Effects ofmodulenumberand firing conditiononchargethermal safetyingunchamber

作     者：Huan-yu Qian Yong-gang Yu Jing Liu Huan-yu Qian;Yong-gang Yu;Jing Liu

作者机构：School of Energy and Power Engineering Nanjing University of Science and Technology Narjing 21094China Acudemny of Opto-ElectroricChina Electronis Technology Group Corporation(AOE CETC)Tianjin300308China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2022年第18卷第1期

页      面：27-37页

核心收录：

学科分类：082601[工学-武器系统与运用工程] 08[工学] 082603[工学-火炮、自动武器与弹药工程] 0826[工学-兵器科学与技术] 

主　　题：Thermal safety Modular charge Cook-off Firing condition 

摘      要：Thermal safety of modular charge which is fed into and retained in the chamber after gun fires consecutively is first investigated with cook-off method,A two-dimensional cook-off model of modular charge in gun chamber is established and the cook-off process of modular charge in gun chamber is numerically *** the effects of module number and firing condition on charge thermal safety are evaluated by researching the cook-off response characteristics of *** results show that under conditions of different module numbers the cook-off responses all occur on the module closest to the boundary of missile,and the single-base propellants located at the inner surface of cartridge ignite *** the number of loaded module changes from 1 to 6,the cook-off response temperatures vary little,only in a small range of 478.1 K-482.4 *** cook-off response times decrease logarithmically in the range of 211.25-166.7 s with the increasing length of residual air gap in gun *** simulation results are well matched with the experimental ***,different firing conditions have greatinfluence on the cook-off response time,minor influence on the initial response position and little in-fluence on the response *** the three conditions of consecutive 32 launches with 5 rounds/min,43 launches with 1 round/min,and 41 launches with different firing frequencies,the cook off response temperatures are 479.2 K,481.1 K and 479.9 K respectively and the response times are 709.25,211.2 s and 214.4 s *** response position is near the middle area of the inner cartridge surface in the former condition and near the right area in the latter two conditions.