Torqeedo, a major innovator of all-electric boat motors, is working on a new version of its iconic bright-orange propeller, crafted from 100% recycled plastic. Not only will its future electric marine ...

Metrology and 3D-printing distributor Burton Precision helped University of Michigan researchers solve three major CAD problems, so they could make a plastic propeller for a human-powered submarine.

Researchers have hit upon an unusual way to spin tiny propellers – set them on top of tiny bouncing bubbles. Inspired by winged seed pods, they could find use for mixing tiny amounts of liquids, or ...