CFM and GE certify third engine in two weeks

For the third time in two weeks, CFM (GE & Snecma) and GE have announced certification of new engine variants. Most recently on July 30, CFM was granted certification of the updated CFM56-7BE engine, which will enter service in mid-2011 on the Boeing 737.

The -7BE evolution engine will fly in the fourth quarter on a Continental 737-800, as Boeing looks to deliver at least 2% improvement in fuel burn to its existing single-aisle product line. The company test flew the new nacelle design in August 2009.

The engine features a revised high pressure turbine guide vane diffuser, improved high pressure turbine blades, disc and a revised forward outer seal, along with improvements low pressure turbine blades, vanes, discs and case.

While CFM outwardly states that the engine will contribute 1% improvement on its own, testing has found that the engine will deliver 1.6% improvement in fuel burn. An additional 1% will come from aerodynamic refinements to the exterior of the 737.

The CFM56-7BE engine is part of a host of improvements to the 737, which also include the  Boeing Sky Interior, which will enter service with flyDubai, the first of 37 customers later this year.