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CFM International CFM56-2

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This object is on display in the Jet Aviation exhibition at the National Mall building.


The CFM56-2 high bypass ratio turbofan engine is produced by CFM International, an international company formed by General Electric of the U.S. and SNECMA of France. This was one of the first major international partnerships for production of large jet engines, and was motivated by concern over the required large investment, growing internationalization of the market, and need to reduce technical and business risks.

The CFM56 was initially intended to replace older turbojet engines of the 89-kilonewton (20,000-pound) thrust class, and to provide quiet, efficient, and environmentally acceptable power for transport aircraft. Engines of this family are used on both civil and military aircraft. Civil types include Boeing 737s and Airbus Industrie A320s and A340s. CFM56s are also used as replacement engines on older civil aircraft, such as the McDonnell Douglas DC-8-70, and on such military aircraft as the Boeing KC-135R.

The engine on exhibit was used for flight qualification testing on a McDonnell Douglas DC-8-70 in 1981.

Gift of CFM International, Inc.

Manufacturer: CFM International, Inc.

Date: 1979

Country of Origin: United States of America

Dimensions: Diameter 182.9 cm (72.0 in.), Length 243.8 cm (96.0 in.)

Physical Description:Type: Turbofan Thrust: 97,900 N (22,000 lb) Compressor: Single-stage fan, 3-stage axial low pressure, 9-stage axial high pressure, Combustor: Annular chamber Turbine: Single-stage axial high pressure, 4-stage axial low pressure Weight: 2,102 kg (4,635 lb)

Inventory number: A19900042000

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