StrandedonEarth
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Posts posted by StrandedonEarth
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1 hour ago, darthgently said:
I'm more concerned about the electrical infrastructure. Not the charging stations, that is easily solvable, but the grid itself. Just the raw cost of required grid transformers to support EVs as the majority is daunting. Much less installing them and upgrading capacity in general. I think every charging station cluster could have it's own pebble bed reactor to address this
Well, probably not a cure-all, but localized storage (buffer batteries) and PV-covered parking lots (and/or wind where suitable) can go a long way towards slowing down the need for grid upgrades
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30 minutes ago, Jacke said:
Battery pack relatively rapid wear and tear will also likely foul establishing battery pack swaps as an evenhanded service, if the very large technical and safety issues are managed. What company providing battery pack swaps will want to give away a new battery pack for one of uncertain age and performance? What car owner will want their newer battery pack swapped out for one--again--of uncertain age and performance?
Battery-as-a-service. You don't own the (swappable) battery, you lease/rent it. Depreciation is built into the battery owner's business model; besides, LFP battery cells are much more durable and much less prone to thermal runaway issues. Refueling a rentable ICE generator or fuel cell module (for recharging the permanent battery) would be no different than changing a propane-type cylinder or filling a jerry-can.
Battery-swap systems are already operating in China. China's Nio Lets EV Drivers Swap Battery Quick and Hit the Road (caranddriver.com).
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15 minutes ago, PakledHostage said:
A friend of mine works for a company that makes fuel cell transport vehicles (busses and trucks). Their design basically works as I have described. The fuel cell provides electricity for the vehicle's electric motor via a battery buffer. Those vehicles can drive off the battery alone; the fuel cell just augments the range. If I could buy a car with that concept that's big enough for my family, I'd buy it tomorrow. I instead, I wait and hope.
I still think the optimal concept would build off of battery-swap tech. Have a smaller built-in commuter-range battery coupled with a flexible, standardized swap bay that can hold a swappable module that can be a cargo tote, another battery, or some sort of generator or fuel cell, as needed.
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There was an article, either in this thread or the Science News thread, about tickling, but I was unable to search it up. Basically, it’s known we can’t tickle ourselves (the soles of the feet may be an exception, imo), but it was also noted that tickling yourself also makes you resistant to someone else tickling you at the same time.
This info has been very useful, since my wife enjoys tickling me, which drives me nuts and not in a good way. Now I can tolerate it once I can set up my defence, much to her disappointment and my relief
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Another routine launch, first one I've had the opportunity to watch in a while. I just put it on while watching the Make-Me-Laffs force Game 7. The game ended as the booster was coming in to land.
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What a plumbing nightmare. Dev version, I hope...
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7 hours ago, Flavio hc16 said:
For example, it is only thanks to the inspector general's office that the public finally got a full accounting for the cost of a single Space Launch System and Orion launch—$4.2 billion. NASA, for years, obscured this cost because it is embarrassingly high in an age of increasingly reusable spaceflight.
Ouch!
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I suppose the most amazing part is that these last two twentieth launches were for customer payloads, not starlinks…
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27 minutes ago, DDE said:
That's either a Lancet in a very strange disguise, or someone is having way, way too much fun with a model airplane.
Or model rocket, possibly. My brother had one back in the 80’s…
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41 minutes ago, PakledHostage said:
Coming May 15th, for the Lego/Artemis lovers here:
Well, the scope and scale is certainly impressive, and I imagine it costs about as much too…
Lego should put out cheap sooty Falcon 9 kits with all pieces except payload having been previously used …
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A classic medevac chopper:
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Legendary hockey play-byplay announcer Bob Cole has died at age 90
Bob Cole, the play-by-play voice of countless NHL games, dies at 90 | CBC News
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18 minutes ago, SunlitZelkova said:
Let’s say there is a limited nuclear war. Military sites and major cities are hit by ICBMs, but bombers are called off mid-flight and only a few SLBMs are launched before a ceasefire is agreed upon.
High tech factories were destroyed in the cities they were in, but rural fossil fuel industries remain intact.
What is the best option for restoring power to the country during recovery?
I was thinking about this in the shower and wondering if survivors of a nuclear war would ever be able to have hot showers again.
Would coal be the most viable route for a quick recovery? I’ve heard China has mastered building them pretty quickly.
Or would renewables like solar and wind make sense, if countries that have industries for producing such infrastructure escape the war unscathed?
Solar hot water is fairly easy, as long as you have something black and watertight. Wind generation requires less tech than solar PV, although concentrated solar thermal would be similar to wind, aside from steam handling. This assumes the sun is still shining, not blocked out by clouds.
AFAIK, military industrial would be primary targets, with population centres being collateral damage. So most useful industry (not including useless consumer goods) would be wiped out.
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From what I saw from pork chop plots, there are some times where the dV cost doubles or triples or more…
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Okay, so a booster airframe has made 20 flights. Does it still have any of its original Merlins? What is the most flights for a Merlin engine?
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Geez, it might have been back in the 80s or 90s (maybe later, but don’t think so) that I came across an article suggesting that the blocks that built the Pyramids were poured, based on inclusions like hair. But apparently the theory never gained traction at the time…
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5 hours ago, Fizzlebop Smith said:
Now I'm wanting to binge watch terrible scifi to compile a list
The Battlestar Galactica reboot was pretty good, and they took a more realistic approach to space battles, although it still seemed to somewhat degenerate into point-blank brawls…
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9 minutes ago, darthgently said:
Even better, have SpaceX partner with DoorDash for the mission and require NASA to officially request the sample return via the DoorDash app. Proper channels and all
You know, this is certainly a huge advertising/sponsorship opportunity for a business like that, preferably one with deeeeeep pockets
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Would it not be simpler to just build a solid rocket motor into the base of the penetrator, to be ignited at the best point in the trajectory?
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9 hours ago, Nuke said:
oj simpson was killed by
flattus maximus' battleaxeprostate cancer. whether he did it or not is an exercise for the reader.Yeah, the imgur community has not been kind about this. IMO he's not worthy of making the thread title.
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On 4/10/2024 at 11:16 AM, kerbiloid said:
Ours was knowing the sound very well.
Every cat's name is the sound of the cat food can being opened.
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18 minutes ago, NFUN said:
They've already had to disable most of the equipment because if power concerns. I'm sure they've got memory to spare
They certainly don't need camera software any more...
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The biggest issue would be having the necessary resources, mainly fuels and ores, in economic reach. Can’t do much without iron ore and the coal (or oil?) to smelt it.
Perhaps the most civilizing advancement would be electric light, but that would probably be too close to witchcraft…
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1 hour ago, Spaceception said:
If I'm not mistaken, this will be the 5th vehicle reused for an operational flight (Shuttle, SpaceShipOne, New Shepard, Falcon 9, Electron), and the 3rd for an orbital launch.
You could add SpaceShipTwo to that first list. There are also the Dragon capsules to consider. I wonder how Dragon turnaround compares to Shuttle turnaround…
Tesla Thread
in Science & Spaceflight
Posted
Yeah, it's getting to the point where data/AI centers will need to secure their own power supply. Maybe that'll drive investment in a new generation of nuclear power plants!
Yeah, I know, wishful thinking, too many hurdles. But that's part of why Microsoft is invested in fusion.