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针对月球背面着陆器过渡轨道的选择问题,选择南极艾德肯盆地SPA作为登陆位置,设计了月球正面远月点100km高程,背面SPA为近月点10km高程的椭圆型过渡轨道,利用动力学方法和月球高阶重力场模型GRGM660PRIM,对该轨道进行了仿真分析.结果表明,着陆器的在轨时间接近7d,其中近月点在SPA中心平坦区域的时间超过3d.较长的在轨时间有利于后续着陆决策操作的准备,说明该设计的初始轨道根数具有一定的实际意义,可为着陆器的成功登陆提供一定程度的参考.
In view of the choice of lunar orbit lunar orbit transitional trajectory, SPA of Antarctica is chosen as the landing position. The elevation of lunar lunar surface is 100km. The back surface SPA is elliptical transitional trajectory of 10km elevation in recent months. By using dynamic method And the lunar high-gravitational field model GRGM660PRIM, the orbit was simulated and the results showed that the on-orbit of the lander was close to 7 days, of which the nearest point was in the flat area of the SPA center for more than 3 days. Which is conducive to the preparation of subsequent landing decision-making operations. It is of some practical significance to explain the initial orbital root number of the design and provide a reference for the successful landing of the lander.