Aerodynamic and dynamic characteristics of aeronautic towed decoy
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摘要: 航空拖曳式诱饵与被保护载机的相对空间位置及投放使用方法是诱饵能否成功干扰导弹的关键因素.针对传统有限段法的不足,提出改进的拖缆有限段法,将拖曳式诱饵的动态运动特性问题转变为拖曳线与拖曳飞机航迹轴系的夹角动态计算问题.通过分析拖曳飞机的速度矢量与拖曳线的几何关系,建立了拖曳式诱饵对拖曳载机的动态跟随模型.仿真计算了拖曳飞机机动飞行时,拖曳式诱饵的动态运动特性,结果证明算法简单有效,较好地模拟了其动态跟随特性.Abstract: The relative space position between aviation towed decoy and plane which is protected and release method of aviation towed decoy are the main factors that influence the result when missile is jammed by decoy. A new finite segment method was developed to make up the deficiencies of conventional finite segment method. Aerodynamic movement characteristics of aeronautic towed decoy were transformed to the question how to model and compute angles between tow and towing aircraft track coordinates. The geometry relationship between velocity vector of towing aircraft and tow was analyzed, so dynamic fallow models of tow and towing aircraft were established. The dynamic characteristics of towed decoy were calculated when towed aircraft does different flights. The result indicates that the arithmetic is simple, valid and better to simulate decoy-s dynamic characteristics.
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Key words:
- towed decoy /
- dynamic characteristics /
- aerodynamics /
- computer simulation
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