antangil

joined 2 years ago
MODERATOR OF
[–] antangil@lemmy.world 1 points 2 weeks ago

SpaceX playing soccer with COPVs and then bolting them on the vehicle doesn’t feel like a more comforting answer but I agree it’s one I didn’t list. Not sure I understand why people would be rattling around inside the vehicle after a single engine test and then not re-running the single engine for a regression test.

/shrug, still you’re right. Unreported damage post-installation would totally do this, it’s just not a root cause I’ve seen. Would speak to a breakdown in safety culture for my folks, not sure what the safety culture looks like on the Starship line.

[–] antangil@lemmy.world 1 points 2 weeks ago (1 children)

I’ve seen that math and something like that could work. Elon turned off the spigot on falcon heavy launches to create a bigger market for Starship.

Blue’s lander aggregates in a manner similar to what you describe, as did NASA’s original government reference design.

The other thing you’re talking about is basically Gateway. You’re pitching (more or less) the NASA concept circa 2019. :)

[–] antangil@lemmy.world 4 points 2 weeks ago

Oh c’mon.

Cannot possibly spin “blew up randomly during test prep” as a positive outcome. They probably don’t know how not to build that specific one unless they happened to instrument the faulty prop system components - they know that it failed but likely not why or how to fix it.

All evidence points to Starship having a super-finicky MPS that fails on the regular… which probably means they’re chasing performance by removing mass from the MPS and tank structure… which means either this design doesn’t work (totally possible) or that the as-built performance falls short of what was promised.

If you want to stan for Musk, I guess everyone has a type and I’m not going to shame you over it… but blowing up during test prep is not a good news story.

[–] antangil@lemmy.world 2 points 2 weeks ago (2 children)

Maybe. Regardless, problem either in design or build.

Designing under-reinforced tanks indicates that the design can’t make payload and they’re cutting too far into structure allocations to make up for it.

Rupture could also be poor materials (sign of Boeing-style disregard for standards and safety) or a bad weld (same plus maybe training issues on the line). Means they’re running bad QA/QC protocols if the faulty material/construction made it to flight.

Chasing performance at the cost of safety sounds right down Musk’s alley.

[–] antangil@lemmy.world 2 points 2 weeks ago (1 children)

Honestly curious about that. Anyone around know what the impact is? May need to get a NASA scientist involved… oh, wait, they all are getting fired. /sigh

[–] antangil@lemmy.world 1 points 2 weeks ago

Hey methane is a viable fuel for lots of stuff, no shade - it’s got lots of benefits, way easier to manage than liquid hydrogen.

Now, if what you’re thinking about is nuclear… YES. We desperately need prop sources that aren’t locked to the rocket equation. Give me a hybrid NEP/SEP and I’ll try to colonize Mars.

[–] antangil@lemmy.world 3 points 2 weeks ago

Tough to really throw even partial blame for global warming on chemical propulsion launches. Funny thought, though. :)

Go fast and break stuff is a viable way to rapidly iterate inside a known box, which is really what spaceX did with dragon and falcon. NASA gave them a big head start - they more or less had an engine design, more or less knew how to build a gn&c (even for propulsive return), more or less knew how to build the sticks… just wasn’t efficient or cost-effective. Cutting bits off to see if the overall system still operates is kinda how the relationship between govt and industry is supposed to work.

Starship isn’t iterating inside a known box. It’s not a smarter cheaper version of existing tech, it’s a whole new thing that Elon just kinda spoke into existence. It must be fun to have that kind of money and power, but it doesn’t mean the idea will ever actually work - and this is where the deliberate, methodical process that NASA uses becomes more valuable.

What’ll be interesting is when SpaceX starts missing payment milestones. I think they’ve gotten some grace in the past. Not sure the current environment is as permissive. Wouldn’t be surprised if that’s part of why Elon wants to shift the goalposts to Mars - it’d give him more time to sort out some of the fundamental challenges with his concept.

[–] antangil@lemmy.world 8 points 2 weeks ago

Feeling very conflicted about this. Glad the folks are safe. Worried about the implications for Artemis III and the agency. Pretty sure every failure so far has been in the prop system, which is troubling given that the whole strategy for Starship requires extraordinary advancement in prop transfer technology.

Hard to deny a bit of schadenfreude for Elon taking it in the shorts again. Curious if his antics have had morale implications in SpaceX that are helping to generate misses.

A reminder for folks that starship is only viable if they can routinely execute autonomous in-space cryogenic fuel transfers. This explosion appears to be the result of a problem in human-executed on-Earth cryogenic fuel transfer.

 

…your guess is as good as mine this time folks. 😵‍💫

[–] antangil@lemmy.world 2 points 2 months ago* (last edited 2 months ago) (1 children)

The president proposed cutting Artemis after Artemis III. Congress hasn’t yet agreed, so there’s a lot more to go and it wouldn’t affect the Artemis II launch.

 

The Planetary Society is attempting to rustle up support for NASA after the remarkable message sent by President Trump’s budget.

Whether it helps depends a lot on your rep, but they’ve made it pretty straightforward to call or send a note in support of NASA’s mission.

[–] antangil@lemmy.world 6 points 2 months ago (1 children)

I could be talked into Europe. Not so sure about Beijing. Folks that might be willing to go to china (at least in my neck of the woods) get weeded out pretty quick.

[–] antangil@lemmy.world 5 points 2 months ago

It’d require an Apollo-level investment and I think Europe is gonna be focused on more prosaic concerns.

I don’t think a brain drain is avoidable and I don’t think it’s undesirable for the current administration. Keeping a strong civil servant workforce doesn’t seem like a priority.

[–] antangil@lemmy.world 5 points 3 months ago

I think honestly it’s not just the conflict of interest threat that warrants someone in public office divesting themselves. We’re seeing that it’s better for the companies too - keeps them insulated from the impact of unpopular decisions.

 

I’ve got no clue how many people this will turn out to be, but I’ve heard a fair pile of corroboration.

I’ve wanted to work at NASA since I was six. That’s a common story at the agency - most folks have to work hard and make conscious decisions from high school on to get there. The folks I’ll be saying goodbye to on Tuesday are literally the best and brightest of their generation - people with brains and determination that chose to take worse pay and underfunded lab environments to serve their country and have arranged their whole lives to make that sacrifice possible.

I mourn for them, for the agency, and for the future they could have given us.

 

I am really sad that those 800 people are feeling the same thing that the govvies are. The folks on the chopping block were not the ones responsible for the problem. In my opinion, plan should be to keep the engineers, lose the suits.

 

Can confirm.

 

Petition granted.

Here’s the plan. For a period of two weeks, this post will be stickied. During that time, anyone who wants to can submit a banner or a community icon or both. Requirements are below. Submissions that are not compliant but are really cool may be granted a waiver at the discretion of the mod, but don’t test me.

I will not permit this to become a shitshow. I have not yet thought about what to do with someone that posts content with the intent to troll or make anyone uncomfortable. I would prefer not to have to think about it. My kids would tell you that statement is one of my most dire warnings.

Requirement - Banner Size: Banner proposals shall be in a resolution of 2040x500 with a maximum size of 100kb. Rationale - that’s the biggest number people are giving on the Internet best I can tell, so I can crop it if I need to.

Requirement - Icon Size: Icon proposals shall be in a resolution of 512x512 with a maximum size of 100kb. Rationale: Same as above.

Requirement - Standards Compliance: Use of official NASA logos or logotypes shall meet the intent of the relevant NASA guidance: Brand Guidelines Rationale: I’m capricious, I guess.

Requirement - Positive Vibes: Submissions shall be positive in nature and focus on contributions of the agency to the world. Rationale: Let’s not focus on the short-term nonsense. Overall, it’s a positive mission with positive benefits and some really cool outcomes so let’s try to keep the overall sense of things in line with that. As an example, anything specifically referencing the current personnel actions will not be accepted.

Requirement - A Good Effort: Submissions shall have a high level of graphic quality and composition as determined by the moderator. Rationale: No stupid MSPaint drawings, we’re better than that. Give me something I can use. If art just isn’t your thing, that’s okay - give it your best shot and explain what you’re doing. I’m actually pretty good at this kind of stuff and I’ll help if it’s a good concept.

Requirement - Broad Message: Banner submissions shall communicate the diversity of NASA’s mission. If any reference to a specific mission is made, references must be made to missions from multiple directorates. If any reference to a person is made, references must be made to a range of people that accurately indicate the makeup of the agency and of the population that agency efforts inspire. Rationale: Big agency, I’m sensitive to it being portrayed as all about Moon 2 Mars. Generic rocket launches (as long as they aren’t SLS) don’t count. The people thing I hope y’all understand. I will give exemptions for obvious reasons, but try to meet the intent.

Requirement - No Nazis: Submissions shall not reference the likeness, words, or results of work done by Nazis or Nazi sympathizers. Rationale: There was a time I wouldn’t have needed to say this. I know the troubled history of NASA’s beginnings, not sweeping it under the rug, but let’s focus forward for the banner shall we? I consider SpaceX to be run by Gwynne Shotwell, so SpaceX stuff is explicitly acceptable and I don’t want to hear any complaints about it. Specific reference to the CEO of SpaceX will be handled on a case-by-case basis. Please refer to the “positive vibes” requirement. Please refer to the “no shitshow” policy statement. Please don’t make me regret doing this.

Requirement - Top Level Submissions: All submissions shall be top-level comments to this post. Rationale: It’ll make my life easier. All top-level comments that are not submissions will be deleted. I will add a top-level comment to collect meta-discussion.

Requirement - Voting: The community moderator shall collect all compliant submissions and post them in a poll for community feedback. Rationale: I don’t want to have to interpolate from upvotes. Too much work. I’ll post a poll for voting when the submission period ends.

Ok. Let’s see what you’ve got. :)

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submitted 5 months ago* (last edited 5 months ago) by antangil@lemmy.world to c/nasa@lemmy.world
 

IYKYK. We’re under a continuing resolution, so it’s not like there’s any money for buyouts, it’s not possible to pay what they’re proposing. It’s not severance, nothing about you getting to stop working but still getting paid. Be very thoughtful, talk to your union reps if you’re in a bargaining unit. Nobody be rash.

Edit: Link for interested folks - Reuters article

 

So… things are getting strange and unpleasant and unpredictable. I’m excited about discussion in the sub, good with disagreement, I think I’ve deleted like 2 comments in the whole time I’ve been here. Say what you want, by and large. But… I’m going to ask folks to assume positive intent and refrain from personally attacking folks. Not usually a problem here, honestly it’s pretty quiet, but I’m getting the feeling that quiet isn’t in the cards for the next few years.

Same rules that (usually) apply at the agency - you can disagree passionately, but ultimately we’re all on the same team and working towards a common goal.

Every once in a while the name in the news post is someone I know that’s being put in a really shitty position. Appreciate y’all understanding.

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