An inlet door for an auxiliary power unit includes a door body with opposed interior and exterior surfaces. The interior surface of the inlet door is curved to diffuse sound waves received by the interior surface.
ACOUSTICALLY DIFFUSIVE AUXILARY POWER UNIT INLET DOORS
2015-12-10
Patent
Electronic Resource
English
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
POWER CONVERTER, GENERATOR AND ARCHITECTURE FOR HIGH EFFICIENCY AUXILARY POWER UNIT
European Patent Office | 2016
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