As boring as propeller designs may seem to the average person, occasionally there’s a bit of a dust-up in the media about a ‘new’ design that promises at least a few percent improvement in performance ...

The final test was a blunt one. Maarten Logtenberg wielded a sledgehammer, which simply bounced off the sample, barely leaving a scratch. After two years of experimentation, the material was finally ...

There is a little thrill in watching something you designed get built, layer by layer, by a 3D printer. But it's a slow thrill. 3D printing, even for a small object, can take a loooooong time. If ...