How the 134-inch GE9X solves a noise problem that chevrons used to handle

The Boeing 777X will be exclusively powered by next-generation GE9X turbofans, which lack the iconic chevrons of the ...

6 decibels for 0.5% thrust: The engine trade-off Boeing made & Airbus refused

Boeing engine chevrons are an iconic solution to an outdated problem.
SpaceNews

NASA Glenn Wins Federal Laboratory Consortium Technology Transfer Excellence Award

CLEVELAND — A metallic foam developed at NASA’s Glenn Research Center for the reduction of turbofan engine noise was selected the winner of the 2009 Federal Laboratory Consortium (FLC) Midwest Region ...
SlashGear

What Type Of Fan Is In A Jet Engine And How Does It Work?

If you ask anyone working in the aviation industry what they think the most important component of modern-day planes is, chances are the vast majority may tell you that it is the jet engine. Also ...