An auxiliary power unit for an aircraft includes a turbine engine. An inlet includes an opening and a passageway between the opening and the turbine engine. An acoustic splitter is supported within the passageway for attenuating noise within the inlet. An inlet door is movable between a closed position and a fully open position. A portion of the inlet door aligns with a part of the passageway in at least a first position and divides the passageway to deflect ice and noise in at least a second position. An air inlet and a method are also disclosed.
ACOUSTIC CONTROLLED ICE DEFLECTING AUXILIARY POWER UNIT INLET SYSTEM
AKUSTISCH GESTEUERTES EINLASSSYSTEM FÜR EISABLENKUNGSHILFSSTROMEINHEIT
SYSTÈME D'ADMISSION D'UN GROUPE AUXILIAIRE DE PUISSANCE À DÉVIATION DE GLACE À COMMANDE ACOUSTIQUE
2019-05-15
Patent
Electronic Resource
English
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
ACOUSTIC CONTROLLED ICE DEFLECTING AUXILIARY POWER UNIT INLET SYSTEM
European Patent Office | 2016
|Acoustic controlled ice deflecting auxiliary power unit inlet system
European Patent Office | 2019
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