Riegel_Haribo OP t1_j12kglr wrote on December 21, 2022 at 5:01 AM

Reply to comment by AwfulEveryone in Evaluation reveals 0.8mm hole in Soyuz MS-22 spacecraft — "not very pleasant", replacement being prepared [Roscosmos/TASS] by Riegel_Haribo

The Soyuz MS-22 mission spacecraft is docked at the Russian segment of the International Space Station. It delivered three crew on September 21. It is also the same return vehicle (and emergency egress) for that personnel. It began unexpectedly leaking coolant into space December 15.

Coolant circulates through all three parts of the craft and external radiators to manage temperature of equipment and habitable space, as the "cold" vacuum of space alone doesn't cool the craft (that also is in unfiltered sunlight the majority of the orbit).

roscosmos.ru is unreachable, but here is a human translation of their update: https://twitter.com/katlinegrey/status/1604818480259366912 "Soyuz MS-23 can be prepared for flight by February"

AwfulEveryone t1_j12nkfe wrote on December 21, 2022 at 5:32 AM

Thank you, that tweet explained everything beautifully!

Triabolical_ t1_j14hm5j wrote on December 21, 2022 at 4:38 PM

Interestingly, the hard part for spacecraft is staying cool rather than staying warm, because the only way to get rid of heat is to radiate it away. ISS has big radiators, and shuttle had radiators on the inside of the payload doors.