战斗机航迹可飞性过载检验算法

生成满足战斗机过载约束条件的三维航迹以及对航迹进行可飞性过载检验是战斗机航迹规划的重要内容。利用B样条曲线拟合战斗机航迹并计算航迹曲率,给出了航迹可飞性过载判断准则以及相应的保证措施,即降低速度与调整导航点。通过对某型战斗机按拟合航迹飞行的需用过载进行仿真并对航迹可飞性进行过载约束检验,有效地验证了调整导航点位置的两条可用原则:防撞优先与规避优先。该算法对于实现战斗机三维航迹规划生成以及航迹可飞性过载检验具有一定的实用价值。

Algorithm of Overloading Verification for Some Fighter's Trajectory

Creating a three-dimensional trajectory within the confine of fighter's overloading restriction and verifying the overloading to ensure the validity of whole trajectory are two important parts of trajectory planning.By making use of the B-Spline curved-fitting,a three-dimensional trajectory for the fighter was created,and the trajectory curvature was calculated.One overloading judgment rule was deduced,and also some corresponding measures were made: reducing the speed;adjusting some navigation points.The overloading of some fighter flying along the planning trajectory was simulated and verified,and two principles of adjusting navigation points to reduce the overloading were analyzed and validated: crashworthiness precedence;elusion precedence.The algorithm has a practical value to create the three-dimensional trajectory of some fighters and verify its overloading.