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Mayak team completes investigation, pins down hydrazine contamination from malfunctioning RCS as likely culprit


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As we know, Mayak wasn’t the only craft to siffer a goof-up. During the cubesat drop in 600 km orbit, a total of 10 payloads ended up suffering complete or gradual loss of power. None of the other oaylods were affected.

The Mayak team has upgraded its official mock-up with flight-grade electronics and ran it through a full set of vibration tests with no issues. They’ve slowly excluded all other internal issues - although they’re desperately trying to not claim that, since it implicates Roscosmos.

The observed electrical faults match the description of damage by a cloud of photodissociating hydrazine, which could be produced if there was a valve or catalyst bed problem - which would not have crippled the Fregat tug, since it performed several burns afterwards.

...which prompted Lenta.ru to accuse Roscosmos of launching Cubesats on an inherently unfit platform.

Edited by DDE
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On 12/21/2017 at 11:15 AM, _Augustus_ said:

I'm actually glad this one failed. Space advertising/useless sats really shouldn't be allowed.

I don't understand this statement at all. How was this "space advertising" and how were all those sats "useless"?


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