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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 RS1 launch vehicle first flew on Jan 10, 2023. The launch ended in failure. [78] — X-64 Invocon Inc. AFRL — Modular aerospike engine launch vehicle testbed [77] X-65 CRANE: Aurora Flight Sciences: DARPA 2025 Control of Revolutionary Aircraft with Novel Effectors [79] X-66: Boeing: NASA 2028 Transonic Truss-Braced Wing [80]
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. The design’s shape creates less ...
Back in January, Boeing flew its fancy new widebody aircraft for the first time. The wings are longer than the ones on previous versions of that airplane—a design change that helps increase the ...
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
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 .
NTSB investigators reported discovering critical controls on some Boeing 737s — including its MAX airplanes — could jam after discovering a part that could fail.