Designing a craft that can operate in the alien aerodynamics of Mars is a different matter. Perseverance's Ingenuity ...

Rotors spin 10 times faster than modern helicopters.

The rotor blades that will carry NASA's next-generation helicopters to new Martian heights broke the sound barrier during ...

So the ram-rotor controls reactant compression, the detonation point, and burned gas expansion within that single rotor. And it uses a continuous supersonic rotating detonation wave as its primary ...

In its standard form, the Mazda 13B Rotary engine has two rotors that make a distinct 'brap-brap' while at idle, and a 9,000 RPM scream on full tilt. It's a two-stroke dream of an engine with a cult ...

A DJI Phantom 3. Zimin.V.G. [CC BY-SA 4.0] If you are a watcher of the world of drones, or multirotors, you may have a fixed idea of what one of these aircraft looks like in your mind. There will be a ...

Let’s talk rotary engines. Also known as Wankel engines, these unique power plants can be finicky at best, but when they work, they are absolutely wondrous. Well-known car builder Rob Dahm has been ...