초록 ▼

The need for engine bleed air in a cabin pressurizing/ventilation ECS system for aircraft is avoided in a construction including a pressurizable aircraft cabin (10) having a cabin air inlet (20) and a cabin air outlet (22). The system includes a ram air inlet (34) and an aircraft exhaust air outlet

The need for engine bleed air in a cabin pressurizing/ventilation ECS system for aircraft is avoided in a construction including a pressurizable aircraft cabin (10) having a cabin air inlet (20) and a cabin air outlet (22). The system includes a ram air inlet (34) and an aircraft exhaust air outlet (42) along with a motor operated vapor compression cabin air cooling system (24) having an inlet (28) and an outlet (26). A turbomachine (40) includes a compressor (32) connected between the ram air inlet (34) and the cooling system inlet (28) along with a combustion turbine (38) and a power recovery turbine (41), both mechanically coupled to the compressor and connected between the aircraft exhaust air outlet (42) and the cabin air outlet (22). A motor/generator (36) is coupled to the compressor (32) and the turbines (38, 41) and is operable to drive the compressor (32) when operating as a motor and to be driven by the combustion turbine (38) when operating as a generator. A combustor (46) is connected to the combustion turbine (38) for selectively providing gasses of combustion to the combustion turbine (38) to drive the same and a heat exchanger includes a first fluid flow path (52) interconnecting the compressor (32) and the cabin (10) and a second fluid flow path (54) interconnecting the cabin (10) and the power recovery turbine (41).

대표청구항 ▼

[ I claim:] [1.] A multiple-mode auxiliary power unit based environmental control system for a pressurizable-cabin aircraft having a cabin air inlet and a cabin air outlet comprising:a ram air inlet;an environmental control system exhaust outlet;a cabin air cooling system including an inlet and an o

[ I claim:] [1.] A multiple-mode auxiliary power unit based environmental control system for a pressurizable-cabin aircraft having a cabin air inlet and a cabin air outlet comprising:a ram air inlet;an environmental control system exhaust outlet;a cabin air cooling system including an inlet and an outlet;said environmental control system exhaust outlet being connected to said cabin air inlet;a turbomachine including a compressor connected between said ram air inlet and said cooling system inlet, a combustion turbine and a power recovery turbine mechanically coupled to said compressor, said turbines being connected between said environmental control system exhaust outlet and said cabin air outlet;a motor generator coupled to said compressor and said turbines; anda combustor connected to said combustion turbine.