CAJ | 학술논문

为研究子母弹中心燃气式抛撒过程中推弹装置在由定容向变容阶段转换瞬间的受力状态对子弹最终抛速和姿态的影响，设计了中心燃气式抛撒定容阶段试验装置；建立了燃气发生器内的零维火药燃烧模型和推弹装置内定容流场的二维两相流模型。数值仿真结果与试验结果的对比分析验证了模型的可行性；分析了不同的燃气发生器小孔分布和几种扰流装置对推弹装置受力状态的影响，结果表明：改变小孔分布使边界所受合力矩呈振幅衰减的周期性振荡，造成子弹抛撒姿态的不确定性；不同类型、不同大小和位置的扰流机构对抛撒性能有重要影响。
위연구자모탄중심연기식포살과정중추탄장치재유정용향변용계단전환순간적수력상태대자탄최종포속화자태적영향，설계료중심연기식포살정용계단시험장치；건립료연기발생기내적령유화약연소모형화추탄장치내정용류장적이유량상류모형。수치방진결과여시험결과적대비분석험증료모형적가행성；분석료불동적연기발생기소공분포화궤충우류장치대추탄장치수력상태적영향，결과표명：개변소공분포사변계소수합력구정진폭쇠감적주기성진탕，조성자탄포살자태적불학정성；불동류형、불동대소화위치적우류궤구대포살성능유중요영향。
To study the effect of the stained condition of catridge pushing ej ector transforming from constant-volume stage to alteration-volume stage on the final velocity and attitude of submunition in the process of cluster bomb dispensing with center combustion gas,the test facilities of dispensing system with center combustion gas were designed.The zero-dimensional powder burning model in gas generator and two-dimensional two-phase flow model in cartridge pushing ej ector on constant-volume stage were developed.The models were proved by numerical simulation and test results.The effect of different gas-generator holes distribution and several spoiler devices on the stained condition of cartridge pushing ej ector was analyzed.While the distribution of holes is changed,the resultant moment acting on the boundary presents attenuate periodic vibration, which causes the uncertainty of dispensing attitude of submunition.The disturbed-flow devices with different types,sizes and position affect the dispensing performance significantly.