Author Topic: SpaceX Cape 39A Starship launch/landing facilities  (Read 271155 times)

Online chopsticks

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #500 on: 06/23/2022 05:52 pm »


-snip-
I can't help but suspect there might be further issues if said analysis shows the VAB and 39B within the potential blast radius. I believe KSC was sized for a Nova-scale rocket, not Saturn V, but I'd think SS + SH would surpass even that.

Nova Rocket liftoff thrust: 4,536 - 9,072 tonnes

SH liftoff thrust: 7,590 tonnes

https://en.wikipedia.org/wiki/Nova_(rocket)

It’s not just the thrust (and total sound pressure level). It’s the potential pressure wave from a detonation event. All of that data has been developed and presented to the FAA as part of SpaceX’s prior submissions during the Boca Chica regulatory process. So SpaceX and NASA already know if there’s a significant risk to the VAB (which I doubt). The risks, if any, are to the F9 Commercial Crew facilities and HIF inside the LC39A perimeter.

I know, but it's still a useful point of comparison.

I assume that methane as a propellant would be a higher overpressure event than kerosene in a RUD, but I don't have anything to back that up.

Offline r8ix

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #501 on: 06/23/2022 07:28 pm »
-snip-
I can't help but suspect there might be further issues if said analysis shows the VAB and 39B within the potential blast radius. I believe KSC was sized for a Nova-scale rocket, not Saturn V, but I'd think SS + SH would surpass even that.

Nova Rocket liftoff thrust: 4,536 - 9,072 tonnes

SH liftoff thrust: 7,590 tonnes

https://en.wikipedia.org/wiki/Nova_(rocket)

That article only shows 6314 tonnes for Nova...

Offline ThatOldJanxSpirit

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #502 on: 06/24/2022 06:41 am »
Zack Golden’s CSI_Starbase Episode 5

https://m.youtube.com/watch?v=V9AYvtuQ95I&feature=youtu.be

The last section (from around 32 minutes) is a launch table deep dive. It includes images of 39A launch table segments and a good assessment of why this build will be faster than Texas.

I know some of you get sniffy about his style, but that’s what pays his bills and the content is superb.

Offline pyromatter

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Online AS_501

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Launches/Scrubs attended:  Apollo 11, ASTP*, STS-31**, STS-41G, STS-125, EFT-1 (*@KSC, not Baikonur! **scrub)
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Online DanClemmensen

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #505 on: 06/24/2022 04:38 pm »
https://www.yahoo.com/news/nasa-spacex-assess-potential-starship-193358304.html
This is a well-written piece. No new news (the NASA announcement was three days ago) but this story clearly states the situation. NASA as the CCP customer recognizes that pat 39A is a single failure point for CCP right now, since there is no backup for crew Dragon and Crew Dragon cannot launch from any other pad. (SLC-40 has no crew gantry). NASA as the landlord for the pad 39 complex has the authority to withhold permission for SpaceX to use pad 39b for anything that is too high a threat to pad 30A. NASA will not grant SpaceX permission for stuff that is "too risky", like Starship wet dress rehersals and launches, until SpaceX convinces NASA that the risk is low enough.

Offline ThatOldJanxSpirit

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #506 on: 06/26/2022 05:38 am »
Another sighting of a launch table segment reported by Zack Golden.

https://mobile.twitter.com/CSI_Starbase/status/1540839279097692161

Note that his assessment is that this may be for the rigs or the cape, and if it is for the cape it’s running late.
« Last Edit: 06/26/2022 05:40 am by ThatOldJanxSpirit »

Offline Cheapchips

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #507 on: 06/26/2022 08:28 am »
And another from Zack. Hydraulic pistons for the cape chopsticks.

That's BC. He mentioned them as a missing item in his latest video (ep5). They're for the shock absorbing 'rails'.

Offline Herb Schaltegger

Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #508 on: 06/26/2022 01:15 pm »
Another sighting of a launch table segment reported by Zack Golden.

https://mobile.twitter.com/CSI_Starbase/status/1540839279097692161

Note that his assessment is that this may be for the rigs or the cape, and if it is for the cape it’s running late.

Why is it “late”? The LC39A tower has all of two segments stacked, with the last one or two not even started assembling yet. All the tower segments need to be stacked, the vertical members filled with concrete, and all the commodities lines and telemetry/power cabling need to be installed and integrated. There’s plenty of time (weeks at least) before the launch table becomes the singular pacing item.
« Last Edit: 06/26/2022 01:16 pm by Herb Schaltegger »
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Online baking

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #509 on: 06/26/2022 02:11 pm »
Another sighting of a launch table segment reported by Zack Golden.
Note that his assessment is that this may be for the rigs or the cape, and if it is for the cape it’s running late.

Why is it “late”? The LC39A tower has all of two segments stacked, with the last one or two not even started assembling yet. All the tower segments need to be stacked, the vertical members filled with concrete, and all the commodities lines and telemetry/power cabling need to be installed and integrated. There’s plenty of time (weeks at least) before the launch table becomes the singular pacing item.
I think Zack is being a bit over dramatic.  Some of the OLM segments have already been sighted at Roberts Road, but not all ten.  Also, the truck is headed East so Florida is still a likely destination.

Offline ThatOldJanxSpirit

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Offline Cheapchips

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #511 on: 06/27/2022 11:02 am »
Another sighting of a launch table segment reported by Zack Golden.

https://mobile.twitter.com/CSI_Starbase/status/1540839279097692161

Note that his assessment is that this may be for the rigs or the cape, and if it is for the cape it’s running late.

Why is it “late”? The LC39A tower has all of two segments stacked, with the last one or two not even started assembling yet. All the tower segments need to be stacked, the vertical members filled with concrete, and all the commodities lines and telemetry/power cabling need to be installed and integrated. There’s plenty of time (weeks at least) before the launch table becomes the singular pacing item.

Dramatic wording aside, the Boca launch table was an absolute dog to build.  It could be a pacing item of many months.  They will have done more pre-work on the segments for 39a, so we'll see how it comes together.

Online DanClemmensen

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #512 on: 06/27/2022 03:57 pm »

Dramatic wording aside, the Boca launch table was an absolute dog to build.  It could be a pacing item of many months.  They will have done more pre-work on the segments for 39a, so we'll see how it comes together.
The BC OLT was the first prototype, and they did several major changes requiring major rework. Presumably, this one, though still a prototype, will need much less rework, unless of course bad stuff happens at BC when Starship launches or even during static fire. We'll see.

Offline FutureSpaceTourist

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #513 on: 06/27/2022 11:37 pm »
https://twitter.com/nextspaceflight/status/1541565997475254273

Quote
It is Starship Florida tower roll time again! Going live shortly for segment #3.


Offline FutureSpaceTourist

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #514 on: 06/28/2022 12:13 am »
https://twitter.com/nasaspaceflight/status/1541575159986929664

Quote
LC-39A Starship Launch Tower Section 3: "I live my life a quarter of a mile at a time"

#Speedy

youtube.com/watch?v=kjnDtH…

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Offline Patrick_colquhoun

Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #516 on: 06/28/2022 05:42 pm »
The first parts of the Chopstick system that will be used to catch and stack Starship were spotted at SpaceX's Roberts Road facility. At LC-39A, the Starship launch tower keeps growing, and a new rocket, Relativity Space’s Terran 1, was spotted at its launch site at the Cape.




Offline FutureSpaceTourist

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Re: SpaceX Cape 39A Starship launch/landing facilities
« Reply #519 on: 07/01/2022 05:48 pm »
https://twitter.com/lolomatico3d/status/1542921199281487872

Quote
The 3rd tower segment of #SpaceX ´s OLIT 2.0 is now stacked at the cape.

Huge pieces of the Chopsticks were also spotted at the buildsite. (colored black, in the diagram)
Keep in mind that the Chopstick pieces are not yet welded together 😁

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