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GEO衛(wèi)星熱控涂層αS 退化空間綜合環(huán)境模擬試驗(yàn)

Space Combined Environment Simulation Test on αS Degradation of GEO Satellite Thermal Control Coatings

  • 摘要: 文章用綜合低能輻照試驗(yàn)?zāi)M15年地球同步軌道環(huán)境對(duì)熱控材料S781白漆、SR107-ZK白漆、鍍銀FEP、OSR片的太陽(yáng)吸收率退化趨勢(shì)。有機(jī)白漆有嚴(yán)重退化，而OSR和 鍍銀FEP材料退化較少。通過與飛行試驗(yàn)結(jié)果比較，證明了本次模擬試驗(yàn)的有效性。通過利用退化趨勢(shì)的試驗(yàn)數(shù)據(jù)，應(yīng)用最小二乘法獲得退化數(shù)學(xué)模型。二次指數(shù)退化模型與4種材料退化曲線符合較好。更長(zhǎng)試驗(yàn)時(shí)間結(jié)果可以通過數(shù)學(xué)模型外推的方法獲得。經(jīng)試驗(yàn)驗(yàn)證，用8年試驗(yàn)數(shù)據(jù)外推15年數(shù)據(jù)誤差不超過1%。

     

    Abstract: GEO environmental degradation trend of 15years on solar absorptance for thermal control coatings such as S781 white paint, SR107-ZK white paint, silvered FEP, and OSR on the outer satellite are simulated by a combined low energy irradiation test. Severe degradation is found in organic white paint while OSR and silvered FEP remain quite stable. By comparison with flight test results, the effectiveness of the simulation method is shown. Based on the degradation trend data, the least squares regression method is used to obtain empirical formulas. The second order exponential decaying formulas are found quite good to fit degradation curves of four kinds of materials. Extrapolation for a longer test time is made and the results are verified. The error of using 8 years test results to extrapolate 15 year degradation is shown to be less than 1% .

     

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