Author Topic: LIVE: Zenit-3SLB launch with Intelsat-18 satellite - October 5, 2011  (Read 54551 times)

Offline Lewis007

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Roscosmos launch video


Offline ugordan

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To clarify, I was looking at the stream of gas that I've highlighted in the second attached image.

Yeah, looks like classic condensation off the tank skin being swept to one side by wind.

Not all weather conditions are created equal so comparing to previous launches isn't indicative of anything. Just look at Atlas launches, some of them have hailstorms of ice and vapor coming off at launch, others not so much.

Offline Art LeBrun

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Condensed vapor along the tank skin?

It looks like LOX venting from the second or third stage.  I suppose that a vent valve might have opened to release pressure just at liftoff.
 - Ed Kyle
Titan 1 launch images show a gaseous venting coming from a location at the  bottom of the second stage just above the interstage adapter. I have tried unsuccessfully to determine the purpose. Anyone have any ideas? Might apply to Zenit as well. And no - this is not an ice flow,
1958 launch vehicle highlights: Vanguard TV-4 and Atlas 12B

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