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#500
by
wolfpack
on 19 Feb, 2017 01:16
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So, why are you same rah rah people not calling out Spacex for submerging carbon fibers in LOX?
You can always double down on that bet and build the whole LOX tank out of composites...
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#501
by
rockets4life97
on 19 Feb, 2017 01:17
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There are pictures in the update thread showing them working on the stage tonight.
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#502
by
Herb Schaltegger
on 19 Feb, 2017 01:32
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Though I'm not sure how they get someone inside the interstage without separating.
Access panels, no doubt.
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#503
by
Rocket Science
on 19 Feb, 2017 01:33
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Separating the stages to work on? (TVC actuators?) (He spin up plumbing?)
Where do you see the stages separated? doesn't look like they are in that pic. That crane is reportedly used when there is someone working under or in the interstage. Though I'm not sure how they get someone inside the interstage without separating.
You forgot when "tin snips guy" went in there...
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#504
by
envy887
on 19 Feb, 2017 01:41
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Though I'm not sure how they get someone inside the interstage without separating.
Access panels, no doubt.
Probably, but I can't find any interstage pictures showing them.
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#505
by
envy887
on 19 Feb, 2017 01:42
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Separating the stages to work on? (TVC actuators?) (He spin up plumbing?)
Where do you see the stages separated? doesn't look like they are in that pic. That crane is reportedly used when there is someone working under or in the interstage. Though I'm not sure how they get someone inside the interstage without separating.
You forgot when "tin snips guy" went in there...
Not forgotten... just wondering how he got in. And that rocket is vertical, so he's 100+ feet off the ground.
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#506
by
Rocket Science
on 19 Feb, 2017 01:48
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Separating the stages to work on? (TVC actuators?) (He spin up plumbing?)
Where do you see the stages separated? doesn't look like they are in that pic. That crane is reportedly used when there is someone working under or in the interstage. Though I'm not sure how they get someone inside the interstage without separating.
You forgot when "tin snips guy" went in there...
Not forgotten... just wondering how he got in. And that rocket is vertical, so he's 100+ feet off the ground.
Vertical or horizontal, a side panel comes off and in you go...
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#507
by
atsf90east
on 19 Feb, 2017 02:17
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SpaceX did a similar repair / changeout on the TVC actuators on the second stage after they scrubbed the first launch attempt of Thaicom-8. They rolled the Falcon9 back into the HIF at SLC-40 for the repairs, and then went vertical the next morning in plenty of time for the successful launch that afternoon.
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#508
by
Pete
on 19 Feb, 2017 04:10
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I'd say 5 scrubs due to TVC issues IS a problem.
Or maybe SpaceX simply has very stringent specifications for the TVC performance range?
After all, a tvc problem on the second stage is a criticality-1 item, almost guaranteeing mission failure if it sticks for even a few seconds, so a high level of paranoia would be a good thing to have towards their performance...
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#509
by
Stranger
on 19 Feb, 2017 08:11
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maybe, Musk hand trembled?
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#510
by
Rocket Science
on 19 Feb, 2017 09:20
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Perhaps the "larger" question is "why" does the TVC issue keep reoccurring..?
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#511
by
toruonu
on 19 Feb, 2017 10:02
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Perhaps the "larger" question is "why" does the TVC issue keep reoccurring..?
That's one question I'd like someone to ask at the post-launch presser.
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#512
by
kevinof
on 19 Feb, 2017 10:34
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Indeed. At one point late in the countdown I heard them saying something about TVC motion check and then shortly afterwards "good feedback on TVC motion". Seems to be that while it worked it either was slightly off or something in SpaceX's memory raised a flag about previous history with this equipment.
It obviously is self adjusting and compensates maybe there is a manufacturing issue with tolerances being out a little too much for comfort.
Perhaps the "larger" question is "why" does the TVC issue keep reoccurring..?
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#513
by
docmordrid
on 19 Feb, 2017 11:07
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Hosted webcast:
Technical webcast:
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#514
by
Mapperuo
on 19 Feb, 2017 11:16
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#515
by
Mapperuo
on 19 Feb, 2017 11:30
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Hum, not according to the NASA TV livestream. It's horizontal and the sling crane is still attached.
Pre-recorded, they should have put a graphic on that as I was confused for a bit also!
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#516
by
Toastmastern
on 19 Feb, 2017 11:32
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Hum, not according to the NASA TV livestream. It's horizontal and the sling crane is still attached.
Are you sure it is a livestream? SpaceflightNow has had a camera aimed at the pad for the last few days
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#517
by
Johnnyhinbos
on 19 Feb, 2017 11:33
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Hum, not according to the NASA TV livestream. It's horizontal and the sling crane is still attached.
Are you sure it is a livestream? SpaceflightNow has had a camera aimed at the pad for the last few days
It was canned video - I just deleted my previous post to avoid confusion.
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#518
by
Rei
on 19 Feb, 2017 11:46
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Hum, not according to the NASA TV livestream. It's horizontal and the sling crane is still attached.
Pre-recorded, they should have put a graphic on that as I was confused for a bit also!
I hate it when that happens. I once watched an entire livestream of a launch that was actually an old one. I was confused because they were launching from a different location than I thought they were going to be and the payload was different than I thought it was going to be, but I just attributed that to me remembering incorrectly what was going to be launched that day :Þ
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#519
by
Orbiter
on 19 Feb, 2017 12:25
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Absolutely pouring rain at LC-39A right now.
