利用球形气泡模型研究导弹水下点火瞬间的推力状况  

Study on the working thrust for the missile launching under water using the spherical bubble model

作　　者：张有为[1] 王晓宏[1] 杨举贤[2] 

机构地区：[1]中国科学技术大学热科学和能源工程系,安徽合肥230026 [2]中国航天科工集团六院四十一所,呼和浩特010010

出　　处：《水动力学研究与进展（A辑）》2005年第5期636-640,共5页Chinese Journal of Hydrodynamics

摘　　要：本文利用由球形气泡假设所得到的简单数学模型研究了导弹在水下点火瞬间所受到的推力状况。计算结果显示由于水的惯性作用,导弹在水下点火瞬间所受到的推力将急剧增大,推力峰值随着喷管喉部截面积和膨胀面积比的增大而增大,而随着导弹发射深度的增大而减小,导弹所受到的推力在峰值后将出现低频波动。With a simple model that we proposed in 2001, in this paper, it is shown that the thrust for the missile launching under water has a big jump at the instant of the ignition due to the inertia of water. The thrust peak will increase when throat area A, increases, or the ratio of exit to throat areas Ab/At increses, or the submerged depth of missile in water decreases. After the occurrence of the pulse, the thrust will oscillate around the pneumatic thrust.

关 键 词：导弹 水下点火 气-水耦合 喷管 推力 

分 类 号：V430[航空宇航科学与技术—航空宇航推进理论与工程] V553.13