September 9, 2015
“Nature’s top speed law for a given tube to pod area ratio is known as the Kantrowitz limit. This is highly problematic, as it forces you to either go slowly or have a super huge diameter tube. Interestingly, there are usually two solutions to the Kantrowitz limit – one where you go slowly and one where you go really, really fast.
The latter solution sounds mighty appealing at first, until you realize that going several thousand miles per hour means that you can’t tolerate even wide turns without painful g loads. For a journey from San Francisco to LA, you will also experience a rather intense speed up and slow down. And, when you get right down to it, going through transonic buffet in a tube is just fundamentally a dodgy prospect.
Both for trip comfort and safety, it would be best to travel at high subsonic speeds for a 350 mile journey. For much longer journeys, such as LA to NY, it would be worth exploring super high speeds and this is probably technically feasible, but, as mentioned above, I believe the economics would probably favor a supersonic plane.
The approach that I believe would overcome the Kantrowitz limit is to mount an electric compressor fan on the nose of the pod that actively transfers high pressure air from the front to the rear of the vessel. This is like having a pump in the head of the syringe actively relieving pressure.”
Why quote Elon Musk?
Well, he’s kind of interesting. Right?
Maybe one of ya’ll could explain what old Eli meant in that wall of nonsense above.
Here’s another interesting/irritating one from Musk:
“I think it’s very important to have a feedback loop, where you’re constantly thinking about what you’ve done and how you could be doing it better. I think that’s the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.”
If I’m being completely honest, this quotation represents the same self-improvement Zeitgeist that’s really become inescapable: at least in contemporary North America. I do not know the Zeitgeist of Brazil or Ghana.
When did it happen that life always had to be about improving yourself. Americans—at least—sure as fuck didn’t always have this dogshit-ethos.
You know what Elon…I actually don’t always want to be constantly thinking about what I’m doing and how I could do it better.
You go ahead, sir, and call me fucking crazy if you like. But, you’re telling me that I should be “constantly” thinking about how to “do things better” while questioning myself.
No, sir! Who the fuck are you to tell me that I should be constantly thinking in this way.
Call me crazy, Musk, but I sometimes like to take a little break and enjoy my Goddamn life which has a time limit, man!
I like to fire-up some VR porn, eat an ice cream and roll around in the woods!
Deep-down this guy’s got those same fascist tendencies.