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Dynamics Simulation Analysis for Novel Lander Based on Two Kinds of Landing Mode

机译：基于两种着陆方式的新型着陆器动力学仿真分析

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A dynamic analysis model of the novel lander is created, and all possible landing conditions at touchdown are considered. Through analyzing the landing process of free-fall landing mode, some shortcomings are found. To improve the landing stability of the novel lander, low-speed landing mode is proposed, namely, the main engine and attitude control engines are switched off soon after the lander is in contact with the landing surface. However, engine thrusts cannot disappear at the exact time when the lander contacts with the landing surface. So the influence of engine thrust on landing stability must be taken into consideration in the construction of the lander's model. Eleven forces, one of which is the thrust of the main engine and others simulate attitude control engines, are applied to the main body of the lander to create the analysis model for the low-speed landing mode. After analyzing and comparing the landing process of free-fall landing mode and low-speed landing mode, the conclusion that the low-speed landing mode has the better landing stability is obtained.
机译：建立了新型着陆器的动态分析模型，并考虑了着陆时所有可能的着陆条件。通过分析自由落体着陆方式的着陆过程，发现了一些不足。为了提高新型着陆器的着陆稳定性，提出了低速着陆模式，即在着陆器与着陆面接触后立即关闭主机和姿态控制发动机。但是，当着陆器与着陆表面接触时，发动机推力不会在确切时间消失。因此，在着陆器模型的构建中必须考虑发动机推力对着陆稳定性的影响。将11种力（其中一种是主机的推力，另一种是模拟姿态控制引擎）施加到着陆器的主体上，以创建低速着陆模式的分析模型。通过对自由落体降落模式和低速降落模式的降落过程进行分析比较，得出低速降落模式具有较好的降落稳定性的结论。

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