[AR] Re: Falcon 9 flight today
- From: Ed Kelleher <Pres@xxxxxxxxxxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Tue, 01 Oct 2013 11:03:19 -0400
Thanks for the link.
What are the bright streamers in the exhaust after shutdown?
Time 0:29 in the video, T+75 of the engine test.
Is it coking? Intentional for cooling? Accidental/Incendental?
Ed
At 10:36 AM 10/01/2013, johndom@xxxxxxxxx wrote:
<http://www.youtube.com/watch?v=Zj0851Wkm9c>http://www.youtube.com/watch?v=Zj0851Wkm9c
Nice clip showing 1D turbine exhaust.
jd
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Van: arocket-bounce@xxxxxxxxxxxxx
[mailto:arocket-bounce@xxxxxxxxxxxxx] Namens JMKrell@xxxxxxx
Verzonden: maandag 30 september 2013 4:04
Aan: arocket@xxxxxxxxxxxxx
Onderwerp: [AR] Re: Falcon 9 flight today
I've been studying the Falcon 9r turbine exhaust port pattern. The
peripheral engine exhaust ports were moved inboard, the center
engine turbine exhaust is next to the engine and appears to have a
collar, which could be a deflector for roll control. Yes, it is only
my supposition, but that is how I would design the system for roll
control. It is an easy modification and carries a lower weight
penalty than cold gas without a reaction time limit in the event
maximum design limits are exceeded. Flipping the stage and settling
the propellants would be a good application for cold gas.
John Krell
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