dotnet00

52 ms·

661.
by dotnet00 2y ago
Starship HLS can lift much more than 50kg, but since Congress/NASA requires Orion to be the return vehicle, the amount they can return is limited by that, which only has a 100kg payload return capacity (and presumably a chunk of that i
662.
by dotnet00 2y ago
F-1 was a design based around the limits of its time. The engineers were concerned about the challenges of controlling a large number of smaller engines, plus concerns about reliability with large numbers of smaller engines. It also had to
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by dotnet00 2y ago
Last month NASA stated at a meeting that SpaceX had successful propellant transfer: https://spacenews.com/spacex-making-progress-on-starship-in-... "On Flight 3, they did an intertank transfer of cryogens, which was su
664.
by dotnet00 2y ago
I think the point they're trying to make is that it looks the same for the sake of looking the same.
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by dotnet00 2y ago
SLS cannot get from the ground to the moon and back with just the one rocket. Orion is too heavy to land and return from the Moon. That's why the plan, even before Starship's involvement, was to transfer from Orion to the lander i
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by dotnet00 2y ago
That was on-orbit refueling of hypergolic propellants, which is already done regularly on the ISS and is conceptually straightforward since you can just use bladder tanks to do the transfer without any special considerations. What hasn&#x27
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by dotnet00 2y ago
>NASA still can’t take humans to/from orbit on its own They can buy seats on Crew Dragon though?
668.
by dotnet00 2y ago
It'd do you well to read before making a fool of yourself. Everyone who's been paying attention to space stuff is aware of the mentioned issues. The fact is that NASA's hands are tied, they literally are not allowed to cancel
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by dotnet00 2y ago
Why are you spending your time and money posting here? Focus on providing every human with access to clean drinking water, you can worry about social media after that.
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by dotnet00 2y ago
Given the amount of mass typically involved, probably just a mathematical curiosity, but if that's the only way we can figure out to try to understand the inside, maybe we'll eventually be able to generate microblackholes from tin
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by dotnet00 2y ago
From my understanding, that invokes the black hole information paradox. There should be some way in which the information of what went into a black hole is retained, a possible answer being with the Hawking radiation. We just don't kno
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by dotnet00 2y ago
The analyses leading to the loss estimates I mentioned were done in 2010, shortly before the Shuttle's retirement, due to recognition of the previously poor risk analyses. As is clear from the issues seen with Starliner, this normaliza
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by dotnet00 2y ago
The improvement is apparently due to the changes made in response to Challenger and Columbia https://forum.nasaspaceflight.com/index.php?topic=24392.0
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by dotnet00 2y ago
Whenever you think like this, it's useful to look into how modern efforts differ in more detail. Concorde was very loud and very fuel inefficient in an industry where efficiency is king, the modern struggle is not in achieving superson
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by dotnet00 2y ago
For starters, the test you mentioned happened in 2013, after making improvements, they successfully redid that test in 2017. Visiting the ISS does not involve the reentry capability, and being a test flight, on the journey back, they won&#x
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by dotnet00 2y ago
This is only if the position you're happy being at is static. You can be happy where you are in the sense that you know you're working in the direction you want to go. Say, someone who is content with working under a bad boss beca
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by dotnet00 2y ago
I disagree that the two are fundamentally at odds. If your goal is specifically to be a millionaire by 30, yeah, you're bound to be unhappy if you aren't near that by 29. But on the other hand, if you're more open minded abou
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by dotnet00 2y ago
Agreed. I'm just over halfway through my 20s, but this same realization has led me to finally just enjoying life a little. All my life so far has been spent constantly stressing over avoiding (potentially unknown) setbacks. I used to i
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by dotnet00 2y ago
Or even more commonly with astronomy, are misinterpreting the material to prop up their pop science influenced preconceived notions. I think everyone in the hard sciences has had some experience of having to deal with someone with no techni
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by dotnet00 2y ago
Known kind of by definition implies that it's based on our current knowledge.
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by dotnet00 2y ago
Similar issue, I have an old desktop as a server already to do all the heavy processing stuff. Only finally found use for RPi to be the brains of my 3d printers.
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by dotnet00 2y ago
Reminds me of the story from a few years ago where the US military was looking into scaring people via screaming balls of plasma, which gave rise to the joke that the CIA was trying to make religious extremists think their god was talking t
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by dotnet00 2y ago
Add in the time tested classic of simultaneously gaslighting the customers by claiming to be doing it for their own good.
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by dotnet00 2y ago
Yeah that was very weird, but was also probably more convincing to his target audience of people who've never lived in even another town let alone another country.
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by dotnet00 2y ago
I recall hearing that they added some sort of advertising into the streaming built into discord. Maybe they're intending to gradually expand that and make them more targeted. https://www.cnet.com/tech/discord-is-ad
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by dotnet00 2y ago
The 'huge government grants' thing is doing a lot of (excuse the pun) heavy lifting, as are launch facilities and ex-gov talent. The government is a customer on Crew Dragon, it's a government 'grant' if you consider
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by dotnet00 2y ago
It's more like a kid who is really proud that the current champion at their sport was an alumni of the same school. It's inspiring without doing any harm. Perhaps you're being too bitter about life if you think that the only
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by dotnet00 2y ago
I'd consider that to be implied. Put differently, the 'grain of salt' is that I consider the effects to be overstated, not non-existent.
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by dotnet00 2y ago
While I can understand that as a reason for not sending crew there, we didn't even send uncrewed landers. The result being that now our technology has changed so much that we have to relearn how to autonomously land there. If we had be
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by dotnet00 2y ago
That covers the cancellation of Apollo, but the fact that we didn't even put an uncrewed lander on the Moon within the 50 years in between is indicative of a lack of general interest, since we've had several presidents in these 50

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