Balance of power: Weighing engine concepts for the next-gen narrowbody

When Airbus and Boeing commit to new single-aisle designs to replace their ubiquitous narrowbodies, the most anticipated decision will be the choice of propulsion.Engine manufacturers Pratt & Whitney and CFM International are focusing on separate strategies, pitching the conventional and conservative ducted fan against the radical open rotor.Each concept has its supporters and detractors. Each holds appeal and carries risk.FlightGlobal's Americas aerospace editor Jon Hemmerdinger joins air transport editor David Kaminski-Morrow to discuss a power struggle which will potentially reshape the engine sector and the broader aerospace industry.