论文部分内容阅读
对月球探测器的返回轨道进行建模与参数分析。基于双二体假设,在三维空间中建立返回轨道的数学模型;根据模型计算给出初步设计轨道的算例,并以此结果为初值,在已有高精度动力学模型下搜索计算,较快地得到了精确轨道参数;通过两条轨道参数的对比,证明文中初步设计解析方法的正确性;通过对模型进行仿真计算,得到落区位置等因素对近月点机动增速的重要影响。
The lunar probe’s return orbit is modeled and parameterized. Based on the double body hypothesis, the mathematical model of return orbit is established in three-dimensional space. The initial design trajectory is calculated according to the model. Based on the result, the initial value is calculated and compared with the existing high-accuracy dynamic model. The accurate orbit parameters are obtained quickly. The comparison between the two orbit parameters proves the correctness of the preliminary design and analysis method. By simulating the model, the influence of the position of the landing zone and other factors on the motor speed growth in recent months is obtained.