机载箔条弹投放方向研究

Research on Launching Direction of Airborne Chaff

为研究机载箔条的投放方向问题,分别建立了导弹、箔条云和飞机的运动模型,以及箔条云的反射截面积模型。从三者之间的瞬时空间位置关系出发,以质心干扰成功的条件作为约束,对机载箔条的投放过程进行建模仿真。根据具体的仿真条件得到满足导弹最终跟踪箔条云的投放方向,并在此基础上,仿真得到当导弹击中箔条云发生爆炸时,不同投放方向对应的弹机之间的距离,从中选择出较大的弹机距离对应的投放方向。这些投放方向的选取有利于箔条质心干扰取得成功,提高了机载箔条的干扰性能。

In order to study the problem of the launching direction of the airborne chaff. The motion models of missile, chaff cloud and plane are built, and chaff cloud＇s RCS model is built too. Under the con- straint condition of the centroid jamming being successful, the launching process of airborne chaff is modeled and simulated based on the relation of their positions. The launching directions which satisfy the condition of missile finally trailing the chaff cloud can be gotten according to specific simulation conditions. On the basis, the distances between missile and pane corresponding to different launching directions can he gotten through simulation when missile explodes after having attacked chaff cloud. The launching directions corresponding： to the longer distances between missile and plane are chosen, which are in favor of successful centroid jamming of airborne chaff and enhance its jamming effect.