CFM RISE program

Cleared Direct Oct 7, 2026

The CFM RISE Program, the Counter-Rotating Open Fan, and the Thermodynamic Bet That Could Redefine Every Narrowbody Flying in the Twenty Thirties

CFM's RISE program is developing a counter-rotating open fan engine targeting 20%+ fuel burn improvement over current LEAP engines, with entry into service targeted for the mid-2030s.

Vector

Cleared Direct Aug 29, 2026

The CFM RISE Program, the Open Fan Engine, and the Physics of Removing the Nacelle

CFM International's RISE program targets more than 20% better fuel burn by eliminating the nacelle entirely, marking the most fundamental rethink of commercial jet propulsion in decades.

Vector

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