Boeing 747-8i Engine Close Up
Close view of a GEnx-2B engine on a Lufthansa 747-8.
A GEnx-2B engine on a Lufthansa 747-8, showing the serrated chevrons on the nacelle trailing edge.
Those chevrons mix exhaust with surrounding air more gradually, cutting jet noise. They are also the quickest way to identify a 747-8 from the ground — no earlier 747 has them. More on the GEnx-2B.




