The most advanced technologies
The LEAP engine combines the proven reliability of the CFM56 family with state-of-the-art technologies, including 4th generation, 3D aerodynamic design; lighter, stronger materials; and much more.
New Material: Ceramic Matrix Composite
Lighter weight and stronger than metal parts Ceramic Matrix Composites (CMC), introduced in both the HTP stage 1 shroud and #3 bearing, have much higher temperature capability. It consists of ceramic fibers embedded within a matrix. The fibers and the matrix can consist of any ceramic material, including carbon and carbon fibers.
- It can withstand a temperature of 1,300°C/ 2,400°F, 20% higher than metal
- CMC is 70% lighter than metal
- Only 18 fan blades versus 36 blades on the CFM56-5B
- Dust/sand ingested into an engine clogs cooling holes, resulting in performance degradation and shorter time on wing
- CFM heated the test cell to match ambient operating conditions
High Pressure Turbine (HPT) blade cooling flows have been optimized to mitigate dust exposure. A new, propriety ingestion rig that precisely replicates both the mineral content and particle size of dust encountered in harsh environments has enabled CFM to validate a new HPT blade and nozzle design that will provide operates in these regions with longer time on wing.