NACELLE AIR INTAKE PROVIDED WITH A MIXED ICE PROTECTION SYSTEM

    公开(公告)号:US20220282669A1

    公开(公告)日:2022-09-08

    申请号:US17684667

    申请日:2022-03-02

    Abstract: An optimized protection against ice on the inner and outer faces of an aircraft engine nacelle air intake with the air intake including an outer face and an inner face meeting at a line at the longitudinally extreme, called extremum line, an acoustic panel being installed on the inner surface of a part of the inner face. An elimination system based on vibration of the ice formed is put in place on at least a part of the outer face and an ice formation prevention system using a hot fluid is put in place on at least a part of the inner face and either an ice elimination system or an ice formation prevention system using a hot fluid is installed on the inner face and on the outer face, a marking line marking the boundary between the two systems.

    AIR INLET, NACELLE, PROPULSIVE ASSEMBLY AND AIRCRAFT WITH GROOVED LIP

    公开(公告)号:US20210078718A1

    公开(公告)日:2021-03-18

    申请号:US17017482

    申请日:2020-09-10

    Abstract: An air inlet for an aircraft nacelle, including a lip and a front frame, which together form a duct with D-shaped section receiving hot air. The front frame is arranged in an advanced position inside the lip. The lip has de-icing grooves, which communicate with the duct and extend essentially downstream of the front frame. Downstream of the front frame, outside of the de-icing grooves, the lip has perforated zones provided with sound absorption holes. The air inlet includes a foil, which hermetically seals the de-icing grooves and is provided with sound absorption holes facing the perforated zones. The air inlet comprises acoustic panels inside the lip downstream of the front frame. The advanced position of the front frame, due to the de-icing grooves which ensure the de-icing of the lip downstream of the front frame, allows the acoustic treatment surface of the air inlet to be increased.

    MODULE ENSURING AN ATTENUATION OF SOUND WAVES AND A HEAT EXCHANGE

    公开(公告)号:US20230138228A1

    公开(公告)日:2023-05-04

    申请号:US17979023

    申请日:2022-11-02

    Abstract: A module ensuring an acoustic attenuation of a flow of a first fluid and a heat exchange between the first fluid and a second fluid. The module comprises a perforated first wall with a cutout, a second wall, a cellular structure extending from the second wall to the first wall, a recess provided in the cellular structure between a perforated bottom and a perforated top, and a heat exchanger which is fixed inside the recess between the bottom and the top and in which the second fluid circulates. Such a module ensures an attenuation of sound waves and a heat exchange without limiting the attenuation surface.

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