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针对一种滚转稳定的固定翼双旋弹,对其非线性动力学进行了分岔特性分析,并在此基础上研究了各系统参数对其动力学分岔特性的影响。根据固定翼双旋弹非对称的特点,通过数值计算方法研究其飞行过程中平衡点随同向鸭翼安装角的变化规律,通过系统的分岔图得知系统具有三组稳定平衡点,其中只有一组平衡点为理想可行的稳定平衡点,因此需限定同向鸭翼安装角的范围以使固定翼双旋弹保持稳定飞行。在此基础上针对固定翼双旋弹弹道修正组件周期旋转和转角固定两种工作模式,通过各系统参数下的系统分岔图总结了固定翼双旋弹结构及气动力参数对其动力学系统分岔特性的影响。仿真结果表明,固定翼双旋弹的各气动力参数及飞行速度均对系统的分岔特性具有较大影响,应合理选定这些系统参数以使其具有良好的气动特性。
Aiming at a kind of roll-stable fixed-wing dual-coil projectile, the bifurcation characteristics of its nonlinear dynamics are analyzed. Based on this, the influences of various system parameters on its dynamic bifurcation characteristics are studied. According to the asymmetry characteristics of fixed-wing double-spinillear, the variation law of the equilibrium point along the same direction to the installation angle of the canard wing during flight is studied by means of numerical calculation. From the bifurcation diagram of the system, the system has three stable equilibrium points, of which only A set of balance points is a desirable stable equilibrium point. Therefore, it is necessary to limit the range of the installation angle of the canard wing to keep the fixed-wing dual-helical flight stable. On the basis of this, two kinds of working modes of fixed-wing double-helical-bouncing ballistic correction components, namely, periodic rotation and angle fixing, are summarized. The bifurcation diagram of the system with fixed-wing dual- Effect of bifurcation characteristics. The simulation results show that the aerodynamic parameters and flight velocities of the fixed-wing double-helical bounce have a great impact on the bifurcation characteristics of the system. These system parameters should be selected reasonably to make them have good aerodynamic characteristics.