摘要
研究导弹出筒弹道和姿态优化问题,针对潜射导弹出筒过程所受水动力直接影响导弹的结构载荷和水下弹道,使出筒姿态受到影响。根据势流理论和拉格朗日力学原理,为保证发射的有效精度,提出了潜射导弹出筒过程的模型和水动力计算方法。应用赫斯-史密斯方法,计算了出筒过程的潜射导弹时变附加质量;应用在克希霍夫方程的基础上推导的包含时变附加质量系数的潜射导弹六自由度运动水动力方程组计算了出筒过程水动力。水动力算例结果表明所建立的模型和计算方法可行,可为潜射导弹发射提供研究参考和依据。
Structural loads and hydro-ballistic trajectory of an underwater missile are directly affected by hydrody namic force when it is emerging from a submarine. A model and a computation method have been put forward, based on potential flow theory and Lagrange dynamics for the emerging process. The time-dependent added masses on the emerging missiles have been calculated, using Hess-Smith method. Kinematic equations for six degree-of-freedom submarinelaunched missiles extended from the Kirchhoff equations, including the effects of timedependent added masses, have been used to obtain hydrodynamic solutions. The model and method are validated by numerical exampies, offering references and bases for researches of missiles emerging from a submarine.
出处
《计算机仿真》
CSCD
北大核心
2011年第9期86-89,共4页
Computer Simulation
