公开(公告)号：US20210138604A1

公开(公告)日：2021-05-13

申请号：US16676801

申请日：2019-11-07

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Hugo BINETTE ,  Sébastien DUMONT ,  Lauraleigh NONIS ,  Ehsan FARVARDIN ,  Bernadette MASON

IPC: B24B23/08 ,  B23C3/02 ,  F01D11/12 ,  B23B3/26

Abstract: A tool for shaping an abradable liner of a turbofan engine is disclosed. The turbofan engine includes a shaft to support a fan rotatable about a rotation axis. The abradable liner is configured to surround the fan and has an axial length in the direction of the rotation axis. The tool includes a support configured to be mounted to the shaft and rotatable about the rotation axis. The shaping head is mounted to the support for rotation about the rotation axis and configured to shape the abradable liner by removing material from the abradable liner. A radial position of the shaping head is adjustable relative to the rotation axis. The shaping head may sized to extend substantially across the axial length of the abradable liner.

公开(公告)号：US20180172026A1

公开(公告)日：2018-06-21

申请号：US15381420

申请日：2016-12-16

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Tibor URAC ,  Bernadette MASON

IPC: F04D29/54 ,  F04D29/52 ,  F04D29/08 ,  F04D29/64 ,  F02K3/06

CPC classification number: F04D29/542 ,  F01D9/042 ,  F01D11/005 ,  F04D29/083 ,  F04D29/644 ,  F05D2220/32 ,  F05D2300/121 ,  F05D2300/43 ,  F05D2300/501

Abstract: A seal spacer for a gas turbine engine to provide sealing between a casing wall and a stator vane of the engine. The seal spacer comprises a circumferential body having a slot defined therethrough and configured to receive the stator vane therein. The circumferential body is configured to be disposed between and space apart the engine casing wall from a head of the stator vane when the vane is inserted in the slot and the vane is inserted in the opening in the casing wall. The circumferential body includes a support positioned to be engage and provide a gap between the casing wall and the head when the seal spacer is installed therebetween, and an elastomeric seal portion positioned to engage and compressingly provide sealing the casing wall and the head when the seal spacer is installed therebetween to seal the gap.

公开(公告)号：US20230138438A1

公开(公告)日：2023-05-04

申请号：US17452927

申请日：2021-10-29

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Bernadette MASON ,  Gennadii DOROZHKIN ,  Jesse ALBUS ,  Tibor URAC

IPC: F01D25/24 ,  F04D29/52

Abstract: A support plate for an engine casing includes an anti-rotation rib abutting an outer flange wall of the casing and a misalignment tab extending radially outwardly from the anti-rotation rib. The support plate has a support plate hole configured to be aligned with one flange hole of a flange of the casing.

公开(公告)号：US20180156235A1

公开(公告)日：2018-06-07

申请号：US15370497

申请日：2016-12-06

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Yau-Wai LI ,  Peter TOWNSEND ,  Ronald DUTTON ,  Bernadette MASON

IPC: F04D29/54 ,  F02K3/06 ,  F04D29/32

CPC classification number: F04D29/542 ,  F01D9/041 ,  F02K3/06 ,  F04D29/666 ,  F05D2230/60

Abstract: A turbofan engine is disclosed having a bypass duct with an asymmetry in aerodynamic profile caused by a local obstruction in the bypass duct. The engine comprises stator vanes circumferentially spaced-apart around a circumference of the bypass duct. A first group of adjacent stator vanes includes a majority of the plurality of stator vanes and are arranged in a first circumferential sector of the bypass duct and have equal stagger angles. A second group of adjacent stator vanes includes a minority of the plurality of stator vanes and are arranged in a second circumferential sector circumferentially positioned relative to the local obstruction. The stator vanes of the second group have stagger angles different from the stagger angles of the stator vanes of the first group.