Boeing is targeting a 2% reduction in 737NG fuel consumption by 2011 through a combination of airframe and engine improvements.
The manufacturer unveiled a new “787 style” interior for the 737NG in Seattle yesterday to be implemented in aircraft operated by seven airlines beginning in late 2010. The changes “are more than cosmetic,” it said, noting that a major component of the improved 737NG will be increased fuel efficiency. About 1% of the targeted fuel savings with be achieved through airframe “structural improvements [that] will reduce drag on the airplane,” while the other 1% will come from “hardware changes” to the engine made by CFM International.
CFM yesterday launched the CFM56-7B Evolution engine enhancement program, with EIS set for mid-2011 to coincide with the arrival of the upgraded 737NG airframe. According to CFM, the engine will feature improved airfoils in the high- and low-pressure turbines as well as improved cooling techniques and fewer parts.
The enhanced airframe/engine combination “will provide a 2% improvement in fuel consumption” and also produce up to 4% lower maintenance costs, depending on the thrust rating, compared to current model 7B engines. The first Evolution powerplant is scheduled to begin ground testing in September with flight tests commencing in early 2010, paving the way for engine certification in the third quarter. Once certified, it will be designated the CFM56-7BE.
The airlines that will operate improved 737NGs include FlyDubai, Continental Airlines, Norwegian Air Shuttle ASA, Malaysia Airlines, TUI Travel, Gol and Lion Air. The new cabin, dubbed the 737 Boeing Sky Interior, will draw “from years of research used to design the interior for the 787. . .[and feature] modern sculpted sidewalls and window reveals that draw passengers’ eyes to the airplane’s windows,” Boeing said, adding that the sidewall design will integrate “the air vent so that before-flight security checks go more quickly for maintenance staff.”
It noted that the new design also “offers larger, pivoting overhead stowage bins. . .[and] redesigned reading-light switches so passengers can find them more easily. . .Speakers will be integrated into each row’s passenger-service unit to improve sound and clarity.” Additionally, new air vents and “improved noise-dampening materials” will make cabins quieter in flight, the manufacturer claimed.
CO will make a 737-800 available to Boeing to flight test the performance improvements.
(ATW)