Experimental Study on Reducing the Pressure Wave of Gun Propelling Charge with High Loading Density
XIAO Zheng gang, YANG Dong, YING San jiu, SHI Jie, GAO Yao lin, XU Fu ming (Nanjing University of Science and Technology, Nanjing 210094, China)
Two ignition methods are investigated to reduce pressure wave in large caliber gun propelling charge with high loading density. The first is adding crosswise igniter and upper ignition bag on the base of standard igniter, the second is using the low velocity detonation igniter instead of the standard igniter, at the same time adding the crosswise igniter. The firing test results of propelling charge with high loading density show that both of the two methods could met the request of ignition. Comparing with the standard igniter, the first ignition method could ignite the charge simultaneously and entirely, but the pressure wave phenomena in barrel is serious. The flame spreading velocity of the second ignition method is faster than of the first ignition method, and the ignition pressure could be established quickly, the ignition delay time of propelling charge is short. First of all, the pressure wave can be restrained. The frequency spectral analyses show that the second ignition method could weaken and restrain the high frequency vibration, improve the characteristic of vibration in high loading density charge.
【CateGory Index】： TJ301