Comment by LysPJ 6 days ago Here you are: https://en.wikipedia.org/wiki/Toroidal_propeller 2 comments LysPJ Reply AftHurrahWinch 6 days ago Really enjoyed this:> In the centuries after Archimedes invented the Archimedes' screw, developments of propeller design led to the torus marine propeller... it was invented in the early 1890s"the centuries" indeed. :) reedciccio 6 days ago Uhm... The article lacks quite a few citations.
AftHurrahWinch 6 days ago Really enjoyed this:> In the centuries after Archimedes invented the Archimedes' screw, developments of propeller design led to the torus marine propeller... it was invented in the early 1890s"the centuries" indeed. :)
Really enjoyed this:
> In the centuries after Archimedes invented the Archimedes' screw, developments of propeller design led to the torus marine propeller... it was invented in the early 1890s
"the centuries" indeed. :)
Uhm... The article lacks quite a few citations.