分子污染光學(xué)效應(yīng)試驗(yàn)研究

Experimental study on optical effects of molecular contamination

摘要: 衛(wèi)星有機(jī)材料放氣產(chǎn)生的分子污染是衛(wèi)星在軌污染的重要來(lái)源,。分子污染會(huì)造成敏感表面光學(xué)性能退化甚至失效，因此必須進(jìn)行評(píng)估分析,。文章對(duì)在衛(wèi)星真空熱試驗(yàn)中,，采用光學(xué)試片進(jìn)行污染光學(xué)效應(yīng)測(cè)試的數(shù)據(jù)進(jìn)行了分析，并且與國(guó)內(nèi)外試驗(yàn)數(shù)據(jù)進(jìn)行了比對(duì),，發(fā)現(xiàn)光學(xué)試片測(cè)得的透過率損失數(shù)據(jù)較為保守,，分析原因是光學(xué)試片污染沉積為液滴狀，導(dǎo)致散射損失較大,。

Abstract: The molecular contamination produced by satellite organic materials is an important source of contamination in orbit. It can degradate optical performance and even lead to failure of sensitive surfaces, so its effects must be evaluated. In satellite thermal vacuum tests, optical specimen is used to monitor contamination effects. In this paper, we analyze the experimental data, compare them with those obtained by other authors. It is found that the transmission loss of the optical specimen is greater than nominal values. The possible explanation is that non-uniform contamination layer causes more scatter loss.