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扬起的月尘颗粒沉积在月球探测器的太阳电池表面,可导致其性能下降。文章基于层叠遮挡理论,建立了一种月尘遮蔽光线透射的理论模型,利用该模型开展了模拟月尘颗粒形状与粒径对遮蔽效果影响的分析和计算,并与NASA的同类模型进行了对比分析。分析结果显示:2种模型给出的相对透过率随沉积月尘面密度的变化趋势相同,均呈指数型衰减关系;在随月尘形状、粒径、透过率的变化方面,2种模型存在差异。利用月尘沉积与吸附试验装置实施了模拟月尘沉积试验,验证了所建立模型的正确性,其预测准确度优于NASA模型。
Rising moon dust particles deposited on the lunar surface of the solar cell detector, can lead to its performance degradation. Based on the theory of laminated shelter, this paper established a theoretical model of shading the light transmission by moon dust. The model was used to analyze and calculate the effect of the shape and particle size of moon dust on the shading effect. The comparison with the NASA model analysis. The results showed that the relative permeability of the two models showed the same decay relationship with the dust deposition density on the depositional month. Both of them showed exponential decay relationship with respect to the change of shape, particle size and transmittance The model is different. The monthly sediment deposition test was carried out by using the device of moon sediment deposition and adsorption. The correctness of the established model was verified, and its prediction accuracy was better than NASA model.