Check out photo of NASA’s Quiet Supersonic Transport (QueSST) aircraft


Check out photo of NASA’s Quiet Supersonic Transport (QueSST) aircraft.
  Check out photo of  NASA's Quiet Supersonic Transport (QueSST) aircraft
NASA has been developing new designs for supersonic aircraft, with a specific focus on reducing the strength of the sonic booms — the sound created by a shock wave from an aircraft that moves faster than the speed of sound. The shape and overall design of a supersonic plane are particularly important for minimizing the loudness of the boom during flight.
“The idea is to design the airplane so that the shockwaves that are produced in supersonic flight are arranged in such a way that you don’t have a boom, you have just a kind of general, gradual pressure rise, which produces a quiet sound,” Peter Coen, commercial supersonic technology project manager, said in a video from NASA’s Langley Research Center.
QueSST is the preliminary design stage of NASA’s Low Boom Flight Demonstration (LBFD) experimental airplane, also known as an X-plane. So far, a scale model of QueSST has been tested in an 8-by-6-foot supersonic wind tunnel at NASA’s Glenn Research Center in Cleveland. The next phase will be to test the technologies in flight, Coen said in the video.
“So to do that, we’re building an X-plane design and the eventual Low Boom Flight Demonstration aircraft that represents the boom of a larger airplane,” Coen added. “The idea is to prove the technology; show how robust it is in a variety of atmospheric conditions, but ultimately to prove that the sound that is created is acceptable to people on the ground.”
Last week, QueSST was reviewed by NASA engineers, as well as experts from the Lockheed Martin Corp. — the lead contractor NASA partnered with in February 2016 to create the initial design of the supersonic aircraft. The teams concluded that “the QueSST design is capable of fulfilling the LBFD aircraft’s mission objectives, which are to fly at supersonic speeds — 1.4 times the speed of sound — but create a soft ‘thump’ instead of the disruptive sonic boom associated with supersonic flight today,” according to a statement from NASA.
https://www.nbcnews.com/mach/science/nasa-s-supersonic-jet-program-zooms-past-major-milestone-ncna779626

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