Snecma tests DEM21 core demonstrator

Snecma Moteurs' DEM21 core engine demonstrator has passed its first tests at the company's Villaroche facility. Performance was satisfactory, and the DEM21 core spooled up to nominal speed according to specifications, without any technical problems. All results meet or exceed the forecast efficiency, operability and dynamic behaviour.

These first tests are a major step forward in the SM146 regional engine programme. New technologies incorporated in the DEM21 core will ensure that the SM146 fully meets market expectations in terms of dispatch reliability, cost of ownership and environmental performance.

The DEM21 core applies advanced technologies developed by Snecma Moteurs, including:

• A 6-stage high-pressure compressor, with a 3D aerodynamic design enabling a high pressure ratio
• A low emissions combustor ú
• An advanced single-stage high-pressure turbine, with active clearance control and single-crystal materials.

The DM21 core was designed from the ground up for certification as a regional aircraft engine.

"The initial DEM21 test results are excellent news," said Pierre Thouraud, Vice President Engineering of Snecma Moteurs. "The fact that we achieved these results right from the first build confirms that our company - which maintains a sustained research & technology programme - masters all technologies needed to develop a new-generation commercial core engine."

Ground testing of the DEM21 core engine will continue through the end of August.

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