Why CFM's open-fan engine must solve the acoustic problem that killed GE's 1980s open-rotor program

What was the issue and what impact did it have?
Flightglobal

Pratt & Whitney stays true to ducted-fan plan and rejects open-rotor engine for next-generation single-aisle

Pratt & Whitney continues to insist its engine offering for the next generation of single-aisle aircraft will be a traditional ducted fan engine, eschewing the open-fan design of its rival CFM ...
Flightglobal

Airbus targets 25% efficiency gain from next narrowbody with help from CFM’s RISE

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 ...
Reuters

Airbus CEO upbeat on new engine technology, but says jury still out

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 ...
Reuters

Airbus says next jet 'evolutionary not revolutionary'

Next narrow-body jet could include open-rotor engine, CEO says Faury defends delay in developing hydrogen-powered aircraft The head of the world's largest planemaker was speaking at the start of an ...
Aviation Week

SINGAPORE AIRSHOW: GE confirms open rotor testing

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 ...