this post was submitted on 11 Dec 2023
288 points (100.0% liked)
196
16320 readers
2391 users here now
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
If the fan blew across an airfoil aligned perpendicular to the axis of the boat, it can definitely generate thrust. The top of the airfoil will develop a lower pressure than the bottom, and the difference in pressure causes force that moves the boat. It's just way more efficient to use a fan to push the boat.