Boeing's latest innovation in the travel field is an extremely thin, folding wing that it says will let planes fly at just below the speed of sound at higher altitudes than before, while offering unprecedented aerodynamic efficiency, according to a news release from the company.
The Transonic Truss-Braced Wing boasts an extended wingspan of 170 feet, made possible by a truss that supports its weight.
During development, which is still at conceptual phase, engineers have also been able to obtain an increased top speed from a planned Mach 0.70-0.75 to Mach 0.80, only slightly below the speed of sound, or Mach 1.
BTW folding wings are already showing up on the new Boeing 777X
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