# US 10,502,087 B2 · Assembly for controlling variable pitch vanes in a turbine engine

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- Number: US 10,502,087 B2
- Document ID: US10502087B2
- Status: Granted
- Kind: B2
- Application number: 15/645,504
- Filed: 2017-07-10
- Published: 2018-01-18
- Granted: 2019-12-10
- Earliest claimed: 2016-07-12
- Assignees: Safran Aircraft Engines
- Applicants: Safran Aircraft Engines
- Inventors: Kamel Benderradji; Blaise Bergon; Alain Marc Lucien Bromann; Suzanne Madeleine Coustillas; Lilian Yann Dumas
- Web page: https://patentgrep.com/patent/US10502087B2

## CPC

- F01D 17/141: {by means of shiftable members or valves obturating part of the flow path}
- F01D 9/041: {using blades (F01D5/148 takes precedence)}
- F01D 17/162: {for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line (F01D17/167 takes precedence)}
- F01D 17/26: fluid, e.g. hydraulic
- F04D 29/563: {specially adapted for elastic fluid pumps}
- F05D 2220/323: for aircraft propulsion, e.g. jet engines
- F05D 2250/241: spherical
- F05D 2260/50: Kinematic linkage, i.e. transmission of position
- Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An assembly for controlling variable pitch vanes in a turbine engine, the assembly comprising an actuating ring surrounding a casing of the turbine engine and connected by rods to variable pitch vanes. The actuating ring is configured to rotate around the casing. The assembly further includes a passive element including a first end sliding connected to a second end. The first end is connected by a sliding pivoting link on the actuating ring, and the second end is connected by a ball-joint link to the casing.

## Claims

### Claim 1

An assembly for controlling variable pitch vanes in a turbine engine, the assembly comprising:
an actuating ring surrounding a casing of the turbine engine and connected by rods to variable pitch vanes;
driving means for rotating the actuating ring around the casing; and
a passive element including a first end slidingly connected to a second end, wherein the first end of the passive element is connected by a sliding pivoting link on the actuating ring, and wherein the second end of the passive element is connected by a ball-joint link to the casing.

### Claim 2 (depends on 1)

The assembly of claim 1, wherein the passive element is arranged circumferentially substantially opposite the driving means of the actuating ring.

### Claim 3 (depends on 1)

The assembly of claim 1, wherein the passive element comprises a body bearing the first end and in which a pin bearing the second end is mounted for translational movement.

### Claim 4 (depends on 1)

The assembly of claim 1, wherein the first end of the passive element is mounted for rotation and translational movement around and according to a radial axis in a yoke of a first support element integral with the actuating ring.

### Claim 5 (depends on 4)

The assembly of claim 4, wherein the second end of the passive element is connected via the ball-joint link to a second support element integral with the casing.

### Claim 6 (depends on 5)

The assembly of claim 5, wherein the first support element is arranged axially downstream, or upstream respectively, from the rods and the second support element is arranged upstream, or downstream respectively, from the rods.

### Claim 7 (depends on 1)

The assembly of claim 1, wherein the second end of the passive element is connected via a flange of the casing.

### Claim 8 (depends on 1)

The assembly of claim 1, wherein the passive element is a braking cylinder.

### Claim 9 (depends on 8)

The assembly of claim 8, wherein the braking cylinder is a gas cylinder or a spring loaded cylinder.

### Claim 10 (depends on 1)

A turbine engine comprising the assembly of claim 1.

### Claim 11 (depends on 1)

The assembly of claim 1, wherein the first end comprises a body of a cylinder, and wherein the second end comprises a pin mounted in the body of the cylinder.