公开(公告)号：US20200232344A1

公开(公告)日：2020-07-23

申请号：US16743077

申请日：2020-01-15

Applicant: Airbus Operations SAS

Inventor： Julien FERREIRA ,  Vincent TROCELLIER ,  Sandrine ANDRE ,  Michael KILKENNY

IPC: F01D25/30 ,  F02K1/80 ,  F01N13/08

Abstract: An internal structure of a primary exhaust duct of a turbomachine, the internal structure comprising a primary wall comprising a surface of revolution about a longitudinal axis, allowing the air to pass through orifices and forming an internal surface of the primary exhaust duct, an interior skin comprising a surface of revolution about the longitudinal axis, arranged inside the primary wall, an upstream flange and a downstream flange which attach the interior skin to the interior of the primary wall, at least one separator which is attached to the interior skin and which extends from the interior skin towards the primary wall, the, or each, separator extends in a plane generally parallel to the longitudinal axis, between the two flanges, and the, or each, separator is not attached to the primary wall.

公开(公告)号：US20190162079A1

公开(公告)日：2019-05-30

申请号：US16195142

申请日：2018-11-19

Applicant: Airbus Operations SAS

Inventor： Laurent BERTANDEAU ,  Grégory DE OLIVEIRA ,  Erwan KRIER ,  Sandrine ANDRE ,  Morad KASSEM ,  Michael KILKENNY

IPC: F01D25/30 ,  F02K1/04 ,  F01D25/28 ,  B64D33/04

Abstract: An internal structure of a primary exhaust duct of a turbomachine. The internal structure comprises a primary wall comprising a surface of revolution, allowing air to pass through the orifices and forming an internal surface of the primary exhaust duct, an interior skin, comprising a surface of revolution, arranged inside the primary wall and extending between an upstream flank for facing toward the front of the turbomachine and a downstream flank for facing toward the rear of the turbomachine, and a plurality of spacers angularly distributed around a periphery of the interior skin and fixed between the primary wall and the interior skin. The particular way in which the interior wall is fixed makes the internal structure easier to construct and allows attenuation of noise at chosen frequencies.

公开(公告)号：US20210262364A1

公开(公告)日：2021-08-26

申请号：US17181566

申请日：2021-02-22

Applicant: Airbus Operations SAS

Inventor： Sandrine ANDRE ,  Vincent TROCELLIER ,  Julien FERREIRA ,  Michael KILKENNY

IPC: F01D25/30 ,  F01D9/06 ,  F01D25/28 ,  F02K1/34

Abstract: An internal structure of a primary exhaust duct of a turbomachine, which has a primary wall allowing air to pass through orifices and forming an internal surface of the primary exhaust duct, an interior skin arranged inside the primary wall, and at least one separator of which a first edge region is attached to the interior skin and which has two geometries. A change from the first geometry to the second takes place when the temperature of the separator exceeds a first temperature, and the change from the second to the first takes place when the temperature of the separator drops below a second temperature. The coefficient of expansion of the separator is greater than that of the interior skin. The variation in the geometry of the separators depending on the temperature of the engine eases assembly at ambient temperature due to the compression of the separators.