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Snecma announces Silvercrest's first successful test results

Snecma (SAFRAN Group) today announced the first, positive results from its Silvercrest core engine demonstrator test program. To date, the core engine has completed 35 hours of combustion testing, achieving all expected performance objectives.

The test campaign began last December in Snecma's Villaroche, France test facility, on a dedicated rig for core testing. These tests will enable Snecma to validate the design and core performance as well as overall integration.

Tests performed as of today have assessed the overall compressor performance as well as combustor performance and HPT efficiency. Tests also checked the overall dynamic behaviour characteristics.

Ignition and initial run reached up to 19,800 rpm, which represents 85% of take-off thrust. Other successful results included: rotor blade dynamic characteristics, high-pressure compressor (HPC) and high pressure turbine (HPT) tip clearances and compressor pressure ratio and stall margins. A total of 660 real time parameters are monitored during the tests.

The test campaign is planned to continue until March.

"We committed early 2006 that we would run a core engine end of 2007. We did it and we are seeing outstanding results, fully in line with our expectations. We are very pleased with the success of this first series of tests", said François Planaud, Snecma executive vice president, commercial engines. "Snecma is the first engine manufacturer to run a core engine demonstrator to validate a brand new engine concept in this market segment. It marks a major step toward the continuation of this program, and the optimization of the engine design."

The Silvercrest engine family, developing 9,500 to 12,000 lb of thrust, is intended for super-midsize to large business jets. It will bring spectacular advances in performance, reliability and environmental friendliness over current generation engines. The typical application of the Silvercrest engine family will be a large cabin, long-range aircraft. The engine design integrates specific features that will also meet the needs of 40 to 60-seat regional jets, when relevant market conditions allow carriers to replace their existing fleets.

Snecma, SAFRAN group, is one of the world's leading manufacturers of aircraft and space engines, with a wide range of propulsion systems on offer. The company designs and builds commercial aircraft engines that are powerful, reliable, economical and environmentally friendly, along with military aircraft engines that have always delivered world-class performance. Snecma develops and produces propulsion systems and equipment for launch vehicles and satellites. CFM56 engines are produced and marketed by CFM International, a 50/50 joint company between General Electric and Snecma.

Press release issued by Safran Aircraft Engines on January 29, 2008


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