An inlet assembly (114) for an auxiliary power unit (100) for an aircraft, including a duct (172) configured to provide fluid communication from an environment of the aircraft to an inlet of an engine of the auxiliary power unit (100), and a filter (182) received in and extending across the duct (172). The filter (182) includes a first filter portion (184) permeable to air, positioned across only part of the duct (172) and defining a transverse edge (190) in the duct (172); a second filter portion (186) permeable to air and extending from the transverse edge (190) to an end downstream of the transverse edge (190), and a collection member (188) impermeable to water. The collection member (188) extends between the downstream end and a duct wall. The first and second filter portions (184, 186) are non-parallel and the second filter portion (186) and the collection member (188) are non-parallel. An auxiliary power unit assembly and a method of feeding air to an internal combustion engine are also discussed.
AUXILIARY POWER UNIT INLET ASSEMBLY WITH FILTER
HILFSAGGREGATEINLASSANORDNUNG MIT FILTER
ENSEMBLE D'ENTRÉE D'UNITÉ DE PUISSANCE AUXILIAIRE AVEC FILTRE
2020-11-04
Patent
Electronic Resource
English
AUXILIARY POWER UNIT ASSEMBLY WITH REMOVABLE INLET FILTER
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