Patent ID: 6585191
Filing Date: 2003-07-01
Classification: B64D,F02C,Y02T

Abstract:
An air inlet cowl for a jet engine, particularly an aeroengine, said air inlet cowl being provided with means for deicing its leading edge, and comprising:a hollow leading edge delimiting an internal peripheral chamber, closed by a first internal partition; at least one exhaust orifice placing said internal chamber in communication with the outside and made in said hollow leading edge; a pressurized hot air feedpipe capable of being connected, at its rear end away from said leading edge and passing through a second internal partition, to a pressurized hot air circuit and, at its front end toward said leading edge, to an injector injecting said pressurized hot air into said internal chamber of the leading edge; a protective internal casing collaborating with said first and second internal partitions to delimit an isolation volume enclosing said feedpipe; and an air extraction opening made in said first partition to place said isolation volume enclosing said feedpipe in communication with said internal peripheral chamber of said leading edge, the area of this extraction opening being chosen from a range of values such that, in the event of damage to said hot air feedpipe: the elimination of pressurized hot air in said isolation volume is not detrimental to said protective internal casing; and the injector injects into said internal chamber a pressurized hot air flow rate at least equal to 50% of the hot air flow rate in said feedpipe.