Aviation et EnvironnementPau – 7 Février 2013

CFM, CFM56, LEAP and the CFM logo are trademarks of CFM International, a 50/50 joint company between Snecma (Safran group) and GE. The information in this document is CFM Proprietary Information and is disclosed in confidence. It is the property of CFM International and its parent companies, and shall not be used, disclosed to others or reproduced without the express written consent of CFM. If consent is given for reproduction in whole or in part, this notice shall appear in any such reproduction in whole or in part. The information contained in this document may also be controlled by the U.S. and French export control laws. Unauthorized export or re-export is prohibited.

Une nouvelle génération de Moteurs

Le LEAP

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LEAP : "Leading Edge in Aviation Propulsion"The New CFM Engine for Short / Medium Range Aircrafts

LEAP, the succession of the 'Best Seller' CFM56

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LEAP : a CFM Engine

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Next generation of breakthroughtechnologies & innovations

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Meeting performance requirements with CFM reliability

Performance Environment

Reliability

Combining technology, experience & execution

for

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Community Noise Footprint Reduction

Current TurboFans

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Fan module

Technologies

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Fan blades technology …weight, noise and durability

Performance impact

11 BPR without weight penalties

Enabling chapter 5 noise compliance

High durability

Maintenance free

CFM56-5B LEAP

Diameter 68in 78in

Blades count 24 18

Blades Material Solid titanium 3-D woven RTM composite

Weight BASE 50% less

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Fan techno revolutionary in this thrust class

Resin Injection

Ti Leading Edge

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High pressure modules

Technologies

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HPC third-generation 3-D aero blades

Leading edge design based on:Advanced computer codes• Airfoil shape optimized to reduce losses• Blages long-term wear modeled to reduce deterioration

Current Aero

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50% NOx emissions margin vs. CAEP6

Twin Annular Pre-Swirl (TAPS) Combustor :Dedicated technology to lower emissions

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High-tech High Pressure Turbine …maintenance cost under control

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Low pressure turbine module

Technologies

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LPT blades … simple design, ultra high efficiency

Simple proven design • Low speed• Uncooled blades

Increased performance • 3D aerodynamics• Multi-Stage 3D aero optimization• Blades & Vanes Clocking• New proven lightweight materials (TiAl)

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Future

Technologies

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CFM’s legacy

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Composite development timeline

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Future fuel burn reduction requires morethan an engine

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New Alternative Fuels

• Safran is part of national or international Research Programmes (Calin, Dream, Alfabird, Swafea, CAER, etc..)

• Contributes to the establishment of Alternative Fuels Roadmaps through Corac (CoFrance), ACARE (Europe), CAAFI (USA), etc..

• Supports to the development of biofuels production demonstration units• Contributes in evaluation and qualification of new alternative fuels

through ASTM International– Direct involvement or involvement via CFM including engines ground

tests and flight demonstrations

• No specific change requested in Engine design§ Corac : Conseil pour la Recherche Aéronautique Civile§ ACARE : Advisory Committee for Aviation Research and Innovation in Europe§ CAAFI : Commercial Aviation Alternative Fuels Initiative

Illustration : usage of reports of a Continental flight with

CFM56 engine in a research report to ASTM