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NASA's shape-shifting plane wings pass initial flight tests
After six months and 22 flights at NASA's Armstrong Flight Research Center in Edwards, California, NASA has announced the successful completion of testing for its morphing airplane wing design. Known as Adaptive Compliant Trailing Edge (ACTE) flight control surfaces, they replace a plane's conventional, rigid flaps with a flexible composite material. Not only are they designed to significantly reduce an aircraft's weight (as well as the noise it generates during flight), these flaps could save the industry millions of dollars annually in fuel savings. In tests, the wing's curve remained set anywhere from -2 to 30 degrees but it can be adjusted as needed, even in midflight. Eventually, flexible wings can make for lighter, more fuel-efficient planes as well as quieter takeoffs and landings.
NASA testing shape-shifting wings that make planes more efficient
The first airplane ever flown, the Wright Flyer, used "wing-warping," in which pulleys twisted the trailing edge of the airfoil for roll control. Ironically, NASA is now revisiting that tech in a way by flight-testing the FlexFoil, a system that replaces a plane's mechanical flaps with a shape-shifting wing. Since 1911, almost every airplane made has used mechanical flaps for climbing, descents and slow flight. While effective, they're aerodynamically inefficient thanks to the gaps and acute angles, as you may have noticed (in horror) when you're sitting near the wing of a passenger jet.
