摘要
为了模拟水空跨越航行器的出水过程并研究其密度对出水过程的影响,结合理想流体与粘性流体对航行器的作用,考虑出水过程中浮力、浮心等物理量的变化以及附加质量的变化率,建立了圆柱航行器斜出水动力学模型,计算了不同密度航行器成功出水的临界速度和临界推力。最后分析得到了航行器密度和出水临界速度与临界推力之间的关系。
In order to simulate the water-exit process of vehicle,and study the effect of vehicle＇s density on the process when vehicle is exiting water. Combining with the ideal fluid and viscous fluid effects on aircraft,the dynamics model for cylinder vehicle＇s water-exit was established. In the process of vehicle＇s water-exit,the variation of physical factors like buoyancy,center of buoyancy etc were considered while. The critical velocity and thrust that make vehicle successful to exit water were calculated respectively under different density. At last,the relationships between vehicle＇s density and critical velocity and thrust were obtained respectively.
出处
《飞行力学》
CSCD
北大核心
2015年第5期460-463,共4页
Flight Dynamics
关键词
密度
动力学模型
出水
临界速度
临界推力
density
dynamics model
water-exit
critical velocity
critical thrust
