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Close Sun-orbiting mirrors for beamed propulsion and space solarpower.
On 6/17/2017 10:48 AM, Sегgi о wrote:
The Parker probe will use a refrigeration system to lower the temperature of the components of the spacecraft from 1,400 C to room temperature. This is about the same temperature drop as the temperature drop from the Sun’s surface to the maximum temperature of our high temperature ceramics. So it should be possible to do this temperature drop on the surface of the Sun using our highest temperature ceramics. the major constraint is; the limited amount of heat can the probe get rid of by radiate it out into cold space on the back side. This is only a few hundred watts. (do the calculation) [hint http://hyperphysics.phy-astr.gsu.edu...mo/stefan.html ] this means the solar shield *must be* a wideband optical and heat reflector Don't you know that directing energy back into the sun could overload it and cause it to explode? This is science. |
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