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The Boeing X-66 is an experimental airliner under development by Boeing. It is part of the X-plane series, and is being developed in collaboration with NASA and its Sustainable Flight Demonstrator program. It will use an extra-long and thin wing design stabilized by diagonal bracing struts, which is known as a Transonic Truss-Braced Wing.
Aug 2, 2010. "NASA, Boeing Test Low-Drag Truss-Braced Wing Concept: High-aspect-ratio, truss-braced wing promises marked fuel savings". Aviation Week & Space Technology. Aviation Week Network. January 27, 2014; Warwick, Graham (January 28, 2014). "Will Boeing Embrace Braced Wings?". Things with Wings Blog. Aviation Week Network
The natural outcome of this requirement is a wing design that is thin and wide, which has a low thickness-to-chord ratio. At lower speeds, undesirable parasitic drag is largely a function of the total surface area , which suggests using a wing with minimum chord, leading to the high aspect ratios seen on light aircraft and regional airliners .
It’s called the Transonic Truss-Braced Wing concept, which relies on elongated, thin wings stabilized by diagonal struts that connect the wings to the aircraft. ... Boeing estimates that the ...
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Proved aerodynamic viability of thin wing sections. [10] X-1A X-1B X-1C X-1D: Bell USAF, NACA 1951 High-speed and high-altitude flight X-1E: Bell USAF, NACA 1955 High-speed and high-altitude flight X-2: Bell USAF 1952 High-speed and high-altitude flight First aircraft to exceed Mach 3. [11] X-3 Stiletto: Douglas: USAF, NACA 1952 Highly loaded ...
The Safety Board determines that the probable cause of this accident was the isolation of the No. 7 leading-edge slat in the fully or partially extended position after an extension of the Nos. 2, 3, 6 and 7 leading-edge slats and the subsequent retraction of the Nos. 2, 3, and 6 slats, and the captain's untimely flight control inputs to counter ...
Boeing Liquid Hydrogen (LH 2) airplane that uses liquid hydrogen as fuel [28] Hypersonic Airliner Concept. Mach 5 speed [29] [30] Boeing 747-500 – larger ultra-haul version of the Boeing 747; Boeing X-66 – experimental Transonic Truss-Braced Wing airliner