Author Topic: SLS General Discussion Thread 8  (Read 353679 times)

Offline yg1968

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Re: SLS General Discussion Thread 8
« Reply #1100 on: 10/25/2024 06:19 pm »
Bloomberg says that there is no need to put people on the moon for scientific purposes, and I think he's probably right about that. That's not to say, though, that there might be other reasons for putting people on the moon or for sending people elsewhere in the solar system for scientific or other purposes. Non-scientific purposes for people on the moon might include national prestige (obviously the major point of Apollo, and also, I think, the major point of Artemis after corporate welfare and jobs), resource development, and development and testing of space technology.

Bloomberg isn't saying that, he is saying that there is no reasons to send humans to the Moon for any reason.

Quote from: Bloomberg
The problems start with the mission, which is more political than scientific. There is little humans can do on the moon that robots cannot. Technology has come a long way since 1969, to put it mildly. We do not need another person on the moon to collect rocks or take scientific measurements. And the costs of putting people on the moon — and of planning for their potential rescue, should complications arise — are truly astronomical.

Online catdlr

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Re: SLS General Discussion Thread 8
« Reply #1101 on: 11/03/2024 11:57 am »
Phillip Sloss Update

Time  Chapter Name
03:43 Artemis II schedule uncertainty also continues
09:35 Artemis II Core Stage prepared for breakover and lift
12:03 Boeing SLS Core Stage facility in VAB High Bay 2 nearing activation
14:18 EGS work on Mobile Launcher-1 in the VAB in the meantime
15:46 Boeing SLS SSPF worksite at engine section capacity

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Online catdlr

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Re: SLS General Discussion Thread 8
« Reply #1102 on: 11/07/2024 06:46 pm »
https://twitter.com/NASASpaceflight/status/1854597020000174224

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NSF's Philip Sloss spoke with Steve Wofford, NASA SLS Stages Element manager, about completing expansion work for NASA SLS Core Stage production at KSC.
« Last Edit: 11/07/2024 06:47 pm by catdlr »
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Offline spacenut

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Re: SLS General Discussion Thread 8
« Reply #1103 on: 11/07/2024 10:14 pm »
Isn't Boeing trying to sell their NASA business?  Also, will SLS be scrapped the next 4 years by the "Department Of Government Efficiency" "DOGE by Musk? 

With a stripped down Starship upper stage, without fins, TPS, etc, it can launch using the reusable booster about 250 tons.  That is over double what SLS can do for $1 or $2 billion at a much lower price.  If SpaceX and Blue Origin get their big boosters going, you have competition and reuse at a lower price.  It seems to make no sense to keep going with SLS. 

Offline wannamoonbase

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Re: SLS General Discussion Thread 8
« Reply #1104 on: 11/08/2024 07:33 pm »
Isn't Boeing trying to sell their NASA business?  Also, will SLS be scrapped the next 4 years by the "Department Of Government Efficiency" "DOGE by Musk? 

With a stripped down Starship upper stage, without fins, TPS, etc, it can launch using the reusable booster about 250 tons.  That is over double what SLS can do for $1 or $2 billion at a much lower price.  If SpaceX and Blue Origin get their big boosters going, you have competition and reuse at a lower price.  It seems to make no sense to keep going with SLS. 

Agreed 100%, SLS has always been a political vehicle.  When it was initiated Starship wasn't even a sparkle in someone's eye (That's how old it is).

New Glenn or Starship provide vastly more affordable options.  And they could free up SLS, Mobile platform and EUS funds.

Solves Boeing's problem with selling SLS too, just kill it.

Whether congress allows it, we shall see.  Does anyone in congress really care enough about space to do anything about it?

We are for 100% certain about to find out.
Starship, Vulcan and Ariane 6 have all reached orbit.  New Glenn, well we are waiting!

Online catdlr

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Re: SLS General Discussion Thread 8
« Reply #1105 on: 11/09/2024 05:24 pm »
NSF's Phillip Sloss weekly report:  November 9, 2024

Checking in on SLS Core Stage production while waiting for the post-election dust to settle



Quote
Nov 9, 2024
Everyone is waiting to see what plans are in store for the second President Trump term after he was re-elected, but it's less than a week since Election Day; in the meantime, I'll recap my recent interview with NASA SLS Stages manager Steve Wofford.  Boeing has completed the first two stage units and handed them over to NASA, so I asked about the current production status for the next three builds.  NASA has two of them fully under contract, so I asked how the next one, the fifth unit, is being contracted.

I also go over a couple of non-election news items: SpaceX announced a target launch date for the next Starship flight test and apparently has decided not to lease High Bay 1 in the Vehicle Assembly Building at Kennedy Space Center.

Couple of footnotes:

1. Adding a link in the video to the NSF story ended up being more distracting than it was worth; the link is in the description below.

2. In the video, I refer to "Michoud," which is NASA's Michoud Assembly Facility in New Orleans.  That's the primary production site for SLS stages.

Imagery is courtesy of NASA, except where noted.

Stories, papers cited:
https://www.nasaspaceflight.com/2024/11/core-stage-facility-expansion/

https://ntrs.nasa.gov/citations/20230001023

https://www.npr.org/2024/11/07/nx-s1-5182280/trump-2024-elon-musk-tesla-x


00:00 Intro
00:33 Recap of interview with NASA SLS Stages Element manager Steve Wofford
01:42 Restarting production of Core Stage main propulsion system components
08:40 Core Stage-3 production status
14:12 Core Stage-4 production status
18:49 When is Core Stage-5 engine section production going to start?
23:25 News and notes for the week, Trump re-elected
24:14 Starship flight test 6 target launch date announced
24:53 VAB High Bay 1 commercial lease status
27:10 Thanks for watching!
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Offline panjabi

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Re: SLS General Discussion Thread 8
« Reply #1106 on: 11/13/2024 01:35 am »
Eric Berger now has a tweet up saying that there is an even chance ALL of SLS is canceled.

https://twitter.com/SciGuySpace/status/1856522880143745133

Quote
To be clear we are *far* from anything being settled, but based on what I'm hearing it seems at least 50-50 that NASA's Space Launch System rocket will be canceled. Not Block 1B. Not Block 2. All of it. There are other ways to get Orion to the Moon.

Offline docmordrid

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Re: SLS General Discussion Thread 8
« Reply #1107 on: 11/13/2024 06:09 am »
Eric Berger now has a tweet up saying that there is an even chance ALL of SLS is canceled.

Quote
To be clear we are *far* from anything being settled, but based on what I'm hearing it seems at least 50-50 that NASA's Space Launch System rocket will be canceled. Not Block 1B. Not Block 2. All of it. There are other ways to get Orion to the Moon.

Follow up to Scott Manley

The return of Bridenstein's Monster

https://twitter.com/SciGuySpace/status/1856538263915225194?s=19

Quote
My sense is that the solution would be launching Orion on one rocket (probably FH, from 39A) and then docking with a (separately launched) Centaur V and boosting it to the Moon.
« Last Edit: 11/13/2024 07:45 pm by zubenelgenubi »
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Offline jpo234

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Re: SLS General Discussion Thread 8
« Reply #1108 on: 11/13/2024 11:10 am »
https://x.com/SciGuySpace/status/1856538263915225194?s=19

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My sense is that the solution would be launching Orion on one rocket (probably FH, from 39A) and then docking with a (separately launched) Centaur V and boosting it to the Moon.
It's nice if you have a bunch of heavy lifters to choose from (SLS, FH, New Glenn, Starship).
You want to be inspired by things. You want to wake up in the morning and think the future is going to be great. That's what being a spacefaring civilization is all about. It's about believing in the future and believing the future will be better than the past. And I can't think of anything more exciting than being out there among the stars.

Offline Oersted

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Re: SLS General Discussion Thread 8
« Reply #1109 on: 11/13/2024 12:35 pm »
Eric Berger now has a tweet up saying that there is an even chance ALL of SLS is canceled.

https://twitter.com/SciGuySpace/status/1856522880143745133

Quote
To be clear we are *far* from anything being settled, but based on what I'm hearing it seems at least 50-50 that NASA's Space Launch System rocket will be canceled. Not Block 1B. Not Block 2. All of it. There are other ways to get Orion to the Moon.

Big news if true.

Online catdlr

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Re: SLS General Discussion Thread 8
« Reply #1110 on: 11/13/2024 12:43 pm »
A report from NSF's Philip Sloss:  (cross-posted from the Moon Mission and Space Policy threads)

What changes could Musk and Trump have planned for Artemis (and SLS) in 2025?

https://forum.nasaspaceflight.com/index.php?topic=58212.msg2640933#msg2640933
« Last Edit: 11/13/2024 12:43 pm by catdlr »
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Offline clongton

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Re: SLS General Discussion Thread 8
« Reply #1111 on: 11/13/2024 04:16 pm »
Eric Berger now has a tweet up saying that there is an even chance ALL of SLS is canceled.

Quote
To be clear we are *far* from anything being settled, but based on what I'm hearing it seems at least 50-50 that NASA's Space Launch System rocket will be canceled. Not Block 1B. Not Block 2. All of it. There are other ways to get Orion to the Moon.

Follow up to Scott Manley

The return of Bridenstein's Monster

https://x.com/SciGuySpace/status/1856538263915225194?s=19

Quote
My sense is that the solution would be launching Orion on one rocket (probably FH, from 39A) and then docking with a (separately launched) Centaur V and boosting it to the Moon.

"Bridenstine's  Monster" is actually reasonably elegant. The reason it never flew is because the entrenched bureaucrats and the space-industrial complex got together and gave birth to a hissy fit and threatened to cut Bridenstine off at the knees. It was - and remains - a really credible threat to the very existence of SLS/Orion. It has the very real potential to be the direct cause of the total cancellation of both of them in favor of a better architecture, for FAR less money and MUCH more frequent missions. What's not to love? Unless you're one of the greedy, blood-sucking members of the bureaucrat/space-industrial complex that needs its milking spree on the USGov teat.

And let's not forget that Dragon's heatshield material (PICA-X) is specifically designed to protect the spacecraft from the heat of reentry from a lunar (or interplanetary) return at 11 kms (25,000 mph). The minute SpaceX demonstrates  such a return, Orion's future becomes very, very cloudy.
« Last Edit: 11/13/2024 04:32 pm by clongton »
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Offline sdsds

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Re: SLS General Discussion Thread 8
« Reply #1112 on: 11/13/2024 11:43 pm »
Regarding another (hardware rich) launch system there's been a line of thinking that the most efficient way to dispose of excess vehicles is to launch them. I wonder if that also applies to SLS and its components, particularly the ones for Artemis II? If so, why not start stacking the SRBs now? Worst case scenario: it flies its current profile without a crew and some valuable real-world data is gleaned from the Orion heat shield performance.
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Offline Coastal Ron

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Re: SLS General Discussion Thread 8
« Reply #1113 on: 11/13/2024 11:57 pm »
Regarding another (hardware rich) launch system there's been a line of thinking that the most efficient way to dispose of excess vehicles is to launch them.

That would be the most costly method. And the most dangerous.

Quote
Worst case scenario: it flies its current profile without a crew and some valuable real-world data is gleaned from the Orion heat shield performance.

Orion is likely the largest capsule spacecraft that can be used for Earth, and no one should ever try to build one the same size. So there is nothing to be learned from how Orion's heat shield holds up, if there are no more Orion missions.
If we don't continuously lower the cost to access space, how are we ever going to afford to expand humanity out into space?

Offline deltaV

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Re: SLS General Discussion Thread 8
« Reply #1114 on: 11/14/2024 02:07 pm »
Worst case scenario: it flies its current profile without a crew and some valuable real-world data is gleaned from the Orion heat shield performance.

If NASA did hardware-rich development each failed launch would be a mini scandal - someone messed up and cost taxpayers on the order of a billion dollars. NASA may choose hardware-poor development because it minimizes scandals despite it being objectively worse due to high costs.

Offline DanClemmensen

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Re: SLS General Discussion Thread 8
« Reply #1115 on: 11/14/2024 02:52 pm »
Regarding another (hardware rich) launch system there's been a line of thinking that the most efficient way to dispose of excess vehicles is to launch them. I wonder if that also applies to SLS and its components, particularly the ones for Artemis II? If so, why not start stacking the SRBs now? Worst case scenario: it flies its current profile without a crew and some valuable real-world data is gleaned from the Orion heat shield performance.
The only real goal of the SLS and Orion programs is to pour taxpayer dollars into the appropriate corporate coffers. The corporations spend a visible percentage of this money on salaries in the appropriate zip codes. All other goals are at best secondary, but building SLS and Orion components is also visible. To justify building the components, they are forced to actually launch them often enough to show that they are actually doing something. To meet this goal, they need plausible-sounding missions. It does not really matter what these mission do as long as they expend SLS and most of Orion, although it's better if the missions can be claimed to be "successful".

This model has broken down. They have only managed to launch once so far, instead of the three or more missions planned, and Artemis I was not really "successful" enough due to the Orion heat shield problem. This failure is delaying Artemis II, which is causing congestion in the money pipeline.

Offline sdsds

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Re: SLS General Discussion Thread 8
« Reply #1116 on: 11/14/2024 09:47 pm »
Regarding another (hardware rich) launch system there's been a line of thinking that the most efficient way to dispose of excess vehicles is to launch them.
That would be the most costly method.

If I understand you correctly, you mean disposing of the Artemis II hardware by launching the mission would involve a large outflow of dollars from the US Treasury. That's a reasonable measure of cost, and yet it doesn't include gain or loss of intangibles like national prestige and soft power.
Nor does it include costs carried by entities other than the US Treasury. Abrupt project cancellations can impose painful losses on the associated workforce, and slow the local economies their households support. Both the current Senators from Florida have been much in the news recently, and would presumably be sensitive to those costs.
A slower transition phasing out SLS by launching Artemis II (and possibly even Artemis III) would preserve some amount of national prestige (prevent some amount of national embarrassment) while providing the workforce and the local economies a smoother transition to the new reality.
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Offline DanClemmensen

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Re: SLS General Discussion Thread 8
« Reply #1117 on: 11/14/2024 10:33 pm »
Regarding another (hardware rich) launch system there's been a line of thinking that the most efficient way to dispose of excess vehicles is to launch them.
That would be the most costly method.

If I understand you correctly, you mean disposing of the Artemis II hardware by launching the mission would involve a large outflow of dollars from the US Treasury. That's a reasonable measure of cost, and yet it doesn't include gain or loss of intangibles like national prestige and soft power.
Nor does it include costs carried by entities other than the US Treasury. Abrupt project cancellations can impose painful losses on the associated workforce, and slow the local economies their households support. Both the current Senators from Florida have been much in the news recently, and would presumably be sensitive to those costs.
A slower transition phasing out SLS by launching Artemis II (and possibly even Artemis III) would preserve some amount of national prestige (prevent some amount of national embarrassment) while providing the workforce and the local economies a smoother transition to the new reality.
It would be a lot cheaper to find a way to provide federal impact money to the affected people and communities.  Objectively, a plan to terminate the programs makes it clear that the work being done has negative value, so simply continue to pay all of the workers and tell them to stay home. Sadly, this is politically unacceptable.

Offline Coastal Ron

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Re: SLS General Discussion Thread 8
« Reply #1118 on: 11/14/2024 11:40 pm »
Regarding another (hardware rich) launch system there's been a line of thinking that the most efficient way to dispose of excess vehicles is to launch them.
That would be the most costly method.
If I understand you correctly, you mean disposing of the Artemis II hardware by launching the mission would involve a large outflow of dollars from the US Treasury.

Well, the U.S. Treasury manages the money, but the money is from U.S. Taxpayers.

Quote
That's a reasonable measure of cost, and yet it doesn't include gain or loss of intangibles like national prestige and soft power.

Can you measure national prestige or soft power? Can you convert it to USD? Because unless there exists such a conversion, there is nothing to discuss regarding national prestige and soft power.  ;)

Quote
Nor does it include costs carried by entities other than the US Treasury. Abrupt project cancellations can impose painful losses on the associated workforce, and slow the local economies their households support. Both the current Senators from Florida have been much in the news recently, and would presumably be sensitive to those costs.

But both Senators are NOT sensitive to the $25B spent on the SLS program, that is pretty much a waste of U.S. Taxpayer money. Me thinks you are not making your point here...

Quote
A slower transition phasing out SLS by launching Artemis II (and possibly even Artemis III)

Beyond "national prestige and soft power", what is the ROI for the U.S. Taxpayer? Because you have yet to prove that there is any ROI regarding national prestige and soft power by launching the an SLS. Could end up being an embarrassment, right?

Quote
...would preserve some amount of national prestige (prevent some amount of national embarrassment) while providing the workforce and the local economies a smoother transition to the new reality.

EVERYONE in the world knows the SLS is an embarrassment to the U.S. now that a Starship booster has been caught. So nothing to avoid there.

And if you want to make things better for the workers, then isn't that what Congress does with their laws on unemployment insurance? If Congress really wanted to make job loss less painful for workers, then they could fix the current system so that you don't lose healthcare benefits when you lose your job, but Republicans have traditionally been agains that.

So sounds like Congress can stop throwing money at Boeing, and protect workers that lose their jobs. They just need to do the right thing - what they should have done decades ago.
If we don't continuously lower the cost to access space, how are we ever going to afford to expand humanity out into space?

Offline sdsds

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Re: SLS General Discussion Thread 8
« Reply #1119 on: 11/15/2024 12:51 am »
I wrote Treasury because that's what I meant. How public sector expenditures are financed is probably beyond the scope of this discussion. For those curious, the detailed numbers are worth looking at.
https://fiscaldata.treasury.gov/datasets/daily-treasury-statement/operating-cash-balance
(And see the attachment for today's statement.)

As for the notion that anyone needs to "prove that there is any ROI regarding national prestige and soft power," that same could be asked for the entire NASA budget, not just expenditures to launch an SLS or two.
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