• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Measurement >Semi-empirical prediction of internal pressure distribution and muzzle velocity in the rifled barrel of a light weapon
【24h】

Semi-empirical prediction of internal pressure distribution and muzzle velocity in the rifled barrel of a light weapon

机译：轻武器步枪枪管内部压力分布和枪口速度的半经验预测

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

When a weapon is fired, pressure that dynamically changes behind the projectile/bullet and along the barrel and the projectile velocity are the most important internal ballistic parameters for barrel design. These facts require time consuming and expensive measurements, knowledgeable personnel and additional safety measures to properly study. In this work, shooting tests were conducted extensively for different projectile and gunpowder weights using NATO standard small caliber barrels of 7.62 mm and 5.56 mm in diameter. Internal pressure distributions and projectile velocities were measured as functions of time and displacement experimentally. Using the curve-fitting method, a projectile velocity profile was modeled according to a function defined as v(x) = ax(k)/(x(k)+b) and the barrel internal pressure was derived from the velocity profile. The coefficients a, b and k were determined empirically based on projectile and gunpowder weights. The model was validated for various barrel lengths using a custom-designed barrel. With the velocity function defined in this work, the internal pressure distributions and projectile velocities of 7.62 mm and 5.56 mm small caliber weapons were predicted within 90% of confidence without the need for time consuming and expensive measurements. (C) 2015 Elsevier Ltd. All rights reserved.
机译：发射武器时，在弹丸/子弹后面以及沿枪管动态变化的压力和弹丸速度是枪管设计最重要的内部弹道参数。这些事实需要耗时且昂贵的测量，知识渊博的人员以及适当研究的其他安全措施。在这项工作中，使用直径分别为7.62毫米和5.56毫米的北约标准小口径枪管，对不同的弹丸和火药重量进行了广泛的射击测试。实验测量了内部压力分布和弹丸速度与时间和位移的关系。使用曲线拟合方法，根据定义为v（x）= ax（k）/（x（k）+ b）的函数对弹丸速度分布进行建模，并从速度分布导出枪管内部压力。系数a，b和k根据弹丸和火药的重量经验确定。使用定制设计的枪管，该模型针对各种枪管长度进行了验证。利用这项工作中定义的速度函数，可以在90％的置信度内预测7.62毫米和5.56毫米小口径武器的内部压力分布和射弹速度，而无需耗时且昂贵的测量。 （C）2015 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号