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"Electric aircraft generates buzz at Oshkosh air show". Chicago Tribune. August 1, 2010. "Air show examines hybrid airliners". United Press. 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
A model of the Transonic Truss-Braced Wing aircraft in a wind tunnel at NASA's Ames Research Center. By early 2019, following extensive wind tunnel testing at NASA Ames Research Center, an optimized truss and more sweep for the 170 ft (52 m) span wing allowed flying higher and faster, up from Mach 0.70–0.75 to Mach 0.80 like current jetliners. [3]
This was a new aircraft destined for American Airlines and in their livery. With this, the first ecoDemonstrator, Boeing tested laminar flow technology for winglets, improving fuel efficiency by 1.8 percent. This fed directly into the design of the winglets used on the subsequent 737 MAX series. [19] The aircraft tested other technologies ...
The Boeing truss-braced wing (TBW) concept was developed for the NASA-funded Subsonic Ultra Green Aircraft Research program with an aspect ratio of 19.5 compared to 11 for the Boeing 787: the strut relieves some bending moment and a braced wing can be lighter than a cantilevered wing or longer for the same weight, having better lift-to-drag ...
In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of struts, which act in compression or tension as the need arises, and/or wires, which act only in tension.
The Boeing Truss-Braced Wing subsonic concept was planned with hybrid electric propulsion. [1] The Diamond DA36 E-Star first flew on 8 June 2011, the first flight of a series hybrid powertrain, reducing fuel consumption and emissions by up to 25%, a technology scalable to a 100-seater airliner. [2]
[1]. The prototype HD31 demonstrating at Coventry Airport in June 1954. HD.31 - Prototype with 800 hp (600 kW) Wright Cyclone C7BA1 radial engines.One built. [2] [3]HD.32 - Two 1,200 hp (890 kW) Pratt & Whitney R-1830-92 radial engines and fitted with twin fins.
The Type XIII differed considerably from the series of tractor configuration monoplanes with which Louis Blériot is generally associated. It was a high-wing pusher configuration monoplane, with the 100 hp (75 kW) Gnome engine inset into the trailing edge of the square-tipped wing, which had inset ailerons and was braced by a deep wire-braced truss underneath.
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