WASHINGTON, Sept 10 (Reuters) - The head of European planemaker Airbus (AIR.PA), opens new tab said novel open-rotor technology being tested by engine maker CFM International offers promising ...

Airbus chief executive Guillaume Faury has made clear he expects the European airframer’s next narrowbody jet will be 25% more efficient than today’s models – and he is banking on CFM International’s ...

Rotary engines differ from conventional ones in many respects — and one of them is the fact that they use two different spark ...

FILE PHOTO: A model of the CFM International RISE, an open rotor engine under development by CFM International, a 50-50 joint venture between American GE Aerospace and French Safran Aircraft Engines, ...

Wind-tunnel testing of multiple configurations of sub-scale blades for GE's Open Rotor engine is being conducted to identify the optimum blade design for the engine's two counterrotating stages of ...

How engine design has evolved to boost fuel efficiency, and where it's going from here.

A Wankel engine is a type of rotary engine, but not all rotary engines are Wankel engines. Wrapping your mind around this idea will help you to better understand the similarities as well as the ...

In a world dominated by pistons, the rotary engine was something different for motorists. It was the vision of German engineer Felix Wankel, built on the belief that the up-and-down motion of pistons ...

Mazda made a splash in the market in 1990, launching the Eunos Cosmo with the three-rotor 20B engine. Compared with contemporary Wankel rotary engines, the 20B's extra rotor beefed the compact ...

PARIS, Feb 12 (Reuters) - French-US jet engine maker CFM is studying ⁠a ⁠more conventional "advanced ducted" engine design alongside its ⁠preferred option for a radical open-fan concept for future ...