CAJ | 학술논문

身管开孔泄气可以有效地调节弹丸初速实现变威力发射，身管开孔后通常加装气室装置对火药气体进行密闭或者通过气室装置引导火药气体排入大气。针对气室装置结构的不同，根据经典内弹道理论及气体动力学原理，建立了变威力发射过程的数学模型，通过数值仿真分析比较了两种不同变威力发射方案调速效果，得出了不同泄气孔面积对气室压力的影响规律，并研究了气室孔面积大小对初速的影响，研究结果对外置气室装置式变威力发射武器研制具有重要的指导意义。
신관개공설기가이유효지조절탄환초속실현변위력발사，신관개공후통상가장기실장치대화약기체진행밀폐혹자통과기실장치인도화약기체배입대기。침대기실장치결구적불동，근거경전내탄도이론급기체동역학원리，건립료변위력발사과정적수학모형，통과수치방진분석비교료량충불동변위력발사방안조속효과，득출료불동설기공면적대기실압력적영향규률，병연구료기실공면적대소대초속적영향，연구결과대외치기실장치식변위력발사무기연제구유중요적지도의의。
Venting on barrel is an effective way to adjust the muzzle velocity and conduct variable power launching. A gas chamber device is usual y instal ed on the barrel to seal propel ant gas or guide the gas exhausting into the atmophere. For different structures of the chamber device, according to the classic interior bal istics theory and gas dynamics, a mathmatical model of the interior bal is-tics is established to describe the process of variable power launching. The effect of adjusting the muzzle velocity of two different vari-able power launching schemes is analyzed and compared, the influence rules of different venting areas on the chamber pressure and the venting area of the gas chamer on muzzle velocity are studied. The results are of great significance to the development of the var-iable power weapons with external y mounted gas chamber device.