We’re not entirely sure what to call this one. It’s got the usual trappings of a drone, but with only a single rotor it clearly can’t be called by any of the standard multicopter names.

Unless, apparently, you're rotary wizard Rob Dahm: then you can slap a turbocharged single-rotor Wankel in there, and add power while actually cutting weight. Dahm's latest project is to swap an ...

Rotor assistance in walking experiments improved ... modified by substituting a bridge design for the cantilevered output mechanism. The actuator, using a cycloidal gear reducer integrated into ...

Lockheed Martin's Sikorsky has successfully flown its "rotor blown wing" uncrewed aerial system in both helicopter and fixed-wing flight modes, it announced Monday. The 115-pound twin-prop drone ...

A four-speed automatic transmission accompanied that powerful triple-rotor engine ... this electronically controlled torque split mechanism was adjusted via a button that was positioned on ...