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#20
by
ugordan
on 30 May, 2019 19:20
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The best I can tell rewatching it is the nozzle breakup was accompanied by a strong burst of exhaust gas. I wonder if it was either the nozzle throat actually letting go as the initial failure, allowing out a big burst of gas out which the outer edges of the nozzle couldn't handle either or if it was the entire motor experiencing an overpressure event.
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#21
by
Ronsmytheiii
on 30 May, 2019 19:20
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Seemed like they were doing a lot of gimballing throughout the test (a lot more than would be expected in flight), I wonder if that had anything to do with it?
More importantly, if it IS an issue with the TVC system, what impact does this have on SLS?
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#22
by
DaveS
on 30 May, 2019 19:23
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Seemed like they were doing a lot of gimballing throughout the test (a lot more than would be expected in flight), I wonder if that had anything to do with it?
More importantly, if it IS an issue with the TVC system, what impact does this have on SLS?
None, I'd think as the SLS FSBs uses modified STS hardware which lives inside a much larger and wider aft skirt.
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#23
by
Chris Bergin
on 30 May, 2019 19:25
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Full video:
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#24
by
Bubbinski
on 30 May, 2019 19:26
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Got some pics with my phone. Processing hi-res pics and video
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#25
by
JEF_300
on 30 May, 2019 19:26
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About 5 seconds before the nozzle popped, "Accumulator is enabled" was called out. I don't know if that's actually relevant, but it is true.
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#26
by
Bubbinski
on 30 May, 2019 19:30
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Press conference at 2:05 pm Mountain
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#27
by
DaveS
on 30 May, 2019 19:43
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Press conference at 2:05 pm Mountain
It will be live-streamed on the same stream that carried the test coverage.
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#28
by
ugordan
on 30 May, 2019 19:45
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Press conference at 2:05 pm Mountain
For those of use who are timezone impaired, that should translate to 20 minutes from the time of this post.
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#29
by
ugordan
on 30 May, 2019 19:46
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#30
by
Chris Bergin
on 30 May, 2019 19:47
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#31
by
Chris Bergin
on 30 May, 2019 20:07
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Presser started.
"Generally quite pleased with the test."
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#32
by
Bubbinski
on 30 May, 2019 20:08
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4 years ago they said they’d test the rocket in May 2019, they made it there. Heated to 90 deg, higher thrust. Called it a success. Everything worked very very well, observed aft exit cone “doing something strange”
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#33
by
Bubbinski
on 30 May, 2019 20:10
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Rominger: sparks during tailoff was the “strange event”, not connected with the normal black smoke by the quenching system
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#34
by
Chris Bergin
on 30 May, 2019 20:10
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#35
by
Bubbinski
on 30 May, 2019 20:11
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Harwood: What would the result be during the flight? Any commonality with SLS?
Rominger: getting quick look data within several hours. Could have had a normal, nominal thrust profile but need to analyze the data. Nozzle is different than SLS.
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#36
by
Bubbinski
on 30 May, 2019 20:13
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Question of schedule impact:
Rominger: don’t know, as of now still on schedule for Aug/Sep Castor 300 test
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#37
by
Bubbinski
on 30 May, 2019 20:13
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“This is why we test” - statement repeated just now
700 channels of data
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#38
by
Bubbinski
on 30 May, 2019 20:15
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From the USAF point of view, integral part of development process: Sanjume - working very closely and plan forward from me. Press conference over
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#39
by
Chris Bergin
on 30 May, 2019 20:19
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