Auxiliary power unit system of an aircraft
AssigneeAirbus Operations S.L.U.
InventorMiguel Ángel Soto Carril
Life of this patent
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Abstract
An auxiliary power unit system of an aircraft includes an auxiliary power unit (APU), a cooling unit for the APU including a heat exchanger, an air inlet in communication with the APU and/or with the cooling unit, an air inlet door unit located at the air inlet, a first duct configured to draw air into the APU and having an entrance in communication with the air inlet, a second duct having an entrance in communication with the air inlet, the heat exchanger being at least partially located within the second duct, an air turbine located within the second duct downstream of the heat exchanger, and an electrical generator coupled to the air turbine.
Claims15
An auxiliary power unit system of an aircraft comprising:
- an auxiliary power unit (APU),
- a cooling unit for the APU comprising at least one heat exchanger,
- an air inlet in fluid communication with at least one of the APU or with the cooling unit,
- an air inlet door unit located at the air inlet to allow an air flow from outside the aircraft to enter the air inlet,
- a first duct configured to draw air into the APU and having an entrance in fluid communication with the air inlet,
- a second duct having an entrance in fluid communication with the air inlet,
- the heat exchanger being at least partially located within the second duct,
- an air turbine located within the second duct downstream the heat exchanger, and
- an electrical generator coupled to the air turbine so that the air turbine and the electrical generator are configured to convert energy of an air flow in the second duct into electrical energy.
Dependencies are inferred from the claim text.