CatastrophicFailure
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Posts posted by CatastrophicFailure
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19 minutes ago, mikegarrison said:
Earth EDL has been a "solved" issue since the 1960s, but landing on Mars has still never been easy. Starship still loses most of its orbital energy by aerobraking, and that's still a problem on Mars, so "relatively" is doing a lot of work there.
“Solved” wrt to Starship and its reuse is the context here. SpaceX will be getting plenty of data from a similar atmospheric regime (hypersonic/translunar speeds in the upper atmosphere), enough to extrapolate to Mars, so it’s not reinventing the wheel, either. We’ve already seen from some of their earliest BFR renders that they already have some idea, carbon-Starship is shown flying a Mars entry inverted at times, using aerodynamic lift to actually hold itself down in the atmosphere. So, it’s an extension and further optimization of work they’re already doing.
1 hour ago, darthgently said:fail to grasp the value of pretending that ppl far from the problem and zero skin in the game have much of value to contribute compared to SpaceX. These ppl, in fact, have vastly less to contribute and are far less motivated to have accurate views on a problem such as this even if they had access to every byte of test data.
Dunning-Kruger…
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20 hours ago, JoeSchmuckatelli said:
Cart?
Meet Horse!
Horse?
Push!
- not that I don't recognize the promise... But they're going to have to crash 3 into the moon (at least) before landing there, then 3 into Mars before landing (hopefully AFTER deployment of several Starlink constellations) and then figure out ISRU and...
...
Big dreams. 2040? Might buy 2035 if we see Moonshot by 2028.
I would say no, not at all. Once Earth EDL is solved, which they are very near to now, and which is necessary for both Earth and lunar operations, extending that to Mars EDL will be a relatively simple problem. Long before they ever start bending metal for such a mission, they will already have LOADS of data on how Starship handles during a similar entry regime. And now that no mishap report is (likely to be) required for IFT-4, I think we’re going to see the pace of development rapid ramp up, then again after the first successful catch, then again after the first reuse. Just like HLS, a Mars sample return is a natural and “easy” extension of stuff they’re doing anyway.
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9 hours ago, Ultimate Steve said:
Starlink is at nearly 3 million users
Fwiw I’ve had Starlink for a couple years now, still waiting on that reliable 3G cell tower, let alone 5G…
Also outta likes so…
6 hours ago, JoeSchmuckatelli said:The above from Max Fagin on Xitter
Only 1.5G? That is very gentle for a reentry!
(Looking at you, Hubble.)
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10 hours ago, Minmus Taster said:
Why are we not losing alttitude?
Out of likes : (
Lots of plasma, yikes
Because it’s really and truly flying.
Also keep in mind this descent would otherwise be much steeper, it’s only 3/4 of an orbit with perigee below the surface somewhere around Hawaii. On a “normal” trajectory that pe would still be above the surface, so this crazy reentry may be even more punishing than “usual.”
10 hours ago, AckSed said:"Did the primary buffer panel just fall off my gorram ship?"
Of all the posts to run out of likes on…
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On 6/5/2024 at 12:37 PM, Terwin said:
As of yet, no starship has been lost due to loss of a tile.
Welp… seems this adage stubbornly clings to truth… kinda like that fin…
holey—
9 hours ago, JoeSchmuckatelli said:Oh yeah - watching the booster telemetry go from over 4,000 km/h at 20 km altitude to less than a thousand at 1km before lighting the rocket and then the hoover was amazing. The physicality of all that - wow!
Our brains are all still locked to meters per second, not kilometers per hour. The mental translation takes a minute.
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9 hours ago, DDE said:
N-1 cancellation order, 1974
Is there a translation somewhere?
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“Still Reading the Instructions.”
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Missed a golden opportunity here to call it New Evergiven, New Billy O’Tea, New Istanbul-Not-Constantinople, anything better.
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23 hours ago, DDE said:
Indeterminate space junk reentry over Elista
Seems to have been a Starlink.
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45 minutes ago, tater said:
Yeah, that showed. I changed nothing. Seems like it could not have been an X glitch, since it worked from phone, but not desktop.
I’ve found that to make it work, you have to copy the link from the little “copy link” icon, then paste it into a browser tab, then copy that link from the status bar and paste it here. You have to wait for it to pop up in the forum window before hitting “submit” too.
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18 hours ago, Kimera Industries said:
I am so deeply disturbed on so many levels.
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20 minutes ago, DDE said:
Why do you have the exact same reaction as my coworkers!?
Are they perhaps vertically challenged and six in number with oddly descriptive names?
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28 minutes ago, DDE said:
I did not know [bird name censored] could hover...
You’re a regular Didney princess.
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20 hours ago, Ultimate Steve said:
Today I graduated with a bachelor's degree in aerospace engineering! I thought more people would decorate their caps. I'm on mobile so I can't easily post pictures but I'll post when I get home and unpacked.
Shameless plug: I don't suppose anyone here is part of a company looking for a new grad with satellite testing, integration, and programming experience?
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1 hour ago, Jacke said:
This isn't a problem that is best characterised by anecdotes. This is best characterised by statistics and examining the details and intensity of the failures.
Respectfully, you say this, and then anecdotes are exactly what you offered. Here’s a statistic: EV fires are ten, eighty, even a hundred times less likely to occur in the first place. Even if they are more likely to be “catastrophic” (however you’re defining that), that catastrophe is still less likely to occur. By your own statement (brine solution, etc) it’s already a solved problem, it just requires different tactics and equipment. Such is the evolution of fire response from the beginning (fighting a massive fuel spill/fire also requires special tactics and equipment).
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On 5/5/2024 at 7:34 AM, Terwin said:
In spite of movies, shooting a can of gas will not cause an explosion.
Having a battery-pack land on a sharp rock or bit of metal will likely cause a chemical fire that will destroy the entire battery facility.
Just plugging in a damaged or faulty battery pack could do the same.
Also, Batteries and tires are the two most wear-sensitive parts on a BEV, and who wants to get an 'old' pack with only 2/3 the range of their brand new pack?
Your information here is incredibly out of date. I can’t speak for other mfrs but a Tesla battery can take a significant amount of damage and not catch fire, as each cell is thermally isolated from the others. Here’s a Model 3 battery that went sideways into a tree, did way more damage than “landing on a sharp rock,” and didn’t catch fire.
And speaking of landing on a sharp rock, you hear about the Model Y that was deliberately driven off a cliff, and not only did it not catch fire despite all the sharp rocks, everyone walked away?
Also, the battery of any Tesla made today should last the life of the vehicle, and then some. An “old” pack just isn’t going to see that kind of degradation, any more than a gas engine (which also loses efficiency with age). I can post the graph if you want, I bought my first Model X used with 36k miles, sold it 40k miles later. Over that time my degradation was completely flat, I lost no meaningful amount of range. It used to be that EVs would see a sharp drop of around 10% in the first year, leading to this myth, but degradation then tapers off to little to nothing. Even that no longer seems to be the case with newer vehicles with better battery management.
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3 hours ago, tater said:
Will be interesting to see what PLSS they come up with for untethered EVA suits (this mission has an umbilical).
Jet pack incoming.
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Good article with some equally interesting discussion down in the comments. TL:DR due to potential delays with Starship, Orion’s heat shield, et al, NASA may be considering an Apollo-9-esq mission of putting Orion into LEO to dock with a stripped-down Starship for habitability and other tests.
Or, if you believe the conspiracies, a “camel’s nose under the tent” to obviate SLS entirely…
Spoileriwanttobelieve.gif
derp… here’s the article…
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On 4/15/2024 at 2:29 PM, Ultimate Steve said:
Given the MSR news... I'm not saying this is a good idea and I'm not saying it will happen, but proposing a manned Starship mission to complete Mars Sample Return is a completely on brand thing for SpaceX to do.
Would be quite the plot twist but the 21st century of space exploration has been filled with so many plot twists already that I doubt anything would surprise me at this point.
Only if they bring back Spirit & Opportunity too.
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12 hours ago, darthgently said:
That would be a very large, and massive pallet. If the sun were directly overhead one could easily get a momentary nice eclipse effect with boat positioned directly underneath it.
For anyone else who’s brain absolutely will NOT let them rest until this useless knowledge is known…
that wood be a pallet approximately 135x82x11ft and weighing 18,750 tons, and is either half the annual production of pennies or all the pennies in circulation as of 2012 depending on which nonsense interwebz source you trust.
so yeah, splash. BIG splash.
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Finders keepers.
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7 hours ago, SunlitZelkova said:
Not sure how to get better information than articles actually interviewing Tesla owners…
No, I did not simply read the headline and take it as fact.
It is highly unlikely this was a politicized article. I didn’t clarify in the original post, but the article stated this was happening to ALL electric cars, not just Teslas.
I think the idea of any electric pickup truck- Cybertruck or any future attempts from Ford- are not going to be good ones.
Cybertruck is actually different insofar as it isn’t necessarily billed as a replacement for farm equipment. For urban citizens it should be just fine. It’s only in freak weather it would have issues.
Sadly, nothing related to Tesla is ever unpoliticized for free from bias, either way. Such articles are nearly always missing important context, like the fact that most of the people caught in that mess hadn't bothered to precondition their cars prior to going to charge, which makes a huge difference. Or mention all the people who can't start their gas cars due to... dead batteries. Note you don't hear about issues like this in places like, say, Norway, or even Minnesota, where such subzero (F) weather is fairly normal and people know how to handle it. There's more than that, of course, so if you really want to discuss it I'd suggest taking it over to the relevant Tesla thread.
22 hours ago, AlamoVampire said:Summer burns. The first thought is a trauma response to the burns these things gave. because i know no kid my age that does not know this burn. Cybertruck is no difference. Now before i rant more im out.
Now that you've ranted, how about listening?
It's hit over 100 a few times here, but I've never had to get into a burning hot car, because it's always cooled down remotely by the time I get in there.
Also, nudge nudge...
11 hours ago, magnemoe said:How does this happen? Yes i know the redneck grill idea of tipping an shopping cart over, make an bonfire inside it and use the upper side as an grill as grilled on them. But this is an plastic one and it looks like the kid was kind of hot.
Er... socioeconomic factors and, shall we say, heavy use of alternative pharmaceuticals...
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On 4/5/2024 at 7:09 PM, SunlitZelkova said:
Teslas had a lot of problems in the Great Lakes and Northeast when the winter storms hit in January, IIRC.
On 4/5/2024 at 7:16 PM, AlamoVampire said:@SunlitZelkova the cyber truck has a terrible crash rating and where i am regularly reaches 100+ degrees
I’m just gonna say this: if you truly wish to have an informed opinion about Teslas in X climate, or anything really, listen to people who actually own them, not what some rando on social media or newscaster sensationalizing for ratings/clicks says.
Also keep in mind this descent would otherwise be much steeper, it’s only 3/4 of an orbit with perigee below the surface somewhere around Hawaii. On a “normal” trajectory that pe would still be above the surface, so this crazy reentry may be even more punishing than “usual.”
What funny/interesting thing happened in your life today?
in The Lounge
Posted
Got a new toy. Puppy approves.
…sort of.