Gas turbine engine
US-2018087388-A1 · Mar 29, 2018 · US
Fan
US10724536B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10724536-B2 |
| Application number | US-201815898305-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 16, 2018 |
| Priority date | Feb 20, 2017 |
| Publication date | Jul 28, 2020 |
| Grant date | Jul 28, 2020 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A fan for a gas turbine engine, the fan comprising a first set of fan blades, each fan blade comprising a root and an axial retention feature provided on the root at a first position, and a second set of fan blades, each fan blade comprising a root and an axial retention feature provided on the root at a second position. Relative to the respective blade on which the respective retention feature is provided, the first position is different to the second position.
First claim
Opening claim text (preview).
We claim: 1. A fan for a gas turbine engine, the fan comprising: a first set of fan blades, each of the fan blades of the first set comprising one or more retention features on a pressure side and a suction side of a root of the blade, and wherein more retention features are provided on the pressure side than on the suction side of the blades of the first set; a second set of fan blades, each of the fan blades of the second set comprising one or more retention features on a pressure side and a suction side of a root of the blade, and wherein more retention features are provided on the suction side than on the pressure side of the blades of the second set; and, the axial retention features of the first set of fan blades and the second set of fan blades each comprise an integrally formed protrusion extending circumferentially or radially from a root of the respective blade, the protrusion having a chord length less than a root chord length of the respective fan blade; wherein each of the fan blades is mounted to a disc via a respective disc slot, each respective disc slot comprising a groove, and wherein the protrusion is received in the groove of the respective disc slot. 2. The fan according to claim 1 , wherein the first set of fan blades comprises two retention features provided on the pressure side of the blade and one retention feature provided on the suction side of the blade, and wherein the second set of fan blades comprises two retention features provided on the suction side of the blade and one retention feature provided on the pressure side of the blade. 3. The fan according to claim 2 , wherein one of the two retention features provided on the pressure side of each of the blades of the first set of blades is provided proximal to a leading edge and the other is provided proximal to a trailing edge, and the one retention feature provided on the suction side of the blade is provided in a mid-region between the leading and trailing edge of the blade; and wherein one of the two retention features provided on the suction side of each of the blades of the second set of blades is provided proximal to the leading edge and the other is provided proximal to the trailing edge, and the one retention feature provided on the pressure side of the blade is provided in a mid-region between the leading and trailing edge of the blade.
Assignees
Inventors
Classifications
- F01D5/10Primary
Anti- vibration means {(specially adapted for radial flow machines or engines F01D5/04)} · CPC title
specially adapted for the fan of turbofan engines · CPC title
Locking of axial insertion type blades by other means · CPC title
Retaining components in desired mutual position · CPC title
Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor · CPC title
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Frequently asked questions
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- What does patent US10724536B2 cover?
- A fan for a gas turbine engine, the fan comprising a first set of fan blades, each fan blade comprising a root and an axial retention feature provided on the root at a first position, and a second set of fan blades, each fan blade comprising a root and an axial retention feature provided on the root at a second position. Relative to the respective blade on which the respective retention feature…
- Who is the assignee on this patent?
- Rolls Royce Plc
- What technology area does this patent fall under?
- Primary CPC classification F01D5/10. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jul 28 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).