Boeing reveals ultra-efficient airliner concept

Credit: Boeing
Boeing has unveiled a refined design for its Transonic Truss-Braced Wing (TTBW) ultra-efficient airliner concept. The 737-class aircraft, with a 170-ft.-span low-drag wing, is designed to fly at Mach 0.8, a typical airliner cruise speed and faster than previous versions of the design.The TTBW...

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