Composite retention feature
US-9506356-B2 · Nov 29, 2016 · US
Fan blade attachment root with improved strain response
US10801515B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10801515-B2 |
| Application number | US-201916245484-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 11, 2019 |
| Priority date | May 27, 2015 |
| Publication date | Oct 13, 2020 |
| Grant date | Oct 13, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A fan blade is provided and comprises a leading edge, an attachment root extending aft of the leading edge, and a trench formed in a surface of the attachment root. An attachment root is also provided. The attachment root comprises a leading edge, a dovetail extending aft of the leading edge, and a trench formed in a surface of the dovetail. A gas turbine engine is also provided. The gas turbine engine comprises a compressor section configured to rotate about an axis, a combustor aft of the compressor section, and a turbine section aft of the compressor section and configured to rotate about the axis. A fan may be disposed forward of the turbine section and include a blade. The blade may have a trench formed in an attachment root.
First claim
Opening claim text (preview).
What is claimed is: 1. A fan blade, comprising: a leading edge; an attachment root extending aft of the leading edge with an axis running from the leading edge to an aft end; and a trench formed in a bottom surface of the attachment root, wherein the trench is offset from the leading edge, wherein the trench extends aft from a first end proximal the leading edge to an end surface distal from the leading edge, wherein the end surface is disposed at an interior area of the bottom surface of the attachment root, wherein a first axial length of the trench is less than a second axial length of the attachment root, wherein the first axial length of the trench is at least half or less than the second axial length of the attachment root, wherein the trench includes a continuous trench bottom. 2. An attachment root, comprising: a leading edge; a dovetail extending aft of the leading edge with an axis running from the leading edge to an aft end; and a trench formed in a bottom surface of the dovetail, wherein the trench is offset from the leading edge, wherein the trench extends aft from a first end proximal the leading edge to an end surface distal from the leading edge, wherein the end surface is disposed at an interior area of the bottom surface of the attachment root, wherein a first axial length of the trench is less than a second axial length of the attachment root, wherein the first axial length of the trench is at least half or less than the second axial length of the attachment root, wherein the trench includes a continuous trench bottom.
Assignees
Inventors
Classifications
- F04D29/322Primary
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Frequently asked questions
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- What does patent US10801515B2 cover?
- A fan blade is provided and comprises a leading edge, an attachment root extending aft of the leading edge, and a trench formed in a surface of the attachment root. An attachment root is also provided. The attachment root comprises a leading edge, a dovetail extending aft of the leading edge, and a trench formed in a surface of the dovetail. A gas turbine engine is also provided. The gas turbin…
- Who is the assignee on this patent?
- United Technologies Corp, Raytheon Tech Corp
- What technology area does this patent fall under?
- Primary CPC classification F04D29/322. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 13 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).