Embraer announced on March 12 that it had unveiled to its employees the first Embraer 175 with a package of aerodynamic improvements to reduce fuel burn at its Sao Jose dos Campos facility in Sao Paulo, Brazil. The airliner has redesigned wingtips 2.69m (8ft 10in) long with a dihedral of approximately 45°, and a strengthened wingbox, wing skins and area where the wing and fuselage join. Other aerodynamic refinements include fillers on the horizontal tailplane, revised rain deflector over cabin doors, improved ram air doors in the lower fuselage and low-drag wheel fairings. Use of engine bleed air within the environmental and anti-icing systemshas also been reduced. Together, the improvements are claimed to reduce fuel burn by 6.4% compared with a standard Embraer 175.
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