Japanese engineers built a magnet-free electric motor with a plastic rotor, opening a surprising path for future machines.

Helicopters stand among the many reasons why aviation is as important as it is today. These aircraft occupy various niches worldwide, ranging from extensive military applications, such as helicopters ...

Arizona's Rotor X wants to step up from being the world's biggest kit helicopter manufacturer and get into the eVTOL game, and to do so, it's put forth a design it claims is "dramatically more ...

Rotor syndrome is a rare and typically harmless genetic condition affecting the liver. It causes jaundice, mild yellowing of skin and eyes, and generally doesn’t need treatment. Rotor syndrome is a ...

Mast bumping is something that can occur with some types of helicopters. Here's exactly what it is, what causes it, and how ...

Felix Wankel's rotary engine, a version of which would power the car that would become the Two-Rotor Corvette, was billed as the next big thing for a time. Germany's NSU and Japan's Mazda were the ...