Re: STS-114 Touchdown (Color)
- From: Dave Mayes <dmayes57@xxxxxxxxx>
- Date: Mon, 31 Mar 2008 07:05:00 -0700 (PDT)
On Mar 30, 3:45 pm, "max...@xxxxxxxxxxxxxx" <max...@xxxxxxxxxxxxxx>I viewed the STS 123 landing video. There does appear to be a fire
wrote:
Okay, I just got some great feedback by E-mail. The IR video above is
on-again and off-again, as far as APU heat or fire. Thus the single
frame above doesn't settle any STS-123 issues.
JTM- Hide quoted text -
coinciding with nominal APU exhaust cycling. It emanates from the APU
exhaust
port 1 or 2 on the left side of the orbiter. I do not think the
flame/fire is nominal. Overheated hydrogen and/or ammonia would be the
most likely fuels causing the fire as they come in contact with
atmospheric oxygen after exiting the APU exhaust port. I have not seen
it on previous non IR landing videos of other orbiters. I have seen
nominal APU exhaust on IR videos and it is quite cyclical in nature.
Perhaps APU 1 or 2 overheated on this flight?
Dave
.
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