部分切口杆状发射药内弹道性能的数值模拟
|
摘要
为了研究部分切口杆状发射药的装药内弹道性能,基于经典内弹道理论建立了部分切口杆状发射药的装药内弹道计算模型,采用高能硝胺发射药配方的部分切口杆状发射药进行了装药内弹道性能计算,在30 mm火炮上进行了试验验证,并分析了切距、切宽及切深对部分切口杆状发射药内弹道性能的影响。研究结果表明:采用建立的部分切口杆状发射药内弹道模型计算获得的最大膛压为430.2 MPa,与试验测试的最大膛压平均值409.7 MPa的计算误差为5.0%;计算的炮口初速为1378.2 m·s~(-1),与试验测试的炮口初速平均值1409.6 m·s~(-1)的计算误差为2.2%;最大膛压和炮口初速随切距的增大而减小,切距从5 mm增加至50 mm,最大膛压降低了12.0%,初速降低了3.1%,且在切距值大于20 mm后对膛压及初速的影响逐渐降低;最大膛压及炮口初速随切深和切宽数值的增加而增大,切深对最大膛压的影响相较对炮口初速的影响更为显著,切宽数值的变化对内弹道性能的影响总体较小。
To study the interior ballistic performance of charge for partially cut multi-perforated stick propellant,a interior ballis-tic simulation model of charge for partially cut multi-perforated stick propellant was established based on the classical interior ballistic theory. The calculation of interior ballistic performance of charge was performed using the partially cut multi-perforated stick propellant with high energy nitramine propellant formulations. The experimental validation were carried out on 30 mm artil-lery. The effect of incision intervals,incision web and incision depth on the interior ballistic performance of partially cut multi-perforated stick propellant was analyzed. The results show that the maximum bore pressure calculated by the established in-terior ballistic model of partially cut multi-perforated stick propellant is 430.2 MPa. The calculated error of the maximum bore pressure is 5.0% compared with average value of testing maximum bore pressure of 409.7 MPa. The calculated muzzle velocity is 1378.2 m·s~(-1),and the calculated error is 2.2% compared with average value of testing muzzle velocity of 1409.6 m·s~(-1). The maximum bore pressure and muzzle velocity decrease with the increase of incision intervals. When the incision intervals in-crease from 5 mm to 50 mm,the maximum bore pressure reduces by 12.0%. And the muzzle velocity reduces by 3.1%. The ef-fect upon the interior ballistic performance is gradually reduced when the numerical value of incision intervals is greater than 20 mm. The value of maximum bore pressure and muzzle velocity increases with the increase of incision depth and incision web. The effect of incision depth upon the maximum bore pressure is more significant than that upon the muzzle velocity. The in-terior ballistic performance of the propellant is insensitive to the change of incision web 's value.
To study the interior ballistic performance of charge for partially cut multi-perforated stick propellant,a interior ballis-tic simulation model of charge for partially cut multi-perforated stick propellant was established based on the classical interior ballistic theory. The calculation of interior ballistic performance of charge was performed using the partially cut multi-perforated stick propellant with high energy nitramine propellant formulations. The experimental validation were carried out on 30 mm artil-lery. The effect of incision intervals,incision web and incision depth on the interior ballistic performance of partially cut multi-perforated stick propellant was analyzed. The results show that the maximum bore pressure calculated by the established in-terior ballistic model of partially cut multi-perforated stick propellant is 430.2 MPa. The calculated error of the maximum bore pressure is 5.0% compared with average value of testing maximum bore pressure of 409.7 MPa. The calculated muzzle velocity is 1378.2 m·s~(-1),and the calculated error is 2.2% compared with average value of testing muzzle velocity of 1409.6 m·s~(-1). The maximum bore pressure and muzzle velocity decrease with the increase of incision intervals. When the incision intervals in-crease from 5 mm to 50 mm,the maximum bore pressure reduces by 12.0%. And the muzzle velocity reduces by 3.1%. The ef-fect upon the interior ballistic performance is gradually reduced when the numerical value of incision intervals is greater than 20 mm. The value of maximum bore pressure and muzzle velocity increases with the increase of incision depth and incision web. The effect of incision depth upon the maximum bore pressure is more significant than that upon the muzzle velocity. The in-terior ballistic performance of the propellant is insensitive to the change of incision web 's value.
引文
[1]王泽山,何卫东,徐复铭.火药装药设计原理与技术[M].北京:北京理工大学出版社,2006:219-221.WANG Ze-shan,HE Wei-dong,XU Fu-ming. The principle and technique for propellant charging design[M].Beijing:Bei-jing Institute of Technology Press,2006:219-221.
[2]唐乾森,肖正刚.窄通道杆状发射药内孔燃气流动数值模拟[J].火炸药学报,2016,39(5):93-98.TANG Qian-sen,XIAO Zheng-gang. Numerical simulation of combustion gas flow inside perforations of stick gun propellant with narrow channels[J]. Chinese Journal of Explosives&Pro-pellants,2016,39(5):93-98.
[3]徐汉涛,肖正刚,何卫东.部分切口多孔杆状发射药的燃烧性能[J].含能材料,2014,22(2):251-255.XU Han-tao,XIAO Zheng-gang,HE Wei-dong. Combustion characteristics of partially cut multiperforated stick propellant[J]. Chinese Journal of Energetic Materials(Hanneng Cailiao),2014,22(2):251-255.
[4] Carl R R,Frederick W R,Thomas C M,et al. A new high pro-gressivity/high-density propulsion concept:partially cut multi-perforated stick propellat[R]. AD-A234255,1991.
[5] XIAO Zheng-gang,XU Han-tao,HE Wei-dong. Influence of venting parameters on erosive burning of partially cut multi-perforated stick propellants[J]. Science and Technology of Energetic Materials,2015,76(1-2):42-46.
[6]王艳宾.多孔切口杆状发射药燃烧性能研究[D].南京:南京理工大学,2008.WANG Yan-bin. Burning performance of partially cut multiper-forated stick propellant[D]. Nanjing:Nanjing University of Science and Technology,2008.
[7]王锋,李梓超,刘国涛,等.多孔环切杆状发射药的燃烧性能[J].火炸药学报,2015,38(2):89-92.WANG Feng,LI Zi-chao,LIU Guo-tao,et al. Combustion per-formances of multiperforated curve cut stick gun propellants[J]. Chinese Journal of Explosives&Propellants,2015,38(2):89-92.
[8]许涛.部分切口杆状药、包覆药及其混合装药渐增性燃烧性能研究[D].南京:南京理工大学,2016.XU Tao. Progressive combustion performance study of partial-ly cut stick propellants,coated granular propellants and their mixed charge[D]. Nanjing:Nanjing University of Science and Technology,2016.
[9] XU Tao,TANG Qian-sen,HE Wei-dong,et al. Progressive combustion of partially cut stick propellants and its mixed charge with granular coated propellant in closed vessel with high loading density[J]. 2015 International Autumn Seminar On Propellants,Explosives and Pyrotechnics,2015.
[10]翁春生,王浩.计算内弹道学[M].北京:国防工业出版社,2006:2-15.WENG Chun-sheng,WANG Hao. Computational interior bal-listics[M]. Beijing:National Defense Industry Press,2006:2-15.
[11]金志明.枪炮内弹道学[M].北京:北京理工大学出版社,2004:42-44.JIN Zhi-ming. Gun interior ballistics[M]. Beijing:Beijing Insti-tute of Technology Press,2004:42-44.
[2]唐乾森,肖正刚.窄通道杆状发射药内孔燃气流动数值模拟[J].火炸药学报,2016,39(5):93-98.TANG Qian-sen,XIAO Zheng-gang. Numerical simulation of combustion gas flow inside perforations of stick gun propellant with narrow channels[J]. Chinese Journal of Explosives&Pro-pellants,2016,39(5):93-98.
[3]徐汉涛,肖正刚,何卫东.部分切口多孔杆状发射药的燃烧性能[J].含能材料,2014,22(2):251-255.XU Han-tao,XIAO Zheng-gang,HE Wei-dong. Combustion characteristics of partially cut multiperforated stick propellant[J]. Chinese Journal of Energetic Materials(Hanneng Cailiao),2014,22(2):251-255.
[4] Carl R R,Frederick W R,Thomas C M,et al. A new high pro-gressivity/high-density propulsion concept:partially cut multi-perforated stick propellat[R]. AD-A234255,1991.
[5] XIAO Zheng-gang,XU Han-tao,HE Wei-dong. Influence of venting parameters on erosive burning of partially cut multi-perforated stick propellants[J]. Science and Technology of Energetic Materials,2015,76(1-2):42-46.
[6]王艳宾.多孔切口杆状发射药燃烧性能研究[D].南京:南京理工大学,2008.WANG Yan-bin. Burning performance of partially cut multiper-forated stick propellant[D]. Nanjing:Nanjing University of Science and Technology,2008.
[7]王锋,李梓超,刘国涛,等.多孔环切杆状发射药的燃烧性能[J].火炸药学报,2015,38(2):89-92.WANG Feng,LI Zi-chao,LIU Guo-tao,et al. Combustion per-formances of multiperforated curve cut stick gun propellants[J]. Chinese Journal of Explosives&Propellants,2015,38(2):89-92.
[8]许涛.部分切口杆状药、包覆药及其混合装药渐增性燃烧性能研究[D].南京:南京理工大学,2016.XU Tao. Progressive combustion performance study of partial-ly cut stick propellants,coated granular propellants and their mixed charge[D]. Nanjing:Nanjing University of Science and Technology,2016.
[9] XU Tao,TANG Qian-sen,HE Wei-dong,et al. Progressive combustion of partially cut stick propellants and its mixed charge with granular coated propellant in closed vessel with high loading density[J]. 2015 International Autumn Seminar On Propellants,Explosives and Pyrotechnics,2015.
[10]翁春生,王浩.计算内弹道学[M].北京:国防工业出版社,2006:2-15.WENG Chun-sheng,WANG Hao. Computational interior bal-listics[M]. Beijing:National Defense Industry Press,2006:2-15.
[11]金志明.枪炮内弹道学[M].北京:北京理工大学出版社,2004:42-44.JIN Zhi-ming. Gun interior ballistics[M]. Beijing:Beijing Insti-tute of Technology Press,2004:42-44.