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The Aero-Acoustic Propulsion Laboratory (AAPL) is a world-class facility providing outstanding testing services in aircraft noise reduction, with an emphasis in engine nozzle and fan components. A large far-field arena is used at the Nozzle Acoustic Test Rig (NATR) to acquire flyby and sideline acoustic data of nozzle concepts at simulated flight conditions up to Mach 0.30.

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NASA Curator: Jason Hanna
NASA Official: Kathy Needham
Last Update: May 17, 2007
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