Can you give the precise name of this rocket component is, and its role?
#ArianeGrouppic.twitter.com/UsPr0HLdPS
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I'm sure in the injector part and its job, but if you're asking back... Maybe for Prometheus instead of Vulcain?
Well if I didn't guess it, then I'd go for an unrevealed super secret crazy rocket which would be really cool to hear about. :D
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