STRUCTURE FOR FEEDING AIR TO AN AUXILIARY POWER UNIT IN AN AIRCRAFT

摘要

The invention concerns a structure (3) for feeding air to an auxiliary power unit (2) of an aircraft (1) comprising a pressurized cabin (10) and an auxiliary power unit (2), the structure comprising: a pipe (30) for feeding air to the auxiliary power unit; a unit (4) for controlling the airflow fed to the auxiliary power unit; and a valve (31) for the intake of air outside the aircraft, disposed at the inlet of the feed pipe (30), the opening of the valve being driven by the control unit (4). The structure is characterized in that it further comprises a circuit (32) for injecting air from the pressurized cabin into the auxiliary power unit feed pipe. The invention also concerns a method for feeding air to an auxiliary power unit.

主权项

1. An architecture for supplying air to an auxiliary power unit of an aircraft, comprising a pressurized cabin and an auxiliary power unit of the type including a combustion chamber for fuel, the architecture including:
a duct for supplying air to the auxiliary power unit, a unit for controlling the flow of air supplied to the auxiliary power unit, and a valve for admitting air from outside the aircraft, positioned at the inlet to the supply duct, the opening of said valve being controlled by the control unit,the architecture being characterized in that it further includes a circuit for injecting air coming from the pressurized cabin into the supply duct of the auxiliary power unit.