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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]
"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
The fuselage was constructed of aluminum angle braces bolted together to form a truss frame. [ 4 ] An innovative feature of the BD-4 was the wing structure, which employed a 'panel-rib' constructed in sections, consisting of a rib whose upper edge was extended horizontally to become one section of the wing surface.
The standard engine is the 40 hp (30 kW) Rotax 447, although engines of 28 to 52 hp (21 to 39 kW) can be used. The manufacturer estimates that a builder will take 100–120 hours to complete this aircraft from the kit. In 2009 the airframe-only kit for the wire-braced version cost US$3495 and US$3995 for the strut-braced version. A completed ...
Bracing, both internal and external, was extensively used in early aircraft to support the lightweight airframes demanded by the low engine powers and slow flying speeds then available. From the first Wright flyer of 1903, the fuselage was no more than a braced framework and even fore-aft diagonal bracing was used to hold the wings at right ...
The aircraft comes with float fittings welded onto the airframe and can also be operated on skis. The standard engine is the 64 hp (48 kW) Rotax 582, but engines up to 100 hp (75 kW) can be fitted. [3] The company claims a 40-hour assembly time from the supplied completed airframe to install the engine and paint the aircraft. [7]
The PW1500G variant, designed for the Airbus A220, became the first certified engine in 2013. The program cost is estimated at $10 billion. Unlike traditional turbofan engines where a single shaft connects all components, forcing them to operate at the same speed, the PW1000G has a gearbox between the fan and the low-pressure core. This allows ...
As this is a US aircraft the name is pronounced "Zee-Max". [1] [3] [4] 1300Z Z-MAX Single seat, enclosed cockpit, mid-wing aircraft with the 45 hp (34 kW) Zenoah G-50 engine. First flight 1990, out of production. Manufacturer claimed construction time 400 hours. 231 completed and flown by 2001. As this is a US aircraft the name is pronounced ...
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