多孔切口杆状发射药燃烧性能研究

【作者】 王艳宾；

【导师】 何卫东；

【作者基本信息】 南京理工大学 ， 材料学， 2010， 硕士

【摘要】 高装填密度装药是发射装药技术的重点发展方向之一。多孔发射药具有较高的燃烧渐增性,但装填密度较低。多孔杆状发射药兼有高装填密度和高燃烧渐增性的特点,但侵蚀燃烧较严重,限制了其应用。本文采用对多孔杆状发射药进行横向切口的方法解决其侵蚀燃烧问题。设计了用于实验样品制备的切口简易设备,并通过密闭爆发器实验和中止实验,研究了不同切口宽度、切口间距对多孔长杆状药燃烧性能的影响。研究结果表明：在本研究实验条件下,切口的宽度1mm,切口间距0.835cm的多孔切口杆状发射药的燃烧性能与长度为0.835cm(L／d0为25.57,L／D为1.17)的多孔发射药的燃烧性能相近。将这种多孔切口杆状发射药在装药时进行有序排列,必然可以提高装填密度,对多孔长杆状发射药的应用具有一定的实际应用价值。更多还原

【Abstract】 The propellant charge technology which has high loading density is a key direction in the area of propelling charge. The porous propellant has a better progressive combustibility, while its loading density is lower. The rod-shaped porous propellant has high loading density as well as good progressive combustibility, but its erosive burning is serious, which makes its application limited. This paper tries to deal with the problem of erosive burning by making some horizontal incision in the porous rod-like propellant. A special mold using for experiments was designed, and the rod-shaped porous propellant with different incision width and interval was made in this mold. The closed bomb test and the suspension of combustion were done for the further study of the erosion mechanism, and the combustion performance effect was studied by the factors of the length, incision width, spacing and other factors. The results show that: the porous propellant with incision whose width is 1mm, and the distance between the two immediate incision is 0.835cm, has a similar combustion performance with the porous propellant whose length is 0.835cm(L/do is 25.57, LID is 1.17)under this experiment conditions. If this propellant arranged orderly when it was charged, the loading density must be improved. So this study has some practical value in the application of long rod-shaped propellant.更多还原