NASA FLIGHT TESTING TWO TECHNOLOGIES THAT CUTAIRFRAME NOISE DURING LANDING

摘要

NASA recently concluded a series of flight tests examining the acoustic benefits of two NASA technologies that may significantly reduce airframe noise for communities near airports. The flights – completed in October at NASA’s Armstrong Flight Research Center in Edwards, CA – gathered data on NASA’s Landing Gear Noise Reduction technology, or LGNR, and on a flexible, twistable wing flap that also has been used to investigate improved aerodynamic efficiency. These technologies, when combined to explore their potential for reduced airframe noise – primarily during landing – are known as Acoustics Research Measurements, or ARM.