Method and system for feeding a cool air inlet of the cabin of an aircraft propelled by at least one jet engine
AssigneeDassault Aviation
InventorPaul Laugt
Life of this patent
Estimating the term…
Abstract
In accordance with this method, air bled from the engine is compressed in a turbocompressor (4) and the air compressed in this way is cooled in an exchanger (3) through which is passed air outside the aircraft, a turbine (5) of the turbocompressor (4) is fed with the air cooled in this way, and the cool air inlet (10) of the cabin is fed with the air leaving the turbine (5). In accordance with the invention, mechanical energy is extracted from the air leaving the cabin (11) of the aircraft and that mechanical energy is injected into the turbocompressor (4). Cooling energy is also extracted from the air leaving the cabin (11) and that cooling energy is injected into the air which is fed to the turbine (5).
Claims4
A method of feeding a cool air inlet of a cabin of an aircraft propelled by at least one jet engine, in which method air bled from said engine is compressed in a turbocompressor, the air compressed in this way is cooled in a heat exchanger through which air outside the aircraft passes, a turbine stage of said turbocompressor is fed with the air cooled in this way, said cool air inlet is fed with the air leaving said turbine stage, mechanical energy is extracted from the air leaving said cabin of the aircraft, said mechanical energy is injected into said turbocompressor by means of a second turbine stage coupled to the first turbine stage, and cooling energy is additionally extracted from said air leaving the cabin, said cooling energy being injected into said cooled air leaving said exchanger with the aid of a second heat exchanger and a third heat exchanger located respectively upstream and downstream of said second turbine stage.
Dependencies are inferred from the claim text.