MIflyer
1st Lieutenant
And we thought that strut braced wings were limited to antiques and a older Gen Av aircraft....
"Boeing will study the certification challenges of its Transonic Truss-Braced Wing (TTBW) ultra-efficient airliner concept as part of a new phase of work following wind tunnel tests that prove the basic viability of the 737-class aircraft design for typical airliner cruise speeds of Mach 0.8.
Evaluation of the slender, low-drag wing concept continues as Boeing considers technologies for a potential next-generation single aisle design to succeed the 737 MAX towards the end of the decade. With a 170-ft.-span wing, the TTBW was originally developed in 2010 under the Boeing and NASA Subsonic Ultra Green Aircraft Research (SUGAR) program to study new configurations for ultra-efficient airliners that could enter service in the 2030-2035 timeframe.
Under the fourth and most recent phase of the program Boeing developed and tested a high-lift system for the vehicle's long, thin wing which is braced by trusses to minimize the weight penalty of the 170-ft. span. The company estimates that, thanks to the reduced induced cruise drag of the high-aspect-ratio wing, the TTBW will have a 9% fuel-burn advantage over a conventional tube-and-wing airliner on ranges up to 3,500 nm."
"Boeing will study the certification challenges of its Transonic Truss-Braced Wing (TTBW) ultra-efficient airliner concept as part of a new phase of work following wind tunnel tests that prove the basic viability of the 737-class aircraft design for typical airliner cruise speeds of Mach 0.8.
Evaluation of the slender, low-drag wing concept continues as Boeing considers technologies for a potential next-generation single aisle design to succeed the 737 MAX towards the end of the decade. With a 170-ft.-span wing, the TTBW was originally developed in 2010 under the Boeing and NASA Subsonic Ultra Green Aircraft Research (SUGAR) program to study new configurations for ultra-efficient airliners that could enter service in the 2030-2035 timeframe.
Under the fourth and most recent phase of the program Boeing developed and tested a high-lift system for the vehicle's long, thin wing which is braced by trusses to minimize the weight penalty of the 170-ft. span. The company estimates that, thanks to the reduced induced cruise drag of the high-aspect-ratio wing, the TTBW will have a 9% fuel-burn advantage over a conventional tube-and-wing airliner on ranges up to 3,500 nm."
