Aside from the article itself being interesting, it is nice to see bits of the old internet resurfacing from time to time.
Related:
The Taming of the Screw (2000) - https://news.ycombinator.com/item?id=18553301 - Nov 2018 (23 comments)
This essay must be quite old:
"... our newest generation of submarines, the Seawolf-class, does not even use propellers. Neither will the future generation, the Virginia-class, still on the computer design screen."
The first Virginia class submarine was commissioned in 2004. [0]
[0] https://www.navy.mil/Resources/Fact-Files/Display-FactFiles/...
Article says "copyright 2000" at the bottom.
The exhibit in question opened in 2000, so the article is likely from 1999.
https://www.si.edu/exhibitions/fast-attacks-and-boomers-subm...
Coming from ColinWright, I was more than half expecting this to be about kinematics of rotations and translation, well, screw theory, no Lie (*). Nonetheless this is going to be a good read.
An Akula class submarine, mentioned in the article, an uncharacteristically silent Russian attack submarine, was leased out to the Indian navy. I remember that there were intelligence failure from the Indian side that led to the leak of propeller acoustics of 'some' submarines - data for the Kilo class and the Scorpenes were leaked, not sure about Akula.
(*) In the off chance that the other screw is interesting too, there is this https://archive.org/details/theoryscrewsast00ballgoog to take for a spin, especially for those who have enough time on their hands.
> no Lie
[How very Sophusticated, an alternating screw theory]
Thanks for humoring.
kinda looks exactly like a cpu fan