 charge is 95%, the maximum burning rate of traveling charge is 46 times as fast as 6/7 propellant, and the maximum dynamic vivacity reaches 7.4 MPa^-1 · s^-1. The burning rate and gas release rate of traveling charge can be adjusted by changing the content of porous propellant 125 charge.

Key words: ordnance science and technology, traveling charge, combustion performance, ignition delay, internal ballistic performance, muzzle velocity increment