stetrain

25 ms·

451.
by stetrain 2y ago
It's a rocket in the same ballpark as the Saturn V but where the two stages can both be recovered and re-used. SpaceX has demonstrated being able to fly the same rocket stage dozens of times with minimal refurbishment with their Falcon
452.
by stetrain 2y ago
If we want to establish long term bases on the Moon or Mars then yes, you need not only to send crew and habitation modules but ongoing supplies and equipment. Other use cases include launching and maintaining satellite constellations (Star
453.
by stetrain 2y ago
Yep. That's roughly 20% per generation improvement which ain't half-bad these days, but the really huge cliff was going from Intel to the M1 generation. M1 series machines are going to be fine for years to come.
454.
by stetrain 2y ago
The topic is also a specific article about that transition year. I don't think that commenting about an article being particularly well-written, easy to understand, or having nice examples would be against the guidelines here. If discu
455.
by stetrain 2y ago
I wouldn't call the quality and readability of the written text "tangential", it's not about the CSS styling. I don't think it's quite as bad as the above commenter seems to think it is, but they're welcom
456.
by stetrain 2y ago
> Could it be that since this device is only $650 USD It's $499 USD. And if it's like the previous gen it will be on sale for $399 in a year or so.
457.
by stetrain 2y ago
Yeah. It wasn't planned, but was a likely outcome. I'm not sure if they would have actually attempted to tow this one somewhere given its location in the Indian Ocean, but they might have taken the opportunity to do some inspectio
458.
by stetrain 2y ago
You could build a larger re-usable rocket that could launch this payload and still have margin for recovery, such as the in-development SpaceX Starship. However for this type of mission that would still leave the question of "What if w
459.
by stetrain 2y ago
This presumes that an additional SLS rocket would have been completed and ready to launch in the same timeframe as this launch on Falcon Heavy. From what I have seen of the SLS program I think that is an unlikely scenario.
460.
by stetrain 2y ago
FYI that first link is showing a previous, larger, concept iteration of Starship (then known as ITS) which would have had a 12m diameter, versus the 9m version that SpaceX ended up building. The second link seems to show a version of Starsh
461.
by stetrain 2y ago
So you don't consider Elon Musk to be part of the engineering team at SpaceX?
462.
by stetrain 2y ago
> That they will probably get to 0 cases. (he was wrong, but this prediction was made fairly early on when the data looked like this: This was an incorrect interpretation of data that did not account for reporting lag in case numbers, wh
463.
by stetrain 2y ago
> It's possible that SpaceX programed the AFTS to trigger some time after the rocket touched down in the water. Just to make sure that it completely submerges quickly. The SpaceX host on the stream said that they were going to try a
464.
by stetrain 2y ago
This was “actual facts” that came to light later? https://x.com/elonmusk/status/1240754657263144960?lang=en
465.
by stetrain 2y ago
https://x.com/elonmusk/status/1240754657263144960?lang=en https://www.theverge.com/2020/3/20/21187760/twitter-elon-mus... https://amp.cnn.com/cnn/2020&#x2F
466.
by stetrain 2y ago
In the video you can see the engines light (reflecting off the metal control flap and water) and the ship make a soft touchdown on the water. It then tips over and the tanks pop from the force of smacking the water sideways. So the landing
467.
by stetrain 2y ago
Here’s a video from a farther vantage point that gives a better perspective on the landing process: https://x.com/shaunmmaguire/status/1845444890764644694
468.
by stetrain 2y ago
https://x.com/SenBillNelson/status/1845461454977196294
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by stetrain 2y ago
Yes, for most of the booster return it’s ‘gliding’ with the rocket engines completely shut down. They ignite a subset of engines just a few seconds before landing for the final slowdown and maneuvering. Edit: here is a video from further aw
470.
by stetrain 2y ago
This booster is significantly larger than anything landed on an orbital launch before. Here is a size comparison, previous largest landed orbital rocket stage is the SpaceX Falcon 9 (three of them launch together as Falcon Heavy) on the lef
471.
by stetrain 2y ago
Because the rocket weighs a small fraction of what it did at launch, specifically because it only has 2-3% fuel left. Fuel is the vast majority of the vehicle weight at launch, kind of like an empty vs full can of soda.
472.
by stetrain 2y ago
We don't know how profitable it is. They're already running out of folks willing to pay $100k and have begun offering the $80k version. Will that version be profitable to build? It takes more than unit sales to make a good busines
473.
by stetrain 2y ago
So the announced price for the ~300mi, dual-motor version in 2019 was $49k. Today that price is $79k. ($99k if you want the first-edition Foundation series which has been the only one delivered to customers so far). CPI inflation calculatio
474.
by stetrain 2y ago
Tesla previously announced that all of their cars had the hardware for Level 5 Self-Driving in 2016 and would be capable of driving fully autonomously within 2-3 years. This isn't just a bait and switch, it's a new bait and swit
475.
by stetrain 2y ago
Rivian's delivery numbers include the R1T pickup, the R1S SUV, and their EDV delivery van for Amazon and other fleet customers. The R1T pickup is likely half or less of their total production number.
476.
by stetrain 2y ago
Paying for a full-service crew launch service including ground handling for payload and crew, space suits, life support, docking, and retrieval of the crew/capsule on landing is very different than paying for kg of payload launched to
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by stetrain 2y ago
Because a close fly-by probe is something we know how to do, and is a much more affordable and achievable goal than a mission that would have the true goal of confirming life on Europa. Such a mission would involve landing on an outer solar
478.
by stetrain 2y ago
I haven’t said anything that disagrees with that. Might want to re-read my comment above in this thread.
479.
by stetrain 2y ago
As far as I know in this case both sides have already attacked each other via bombs, airstrikes, rockets, etc. I'm not really making a judgement on whether this was ethical or justified. There's just a distinction to be made from
480.
by stetrain 2y ago
A lot of the new manufacturing isn't going to the states that specialized in manufacturing previously. A lot of the boom in EV and battery production is happening in the US southeast (Alabama, Georgia, South Carolina). The TSMC factory

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