Development & research on performance test rig for cylindrical coil springs used on locos and cars;
机车车辆高圆弹簧性能试验台的开发与研究
Based on the virtual target point and the ellipse trajectory theory,a new maneuver method in the free- flight phase is presented.
基于虚拟目标点和椭圆弹道理论,提出了一种在自由段机动变轨的新方法。
In order to compute the TBM (Tactical Ballistic Missile) s RCS (Radar Cross-Section) in midcourse, based on the TBM s kinematic characters of midcourse, the trajectory was simulated by using the ellipse trajectory theory.
为计算弹道导弹被动段的雷达截面积,根据其被动段飞行的运动学特性,利用椭圆弹道理论仿真计算出了导弹被动段飞行弹道,同时在大地直角坐标系中通过解算雷达、导弹与地心的空间几何关系,求得导弹的实时视角值。
A novel semi-analytical method of solving acoustic scattering problems for non-circular elastic rings;
求解水下非圆弹性环声散射问题的一种半解析方法