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北京錦坤科技有限公司
主營(yíng)產(chǎn)品: 射頻光纖傳輸模塊-微波光纖傳輸模塊-RF over Fiber-微波光纖延遲線(xiàn)-雷達(dá)目標(biāo)模似器 |
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2012-12-6 閱讀(1924)
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譚進(jìn)國(guó)1,2,何欣1,付亮亮1
(1. 中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所,吉林長(zhǎng)春130033;
2. 中國(guó)科學(xué)院研究生院,北京100039)
摘要: 所述空間遙感器反射鏡的工作溫度為18±
關(guān)鍵詞: 中心支撐; 小型反射鏡; 柔性結(jié)構(gòu)
中圖分類(lèi)號(hào): TH122 文獻(xiàn)標(biāo)志碼: A 文章編號(hào): 1007-2276(2010)06-1070-05
Support technique in centre of minitype reflector
TAN Jin-guo1,2, HE Xin1, FU Liang-liang1
(1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China ;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China)
Abstract: The working temperature of space remote sensor reflector is 18 ±
the reflector in the complex working condition needs to meet the design requirements. The choices of the reflector materials and the supporting structure materials were introduced. The supporting way and the lightweight structure of the reflector and so on were discussed. According to the design principles of the flexible supporting structure of the reflector and using CAD/CAE engineering software for analysis and optimization, a kind of reflector flexible structure of centre support was designed by means of finite element method (FEM). Surface deformation less than λ /10 (PV) and λ /40 (RMS) (λ =632.8 nm)in this temperature range. Finally, the changes of reflector surface deformation and the dynamic characteristic of reflector component simulators were tested by the mechanical environment test. The conclusion is proved that the structure of the reflector meets the demand of the optical design.
Key words: Centre Support; Minitype reflector; Flexible structure
0 引言
隨著空間遙感事業(yè)的發(fā)展,空間遙感器的應(yīng)用越來(lái)越廣泛,同時(shí)也對(duì)遙感器的成像質(zhì)量提出更高的要
求。由于反射鏡的微小變形都會(huì)影響遙感器的成像質(zhì)量,因此,反射鏡的支撐技術(shù)成為研制空間光學(xué)遙感器的關(guān)鍵技術(shù)之一。由于反射鏡是成像系統(tǒng)的關(guān)鍵部件,它的精度與穩(wěn)定性直接影響成像質(zhì)量,因此,反射鏡的支撐技術(shù)成為工程應(yīng)用的關(guān)鍵技術(shù)之一。此文研究的反射鏡是某型號(hào)空間小型遙感器的主鏡。其外形尺寸為