CFM RISE program

aircraft engines aviation sustainability fuel efficiency future of aviation GE Aerospace jet engine technology open fan open fan engine unducted fan

Cleared Direct Aug 11, 2026

The Open Fan, CFM's RISE Program, and the Engine With No Cowling That Wants to Cut Airline Fuel Burn by Twenty Percent

Radio Hangar explores The Open Fan, CFM's RISE Program, and the Engine With No Cowling That Wants to Cut Airline Fuel Burn by Twenty Percent.

Vector

Cleared Direct Aug 9, 2026

The Open Fan and CFM's RISE Program, the Unducted Engine Betting That the Next Big Efficiency Jump Comes From Taking the Cowling Off

CFM's RISE open fan engine ditches the cowling to cut fuel burn 20%, reviving a 1980s idea the tools couldn't build until now.

Vector