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#1
March 11th 08, 06:55 AM
posted to sci.space.shuttle
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Green glow?
Was the green glow ionisation caused by speed or was it OMS/thrusters?
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#2
March 11th 08, 08:56 AM
posted to sci.space.shuttle
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Green glow?
"Alan Erskine" wrote in news:C1qBj.24401
: Was the green glow ionisation caused by speed or was it OMS/thrusters? OMS and APU exhaust, my guess. The catalyzsed hydrazine used to drive the APUs contains unburned ammonia and hydrogen; perhaps it's burning externally for a while, but not above the lower atmosphere. I think this is the first video of a totally dark night launch I've seen, and I can only guess at some of the visible events. It was very interesting! --Damon
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#3
March 11th 08, 01:43 PM
posted to sci.space.shuttle
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Green glow?
On Mar 11, 4:56*am, Damon Hill wrote:
"Alan Erskine" wrote in news:C1qBj.24401 : Was the green glow ionisation caused by speed or was it OMS/thrusters? OMS and APU exhaust, my guess. *The catalyzsed hydrazine used to drive the APUs contains unburned ammonia and hydrogen; perhaps it's burning externally for a while, but not above the lower atmosphere. I think this is the first video of a totally dark night launch I've seen, and I can only guess at some of the visible events. *It was very interesting! --Damon Although it seemed the camera settings kept changing . . . there were a few moments where it almost seemed where you could see in the IR renage (I suspect there is no real IR in those ET cams) There were a couple of glowing leading edges on the wings that were quite neat to see. John
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#4
March 11th 08, 01:44 PM
posted to sci.space.shuttle
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Green glow?
On Mar 11, 4:56*am, Damon Hill wrote:
"Alan Erskine" wrote in news:C1qBj.24401 : Was the green glow ionisation caused by speed or was it OMS/thrusters? OMS and APU exhaust, my guess. *The catalyzsed hydrazine used to drive the APUs contains unburned ammonia and hydrogen; perhaps it's burning externally for a while, but not above the lower atmosphere. I think this is the first video of a totally dark night launch I've seen, and I can only guess at some of the visible events. *It was very interesting! --Damon Oh . . . and it was kind of neat to see the APU exhaust chuffing from the top of the vehicle after MECO. Something else that a night time view allowed us to see. John
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