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The Boeing 737 MAX LEAP-1B started revenue service in May 2017 with Malindo Air with 8 hours of daily operation, while the A320neo LEAP-1A surpassed 10 hours per day by July. Safran discovered a production quality defect on LEAP-1B low-pressure turbine disks during assembly for possibly 30 engines, and CFM is working to minimize flight-test and ...
The GE Passport is a high bypass ratio turbofan. The engine is a twin-spool, axial-flow turbofan with a high bypass ratio of 5.6:1 and an overall pressure ratio of 45:1. The front fan is attached to the three-stage low-pressure compressor; the 23:1 pressure ratio 10-stage high-pressure compressor includes five blisk stages for weight reduction.
The first LEAP began ground testing at GE's Peebles (Ohio) facility in September 2013, then at Snecma’s plant in Villaroche the following year. The LEAP-1C is the first of the family to begin flight testing on a modified GE Boeing 747-100. In 2021, the CFM International partnership has been renewed until 2050 and extended to include services.
Jet engine maker CFM International said on Friday aviation regulators in the United States and Europe have certified a "more durable" high-pressure turbine kit for its LEAP-1A engines that power ...
With its 30:1 bypass ratio, it should deliver a 15% improvement over the CFM International LEAP already at 11:1; but Airbus is more interested in the more conventional ultra high bypass ratio (UHBR) turbofan at 15:1, which could be introduced from 2025, offering 5% to 10% better efficiency than the LEAP and to be tested from 2020. [30]
In December 2009, Nexcelle became a partner on the world's first truly integrated propulsion system. The company was selected to provide a combined nacelle, thrust reverser and exhaust system for the new CFM International LEAP-1C engine selected as the sole western powerplant to launch China’s COMAC C919 jetliner.