|
Science Forum Index » Space - Shuttle Forum » Green glow?
Page 1 of 1
|
| Author |
Message |
| Alan Erskine |
 Posted: Tue Mar 11, 2008 1:55 am |
|
|
|
Guest
|
| Was the green glow ionisation caused by speed or was it OMS/thrusters? |
|
|
| Back to top |
|
| John |
| Posted: Tue Mar 11, 2008 3:43 am |
|
|
|
Guest
|
On Mar 11, 4:56 am, Damon Hill <damon1S...@comcast.netnet> wrote:
Quote: "Alan Erskine" <alan.ersk...@bigpond.com> wrote in news:C1qBj.24401
$421.6...@news-server.bigpond.net.au:
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 |
|
|
| Back to top |
|
| John |
| Posted: Tue Mar 11, 2008 3:44 am |
|
|
|
Guest
|
On Mar 11, 4:56 am, Damon Hill <damon1S...@comcast.netnet> wrote:
Quote: "Alan Erskine" <alan.ersk...@bigpond.com> wrote in news:C1qBj.24401
$421.6...@news-server.bigpond.net.au:
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 |
|
|
| Back to top |
|
| Damon Hill |
| Posted: Tue Mar 11, 2008 3:56 am |
|
|
|
Guest
|
"Alan Erskine" <alan.erskine@bigpond.com> wrote in news:C1qBj.24401
$421.6225@news-server.bigpond.net.au:
Quote: 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 |
|
|
| Back to top |
|
| |
