A Boeing 737 aircraft has completed its first test flight for certification of a package of 737 performance improvements.
Aerodynamic and engine changes included in the package will reduce fuel consumption by 2%.
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A 1% saving comes from reducing resistance as air flows around the plane, and the upper and lower anti-collision lights have been changed from round to a more aerodynamic, elongated teardrop shape.
Wheel-well fairings have been recontoured to smooth the air flow near the main landing gear.
The environmental control system, exhaust vent and streamlined wing slat and spoiler trailing edges have also been redesigned for aerodynamic changes.
Low and high-pressure turbine modifications will result in another 1% reduction in fuel consumption.
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By GlobalDataBoeing is also optimising the engine’s primary nozzle and plug.
Testing and certification will continue until April 2011, and Boeing will phase the changes into production mid-2011 to early 2012.
