膛内弹上高压气室充气模型  

The Model of Quasi-steady Flow for the Storage Chamber Through Tapered Tube

作　　者：方清[1] 赵国志[1] 沈培辉[1] 韩永要[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《弹箭与制导学报》2005年第S4期370-372,376,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：在气流准定常假设条件下,建立了高压弹底火药气体通过渐缩喷管向弹体内气室流动的气体参数理论计算模型。理论模型与实验数据有良好一致性。理论研究表明,在发射过程中,膛内弹上气室压力能够达到弹底最大压力值,气室终止压力也存在最大值。气室工作压力可以在不大于弹底压力范围内改变。The strong pressure gas from the powder pass a tapered tube and flow into a storage chamber on the projec- tile.On the hypothesis of quasi-steady flow.a model of gas parameters for the storage chamber is established.The a- greement between calculations and tests are fairly good.Analysis of the gas pressure in the storage chamber shows that the value of chamber's pressure may reach a maximum of gas pressure in projectile base and the value of chamber's re- sidual pressure exist a maximum.

关 键 词：准定常流 喷管 气室参数 伸缩双弹芯 

分 类 号：TJ012.1[兵器科学与技术—兵器发射理论与技术]