NASA Aims For Supersonic Airliners As Quiet As Subsonic [feedly]

NASA Aims For Supersonic Airliners As Quiet As Subsonic
http://demo2.aviationweek.com/technology/nasa-aims-supersonic-airliners-quiet-subsonic

Three-stream turbofans, inverted-velocity-profile nozzles, airframe shielding—NASA gets creative to ensure future supersonic transports will be no noisier than today's subsonic airliners.

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