مرآة سطح ثانوية من نوع الزجاج SPACE (SPACE OSR)

The glass type secondary surface mirror(OSR)has been widely used in various satellites such as navigation,communication and remote sensing in China since its teechnical appraisal in 1989 and successful flight test in 1990.

Main technical indicators：

Size specifications(mm)

lengthxwidth(mm)：40x40 (20)

thickness(mm)：0.15

Solar absorption rate（α_s）：a_s≤0.10

Hemispherical emissivity(٤ε_h)：ε_h≥0.80

surface resistance(KΩ):≤20

Environmental adapptability indicators：

Humid-thermal aging： Humidity 50±2,relative humidity 95%±5%,72 hours

Film adhesion：Satisfy the 2-4N/cm tensiile test

Temperature cycling ：-1960~+150，100 times

Vacuum ultraviolet irradiation：8000ESH

Vacuum electron irradiation：50KeV,Total injection volume 2x1016e/cm²

Vacuum proton irradiation：50KeV, Total injection volume 2x101p/cm²

Storage conditions and duration

At normal indoor temperatuure and relative humidity not exceeding 55%,and stored in unopened and sealed packaging containers.the product has a storage period off 24 months from the date of shipment.