When we first reported on Mingyang’s OceanX, it was already causing a bit of a stir thanks to its dual-rotor design. Now, it has launched from its building site at Guangzhou, China and is heading ...

A dual-rotor concept to improve helicopter performance achieved first flight more than a year after originally planned. Will the design live up to its promise? A futuristic helicopter prototype ...

AMES, Iowa – Hui Hu picked up a 3-D printed model of a typical wind turbine and began explaining two problems with the big, tall, three-bladed machines. First, said the Iowa State University professor ...

As fluid passes through Exact Flow’s new DX-DL dual-rotor turbine flowmeter, the dual rotors become hydraulically coupled due to their counter-rotation. Not only does this allow the rotors to overcome ...

Mazda’s rotary engine is coming back in the spotlight, but this time it’s not just a nostalgic callback to the RX-7 glory days. Instead, it’s quietly shaping the brand’s electrified future. Rather ...

The Kaman K-MAX has intermeshing rotors eliminating the need for a tail rotor. These opposite-spinning rotors lend the K-MAX a natural tendency to hover, making it more stable. The K-MAX is ideal for ...