High Thermal Performance Requirements, The Thermal Design and Analysis for the German “RÖNTGENSATELLIT” 831146

The German X-ray satellite ‘RÖNTGENSATELLIT’ belongs to a new concept of large astrophysics facilities which includes: ○ a big four-nested Wolters Telescope ○ two improved X-ray Detectors and a High Resolution Imager and ○ a Wide Field Camera.The high optical performance requirements demand lowest thermal distortion properties. Furthermore, the rigid solar generators impose limitations for power availability. The presentation deals with the very demanding image stability requirements and the resulting active heater system, the thermal optical baffle in combination with the high insulation concept. First results will be demonstrated by Phase B analysis.


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