本文關鍵詞： 空間相機 反射鏡 輕量化 柔性支撐 環(huán)境適應性　出處：《光電工程》2016年05期 　論文類型：期刊論文

【摘要】：為了保證空間反射鏡具備優(yōu)良的力學和熱性能,在反射鏡結(jié)構設計階段對其進行結(jié)構尺寸穩(wěn)定性分析至關重要。設計了某1 200 mm×450 mm口徑長條形空間反射鏡的輕量化結(jié)構,采用SiC材料制作反射鏡鏡坯,反射鏡背部開三角形輕量化孔,提出一種背部3點柔性支撐方案,并設計了反射鏡的支撐結(jié)構。通過對反射鏡及其支撐結(jié)構在重力載荷和溫度載荷工況下的變形分析,擬合出反射鏡面的面形PV值、RMS值以及鏡面的傾斜量,并依此作為修改設計方案的依據(jù)。分析結(jié)果表明,在X向重力作用下反射鏡面形PV為51.9 nm,RMS為9.2 nm,反射鏡繞Z軸傾角為2.9″;4℃均勻溫升載荷作用下,反射鏡面形PV為69.8 nm,RMS為12.4 nm;反射鏡組件的基頻為173 Hz,能夠滿足空間應用要求。
[Abstract]:In order to ensure the excellent mechanical and thermal properties of the space mirror, it is very important to analyze the dimensional stability of the mirror during the structural design stage. The lightweight structure of a 1 200 mm 脳 450 mm long strip space mirror is designed. A three-point flexible support scheme for the back of the mirror is proposed, which is made of SiC material and has triangular lightweight holes in the back of the mirror. By analyzing the deformation of the mirror and its supporting structure under the condition of gravity load and temperature load, the surface PV value and RMS value of the mirror surface and the slope value of the mirror surface are fitted. The analysis results show that under the action of X-direction gravity, the reflection mirror shape PV is 51.9 nm RMS is 9.2 nm, and the mirror inclination angle is 2.9 "4 鈩，

本文編號：1535411