초록 ▼

A bypass duct sealing grommet, for sealing between an opening in a gas turbine engine bypass duct wall and the external surface of a projection extending through the opening, where the grommet has an annular body with a central aperture having an interior periphery adapted to sealingly engage the ex

A bypass duct sealing grommet, for sealing between an opening in a gas turbine engine bypass duct wall and the external surface of a projection extending through the opening, where the grommet has an annular body with a central aperture having an interior periphery adapted to sealingly engage the external surface of the projection. A first flange and second flanges define an external slot about an exterior periphery of the body adapted to receive and seal the bypass duct wall between the flanges.

대표청구항 ▼

1. In a gas turbine engine, having: a bypass duct wall having an opening therethrough; and a projection extending through the opening, the projection having an external surface, the improvement comprising:a bypass duct sealing grommet, for sealing between the opening and the external surface of the

1. In a gas turbine engine, having: a bypass duct wall having an opening therethrough; and a projection extending through the opening, the projection having an external surface, the improvement comprising:a bypass duct sealing grommet, for sealing between the opening and the external surface of the projection extending through the opening, the grommet comprising: an annular body having: a central aperture with an interior periphery adapted to sealingly engage the external surface of the projection; a first flange and a second flange defining an external slot about an exterior periphery of the body adapted to receive and seal the bypass duct wall between the flanges. 2. A bypass duct sealing grommet according to claim 1 wherein: the bypass duct wall has a radial curvature and an axial curvature; the projection has an axis; and the annular body has a cross-sectional profile symmetric about the axis of the projection.3. A bypass duct sealing grommet according to claim 1 wherein the projection has an axis, and the annular body has a cross-sectional profile symmetric about the external slot, and symmetric about the axis of the projection.4. A bypass duct sealing grommet according to claim 3 wherein the cross-sectional profile of the annular body is trapezoidal.5. A bypass duct sealing grommet according to claim 1 wherein the body includes a collar connecting the first and second flanges.6. A bypass duct sealing grommet according to claim 4 wherein the flanges have a tapered profile.7. A bypass duct sealing grommet according to claim 5 wherein the collar, flanges and opening in the bypass duct wall define an annular clearance gap therebetween.8. A bypass sealing grommet according to claim 1 wherein the projection has an axis, and the annular body comprises an elongate sealing strip of cross-sectional profile symmetric about the axis of the projection, said elongate sealing strip having a first end and a mating second end abutting at a joint.9. A gas turbine engine, comprising:a bypass duct wall having an opening therethrough; a projection extending through the opening, the projection having an external surface; a bypass duct sealing grommet comprising an annular body having: a central aperture with an interior periphery adapted to sealingly engage the external surface of the projection; a first flange and a second flange defining an external slot about an exterior periphery of the body adapted to receive and seal the bypass duct wall between the flanges. 10. A gas turbine engine according to claim 9 wherein: the bypass duct wall has a radial curvature; the projection has an axis; and an axial curvature; and the annular body has a cross-sectional profile symmetric about the axis of the projection.11. A gas turbine engine according to claim 9 wherein the projection has an axis; and the annular body has a cross-sectional profile symmetric about the external slot, and symmetric about the axis of the projection.12. A gas turbine engine according to claim 11 wherein the cross-sectional profile of the annular body is trapezoidal.13. A gas turbine engine according to claim 9 wherein the body includes a collar connecting the first and second flanges.14. A gas turbine engine according to claim 12 wherein the flanges have a tapered profile.15. A gas turbine engine according to claim 13 wherein the collar, flanges and opening in the bypass duct wall define an annular clearance gap therebetween.16. A gas turbine engine according to claim 9 wherein the projection has an axis, and the annular body comprises an elongate sealing strip of cross-sectional profile symmetric about the axis of the projection, said elongate sealing strip having a first end and a mating second end abutting at joint.