Author Topic: SpaceX Texas launch site Discussion and Updates - Thread 12  (Read 711601 times)

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1480 on: 12/10/2022 09:06 am »
https://twitter.com/thejackbeyer/status/1601517327635415048

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Damaged concrete was removed from under the Orbital Launch Mount, crews worked on the Mega Bay extension, and work on the Orbital Launch Mount and Tower continued.

Video from Nic (@NicAnsuini) for @NASASpaceflight.

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Damaged concrete was removed from under the Orbital Launch Mount, crews worked on the Mega Bay extension, and work on the Orbital Launch Mount and Tower continued.

Video from Nic (@NicAnsuini). Edited by Jack (@theJackBeyer).

All content copyright to NSF. Not to be used elsewhere without explicit permission from NSF.

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0:00 - The Orbital Launch Site
0:25 - Crews Work on the Orbital Tank Farm Berm Extension
1:33 - Ship 24 on Pad B
2:18 - Crews Work on the OLM and the Concrete Under It
4:33 - Launch Mount Cladding
5:43 - Orbital Launch Mount Work
6:10 - Tower Cladding and the Chopsticks
6:39 - The Ship Quick Disconnect Arm
7:13 - Wildlife Habitat Sign on the Dunes
7:32 - Starship Transport Stand at the Rocket Garden
7:56 - Employee Airstreams Next to the Mega Bay
8:15 - Crews Working on the Mega Bay Extension
8:52 - Test Tanks and the Propellant Plant
9:08 - Barrel Sections Inside Starfactory

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1482 on: 12/13/2022 09:11 am »
Todays NSF update covers SS 24 and launch site work:

https://twitter.com/thejackbeyer/status/1602604491420962817

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Ship 24 repairs appear to be complete, work on the OLM continued, and a large amount of prefab conduit was spotted at the Launch Site.

Video and Pictures from Nic (@NicAnsuini), Nomadd (@nomadd13), and Starbase Live for @NASASpaceflight.

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Quote
Ship 24 repairs appear complete with SpaceX's LR 11000 crane having been disconnected from it and all scaffolding removed. Meanwhile, work on the Orbital Launch Mount continued and a large amount of prefabricated conduit was spotted at the Launch Site.

Video and Pictures from Nic (@NicAnsuini), Nomadd (@nomadd13), and Starbase Live. Edited by Thomas (@_thomashayden).

All content copyright to NSF. Not to be used elsewhere without explicit permission from NSF.

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0:00 - Scaffolding Around Ship 24 Removed
0:40 - SpaceX’s LR 11000 Crane Detached From Ship 24
1:07 - The Launch Site
1:22 - Delivery At the Launch Site
1:41 - Starhopper
1:58 - The Orbital Launch Tower
2:33 - The Orbital Launch Mount
2:53 - Shielding Around Conduit on the Legs
3:50 - Cladding on the Orbital Launch Tower
4:29 - Extension Work on the Orbital Tank Farm Berm
4:49 - Ship 24
5:21 - Suborbital Pad A
6:11 - Prefab Underground Conduit
7:49 - Damaged Tiles Next to the Payload Bay Hatch

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1483 on: 12/13/2022 08:25 pm »
More tower cladding / shielding?

https://twitter.com/csi_starbase/status/1602661971719061506

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lmao... some fantastic crane work spotted by Agent @VickiCocks15  yesterday.

Offline AU1.52

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1484 on: 12/14/2022 12:36 pm »
More tower cladding / shielding?


...


No, Looks like the crane was moving concrete form work from the extension to the concrete berm.

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1486 on: 12/14/2022 11:18 pm »
https://twitter.com/vickicocks15/status/1603115280045047808

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#SpaceX seem to be prepping for Booster testing at #Starbase again! But which booster? The BQD has opened...and closed...several times today, but this was both tests run as one. 8X speed to fit it to Twitter, but even so, it was pretty quick. @LabPadre #Rover2Cam

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1487 on: 12/15/2022 09:43 pm »
https://twitter.com/csi_starbase/status/1603519120707813377

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(2/3)  Turned my back for one week...and this is what happened to the Stage 1 Pre-Press manifold.

A lot going on here, but one of the biggest takeaways, is they finally separated the CH4 and LOX prepress so there is now ZERO chance of an accident occurring 🙌🏾

📸:@StarshipGazer

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1488 on: 12/16/2022 05:53 am »
https://twitter.com/csi_starbase/status/1603610349399429120

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Hey #StarshipAddicts, check out this full speed retract of the BQD/Ship QD, and GSE arm.

This is a simulated launch sequence, which takes approximately 15 seconds.  It appears that the GSE arm will still be moving out of the way as the vehicle is clearing the pad.

🎥:@Labpadre

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1489 on: 12/16/2022 08:44 am »
twitter.com/csi_starbase/status/1603529061371879424

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(3/3) I have been waiting for this for more than a year. New valves have been installed on CH4 and LOX Fill/Drain pipes on the Orbital Launch Mount.

3 pages isn't enough. I have to expand on this a little more.

📸:@StarshipGazer

https://twitter.com/csi_starbase/status/1603529064035549184

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Continued:

The reason I have been waiting for these valves, is because without them, the only thing controlling the flow of fuel to the booster is the valves on Booster QD faceplate. The next set of valves are inside of the fluids bunker...150 meters away.

📸:@StarshipGazer

twitter.com/csi_starbase/status/1603529065717194754

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Continued:

I have always felt that in the event of a RUD, this could become a major issue. If the booster explodes while the BQD is connected, than you can say goodbye to those valves and the BQD becomes a giant flame thrower

📸:@StarshipGazer

https://twitter.com/csi_starbase/status/1603529067235577859

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Conclusion:

There are other major changes that have been made here as well, but this is by far the most important in my opinion. I'll save the rest for later when they finally remove all the scaffolding.

📸:@StarshipGazer

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1490 on: 12/19/2022 08:25 pm »
https://twitter.com/cosmicalchief/status/1604938570069843968

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This new kettle subcooler has been offloaded at the production site. Doesn't look bound for the orbital tank farm anytime soon.
#Starbase #Starship #SpaceX
📸 Me for WAI Media @FelixSchlang

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1491 on: 12/20/2022 10:12 am »
https://twitter.com/thejackbeyer/status/1605158139271122945

Quote
The Booster and Ship QD were tested repeatedly. Meanwhile, Ship 26 was fully stacked in the High Bay and a new propellant subcooler was delivered.

Video and Pictures from Nic (@nicansuini), Nomadd (@nomadd13), and Starbase Live for
@NASASpaceflight.

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Ship and Booster Quick Disconnects Tested for Launch | SpaceX Boca Chica

20 Dec 2022

The Booster and Ship QD were tested together in what appeared to be an analog of their expected behavior during a launch of Starship. Meanwhile, Ship 26 was fully stacked in the High Bay and a new propellant subcooler was delivered.

Video and Pictures from Nic (@nicansuini), Nomadd (@nomadd13), and Starbase Live. Edited by Jack (@theJackBeyer).

All content copyright to NSF. Not to be used elsewhere without explicit permission from NSF.

Click "Join" for access to early fast turnaround clips, exclusive discord access with the NSF team, etc - to support the channel.

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L2 Boca Chica (more clips and photos) from BC's very early days to today.
https://forum.nasaspaceflight.com/ind...
(Join L2 and support NSF here: https://www.nasaspaceflight.com/l2/)

0:00 - Ship 26 Stacked in the High Bay
0:36 - Booster QD and Ship QD Arm Retract Sequence (real time)
1:07 - Booster QD and Ship QD Arm Extended (10x speed)
1:32 - Concrete Forms on the Tank Farm Berm Extension Removed
2:01 - Ship 24
2:58 - Booster 9 Waiting to be Proof Tested
3:14 - More Booster QD and Ship QD Arm Retract Testing
4:19 - BQD and Ship QD Retract and Arm Movement (real time)
4:38 - Booster QD Retract (real time)
4:55 - Booster QD Extension (sped up 5x)
5:19 - Ships 25 and 26 in the High Bay
6:11 - Crews Work on Ship 25’s Payload Bay
6:58 - SpaceX’s South Texas Tracking Station
7:17 - SPMTs Moved From Launch Site
8:05 - Gantry Crane Outside Tent 3 Moved
8:27 - SpaceX LR 11000 Crane Moved Across the Launch Site
9:07 - New Subcooler Delivered

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1492 on: 12/29/2022 06:48 pm »
https://twitter.com/rgvaerialphotos/status/1608546061911719937

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New delivery of mystery objects in route to Starbase.

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1493 on: 12/30/2022 01:25 am »
Apologies for a newbie-style question. I'm surely doing the math wrong but is Raptor 2 SL exhaust moving at something like Mach 8 flow speeds when it exits the nozzle? How does the Earth below not simply ... disintegrate ... in the face of that?
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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1494 on: 12/30/2022 02:43 am »
Not really a launch site question. Why not try the Raptor Engine thread in the Starship forum?

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1495 on: 12/30/2022 03:43 am »
Not really a launch site question. Why not try the Raptor Engine thread in the Starship forum?
How is damage to the launch site not a launch site question?
 I got the impression concrete damage was mostly from heat and acoustical shock.
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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1496 on: 12/30/2022 05:08 am »
Apologies for a newbie-style question. I'm surely doing the math wrong but is Raptor 2 SL exhaust moving at something like Mach 8 flow speeds when it exits the nozzle? How does the Earth below not simply ... disintegrate ... in the face of that?
AIUI the exhaust plume generates a high pressure gas bubble below the the rocket that the follow on exhaust plume bounces off. The exhaust can not leave the volume of space beneath the launch table fast enough to not build up a high pressure gas bubble. The circular wall of water mist from deluge system that vaporized around the launch mount also slows the movement of the exhaust plume away from the volume underneath the launch table.

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1497 on: 12/30/2022 05:48 am »
In the last WAI episode (1'30'') , there was an interesting point regarding some possible flame diverter works under the pad from RGV team pictures.

There were what looked like wood forms being prepared for concrete pouring in interesting shapes: a big central ring and trapezoids for each leg.

I can imagine how certain slopes combined with shapes, even they are not very inclined, would already help a lot to divert energy out compared to the actual flat "bouncing" surface.

But maybe I´m seeing unicorns and this is just a way of splitting the area in easier to repair sections, though very complex shapes for that simple purpose.

Has this been discussed further? I found it pretty interesting and I´ve seen no follow up.



edit: video link
« Last Edit: 12/30/2022 05:50 am by Jimmy Murdok »

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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1498 on: 12/30/2022 07:05 am »
I can imagine how certain slopes combined with shapes, even they are not very inclined, would already help a lot to divert energy out compared to the actual flat "bouncing" surface.

edit: video link

Why do you think a flat surface is bouncy for a supersonic flow?

A strong constraint is they have to drive the lift underneath to do maintenance, so whatever they are doing, it won't prevent a lift from being driven underneath the mount.

So very slight countours, maybe.  Or just replaceable sections. 

Maybe the center is going to be steel sheet instead of concrete


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Re: SpaceX Texas launch site Discussion and Updates - Thread 12
« Reply #1499 on: 12/30/2022 04:50 pm »
I can imagine how certain slopes combined with shapes, even they are not very inclined, would already help a lot to divert energy out compared to the actual flat "bouncing" surface.

edit: video link

Why do you think a flat surface is bouncy for a supersonic flow?

A strong constraint is they have to drive the lift underneath to do maintenance, so whatever they are doing, it won't prevent a lift from being driven underneath the mount.

So very slight countours, maybe.  Or just replaceable sections. 

Maybe the center is going to be steel sheet instead of concrete
The pad was cast with the same shaped framework last time so it is mostly likely just flat. The reason for doing it that way is to get seams that control cracking and perhaps to permit piecewise replacement.
« Last Edit: 12/30/2022 04:51 pm by eriblo »

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