Join us as we put 15 different Lego propellers to the test in this fun and informative video! We explore how each propeller design performs in terms of speed, power, and efficiency, comparing ...

A few patents later, Sharrow had what he claims is the first major design change for propellers since the 1830s. [Image: Sharrow Marine] The new contra-rotating version.

Can one invention revolutionise propellers, whose basic design has been around for over 100 years? Not so fast. What is a ‘toroidal propeller’ and could it change the future of drones?

Even though the prop had many advantages over the paddle wheel, the fact that during the 1840s and 50s most ships were still made of wood posed significant challenges in terms of power, thrust ...