Does a coolant leak like this one potentially compromise the departure and EDL ability of the Soyuz MS-22 spacecraft?
Member:I really, really, really hope that the root cause was not MMOD damage from a too-small-to-detect-by-radar debris particle born in the Russian ASAT test. What do we know about Soyuz MS coolant leaks?
Quote from: zubenelgenubi on 12/15/2022 05:01 amMember:I really, really, really hope that the root cause was not MMOD damage from a too-small-to-detect-by-radar debris particle born in the Russian ASAT test. What do we know about Soyuz MS coolant leaks?I had the same thought. "What goes around comes around" (especially in orbit).We know that Soyuz uses water/glycol for the internal ECLSS (see above), and probably uses silicone oil for the external loop.We'd better hope that it's not silicone oil leaking, because it has a nasty tendancy to react with atomic oxygen in LEO to form silica, forming permanent solid deposits which can foul external optics and sensors.
Cross-post:https://forum.nasaspaceflight.com/index.php?topic=57741.msg2441074#msg2441074Does a coolant leak like this one potentially compromise the departure and EDL ability of the Soyuz MS-22 spacecraft?[zubenelgenubi: Posts split/merged to incident updates and discussion thread.]