Bladeless fan structure
US-9222478-B2 · Dec 29, 2015 · US
Gas turbine engine including lift-off finger seals, lift-off finger seals, and method for the manufacture thereof
US9033657B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9033657-B2 |
| Application number | US-201113316922-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 12, 2011 |
| Priority date | Dec 12, 2011 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
Embodiments of a gas turbine engine including a lift-off finger seal are provided, as are embodiments of a lift-off finger seal and embodiments of a method for the manufacture thereof. In one embodiment, the gas turbine engine includes an engine housing having low and high pressure cavities, a shaft rotatably mounted in the engine housing, and a lift-off finger seal. The lift-off finger seal includes an finger seal backing spring and an aerodynamic foil. The aerodynamic foil extends around the outer circumference of the shaft and is configured to expand radially outward in response to aerodynamic forces generated during rotation of the shaft. The finger seal backing spring resiliently biases the aerodynamic foil toward the shaft, deflects to accommodate the outward radial expansion of the aerodynamic foil, and forms an annular seal around the aerodynamic foil to impede pressurized airflow from the high to low pressure zone.
First claim
Opening claim text (preview).
What is claimed is: 1. A gas turbine engine, comprising: an engine housing containing a high pressure zone and a low pressure zone during operation of the gas turbine engine; a shaft rotatably mounted in the engine housing and extending from the low pressure zone to the high pressure zone; and a lift-off finger seal, comprising: an aerodynamic foil extending around the outer circumference of the shaft and configured to expand radially outward in response to aerodynamic forces…
Assignees
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Classifications
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F04D29/057Primary
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9033657B2 cover?
- Embodiments of a gas turbine engine including a lift-off finger seal are provided, as are embodiments of a lift-off finger seal and embodiments of a method for the manufacture thereof. In one embodiment, the gas turbine engine includes an engine housing having low and high pressure cavities, a shaft rotatably mounted in the engine housing, and a lift-off finger seal. The lift-off finger seal in…
- Who is the assignee on this patent?
- Gibson Nathan, Honeywell Int Inc
- What technology area does this patent fall under?
- Primary CPC classification F04D29/057. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 19 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).