The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according to a ...

The main rotor of the doomed helicopter that crashed into the Hudson River was finally recovered Monday — which could provide crucial information as investigators continue to probe what caused ...

How BMW’s Rotor Design Enhances EV Motor Efficiency. In recent months, General Motors, Porsche, Mercedes-Benz, and Hyundai have all submitted patents for improved rotor designs for electric ...

Brake rotors should be 8 to 30 mm thick, or whatever your vehicle manufacturer recommends. Measure them with a brake rotor gauge or micrometer measuring tool.

Moments after, a rotor is seen falling, detached from the aircraft. See the video, obtained by USA TODAY : Lori Comstock is a New Jersey-based journalist with the Mid-Atlantic Connect Team .

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 ...

Being flexible is bad. The Defiant isn’t the first coaxial helicopter: the Russian Kamov Ka-80 sports two rotors above each other, and Chinook helicopters also use two large rotors that spin in ...

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 … ...

Could there possibly be a rotary engine with 12 rotors? The answer is yes, and here’s everything we know about it including how much HP it could have.