Take to the water with this high-performance Twin Propeller Boat build, designed for maximum stability and impressive scale speed. In this video, we walk through the engineering behind the dual-motor ...

Abstract: Building upon recent works of the authors on Unmanned Aerial Vehicle (UAV) micro-Doppler analysis, this paper introduces three novel algorithms for estimating up to four distinct propeller ...

It’s a rare occasion when a piece of engineering transcends its pure industrial function and becomes art. And it’s even rarer when that metamorphosis is the byproduct of a quest for better performance ...

Sharrow's extraordinary looped propellers were already some 30% more efficient than traditional designs – and now the company has put two of them together into a coaxial, contra-rotating prop that ...

Body: Hello, I’m with the USDA Forest Service’s Innovation and Organizational Learning. We just released a 9 min. video about a fire behavior phenomenon called the Counter Rotating Vortex Pair.

In a routine drilling operation on a milling machine or drill press, a drill's cutting edges rotate against a stationary workpiece. The opposite is true in holemaking on a turning-machine/" ...

(Nanowerk News) As anyone who drinks their coffee with milk knows, it’s much easier to mix liquids together than to separate them. In fact, the second law of thermodynamics would seem to dictate that ...