"Sегgi о" wrote in message news
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On 6/20/2017 12:31 PM, Robert Clark wrote:
"Robert Clark" wrote in message news
At the distance of the Parker probe, a 1 km sq. mirror could collect a
terawatt of power for beamed propulsion or space solar power beamed to
Earth.
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.
refrigeration wont work. if reflectivity is 99.9% you still ave to move
how many terrawatts(?) from front to back of the spacecraft, AND radiate
that out to cold space on the backside ??
also Gamma rays are going to cook it, +fry electonics.
what are the gamma ray radiation levels close to the sun ?
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This page describes the Parker Solar Probe's cooling system:
Cool Power
Posted on 06/21/2017 09:00:23
http://parkersolarprobe.jhuapl.edu/N...p?articleID=30
Also, I've found NASA scientists are very helpful in responding to questions
from the public if you have more questions on the topic. Contact info for
the Parker Probe scientists is available he
May 26, 2017
MEDIA ADVISORY M17-061
NASA to Make Announcement About First Mission to Touch Sun.
https://www.nasa.gov/press-release/n...n-to-touch-sun
Bob Clark
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