﻿ 舰炮身管长度的确定方法
 舰船科学技术  2022, Vol. 44 Issue (23): 185-189    DOI: 10.3404/j.issn.1672-7649.2022.23.039 PDF

The determination method on the barrel length of naval gun
LI Xiang, PENG Song-jiang, WANG Lin-lin
The 713 Research Institute of CSSC, Zhengzhou 450015, China
Abstract: From the mission of naval gun , studied on the method for determination of barrel length when the original design without prototype reference, can through the mission analysis, exterior ballistic calculation, charging design, interior ballistic calculation can initially determine the length of the gun, through optimization design, and comprehensive balance compatible variety of ammunition capacity, barrel stiffness, the burning ofgunpowder, muzzle pressure and barrel life, reasonably determine the length of the gun.In the modification design, if important tactical and technical indicators such as firing type and maximum range change or major technical improvement in the launch charge, the method to determine the barrellengthis illustrated with a certain naval gun as an example.It has a reference role in the demonstration of naval gun barrel length and barrel design in our country.
Key words: naval gun     barrel     exterior ballistic     interior ballistic     charging design
0 引　言

1 舰炮原始设计时身管长度的确定方法

 图 1 舰炮原始设计时确定身管长度流程图 Fig. 1 Flow chart for determining barrel length during the original design of the naval gun
1.1 初始条件

1.2 外弹道设计

 ${\rm{d}}X = \frac{{\partial X}}{{\partial C}}{\rm{d}}C + \frac{{\partial X}}{{\partial {v_g}}}{\rm{d}}{v_g} + \frac{{\partial X}}{{\partial {\theta _0}}}{\rm{d}}{\theta _0}。$ (1)

1.3 内弹道设计

1）装药弹道设计

 $v_g=v（y_1\text{，}y_2\text{，}y_3\text{，}y_4\text{，}\cdots\cdots）。$ (2)

 $E_1=mv^2/2，$ (3)

 $E\approx 3E_1。$ (4)

 $\gamma_g=(k-1)\frac{\dfrac{1}{2}mv^2_g}{f\omega}。$ (5)

2）内弹道设计

 $l_g=f\left(p_m,v_g,\Delta,\frac{\omega}{m}\right) ，$ (6)

 $v_g=\sqrt{\frac{2S}{\varphi m}\int^{l_g}_0 p{\rm{d}}l}。$ (7)

$\displaystyle \int^{l_g}_0p{\rm{d}}l$ 就是p-l曲线（内弹道正面问题可以解出，见图2）下面的面积，也就是火药气体做功的大小。由式（7）可以看出，在给定初速vg的情况下，不同的内膛构造参数，就可以给出各种不同的 $\displaystyle \int^{l_g}_0p{\rm{d}}l$ ；即使相同的 $\displaystyle\int^{l_g}_0p{\rm{d}}l$ 也因为p-l曲线的不同，得出多种不同的弹丸全行程长lg[3]，也就是说弹丸全行程长lg是多解的。因此弹丸全行程长lg的确定是一个反复权衡的过程。

 图 2 p-l曲线 Fig. 2 Curve of p-l

 $l_b=l_g+l_{V_0}。$ (8)
1.4 确定身管长度时需考虑的其他问题

1）兼容多种弹药能力

2）身管刚度

3）火药膛内燃尽性

4）炮口压力

5）身管寿命

2 舰炮改进设计时身管长度的确定方法

 图 3 54 d身管的变形云图（最大变形量9.498 mm） Fig. 3 54 d barrel length,without support, picture of deformation (max deformation 9.498 mm)

 图 4 62d身管的变形云图（最大变形量18.885 mm） Fig. 4 62d barrel length,without support, picture of deformation (max deformation 18.885 mm)

 图 5 54d身管长度、带支撑时身管的变形云图（最大变形量5.116 mm） Fig. 5 54d barrel length,with support, picture ofdeformation (max deformation 5.116 mm)

 图 6 62d身管长度、带与54d身管长度相同支撑时身管的变形云图（最大变形量11.014 mm） Fig. 6 62d barrel length,with support same as 54 d, picture ofdeformation (max deformation 11.014 mm)

 图 7 62d 身管长度、带加长 200 mm支撑时的变形云图（最大变形量 10.546 mm） Fig. 7 62d barrel length,with support extend to 200 mm, picture of deformation (max deformation 10.546 mm)

 图 8 62d 身管长度、带加长 500 mm支撑时身管身管的变形云图（最大变形量 9.702 mm） Fig. 8 62d barrel length,with support extend to 500 mm, picture of deformation (max deformation 9.702 mm)

3 结　语

 [1] Jane's Weapons Naval[M]. 2018-2019. [2] 韩子鹏, 等. 弹箭外弹道学[M]. 北京: 北京理工大学出版社, 2014. [3] 张小兵. 枪炮内弹道学[M]. 北京: 北京理工大学出版社, 2014. [4] 王泽山, 何卫东, 徐复铭. 火炮发射装药设计原理与技术[M]. 北京: 北京理工大学出版社, 2014. [5] 张相炎, 郑建国, 袁人枢. 火炮设计理论[M]. 北京: 北京理工大学出版社, 2014. [6] 唐浩宇. PP87式82 mm迫击炮远程杀伤榴弹发射装药研究[D]. 南京: 南京理工大学, 2005. [7] 鲍密. 按序开裂杆状药在某制导炮弹内弹道中的应用研究[D]. 南京: 南京理工大学, 2013.