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  #31  
Old 04-11-2021, 01:59 AM
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Royatl Royatl is offline
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Quote:
Originally Posted by LeeR
The buckets contain coiled up “starters” (interestingly, the Russians frown on the use of the term “igniters”, too). These are inserted while horizontal, to make sure they are fully seated. Then the plastic plugs are installed. To this day, much arguing ensues regarding connecting in parallel, or serially.


Well, "start" is their word for launch. And the launch pad, for that matter.
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  #32  
Old 04-25-2021, 08:50 AM
frognbuff frognbuff is offline
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Rollout of Soyuz at Vostochny Cosmodrome and - no buckets!

https://www.youtube.com/watch?v=VdUc7i_NUkw

Like Kourou, the vehicle stays vertical on the pad at Vostochny longer than at Baikonur. (They roll a vertical shelter over the vehicle on the pad at Vostochny). I definitely think there is some sort of fluid which is added when horizontal at Baikonur, but is likely added while vertical at Kourou for Vostochny - so, no need for "catch buckets" during those rolls.
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  #33  
Old 04-25-2021, 02:42 PM
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Here's a couple older pics (2008?) one showing the booster vertical with the cans still in place. The hoses look like they run up to some fitting on the side. The other shot shows, at least on the core, the can has been removed. Dessicant? Hydraulic drain or make-up?
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  #34  
Old 04-26-2021, 06:17 AM
frognbuff frognbuff is offline
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I still think the latter two. If it was desiccant, you would for sure want that in Kourou!
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