Aircraft wheel

Patent metadata

Field	Value
Publication number	US-10744820-B2
Application number	US-201715591315-A
Country	US
Kind code	B2
Filing date	May 10, 2017
Priority date	May 11, 2016
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

An aircraft wheel including a rim (2) comprising two assembled-together rim halves (3a, 3b), each rim half (3a, 3b) having a bearing surface (7) extending in a plane perpendicular to an axis of rotation (X) of the aircraft wheel. The aircraft wheel further includes a spacer (9) situated between the two bearing surfaces (7) when the rim halves (3a, 3b) are assembled together.

First claim

The invention claimed is:

1. An aircraft wheel including:
a rim ( 2 ) comprising two assembled-together rim halves ( 3 a , 3 b ), each rim half ( 3 a , 3 b ) having a bearing surface ( 7 ) extending in a plane perpendicular to an axis of rotation (X) of the aircraft wheel, and
a spacer ( 9 ) situated between the two bearing surfaces ( 7 ) when the rim halves ( 3 a , 3 b ) are assembled together,
wherein the spacer is extended over a whole of each bearing surface so that the surface of the spacer ( 9 ) and the bearing surface ( 7 ) of each rim coincide.

2. The aircraft wheel according to claim 1 , wherein the spacer ( 9 ) is in the form of a flat ring.

3. The aircraft wheel according to claim 2 , wherein the spacer ( 9 ) includes undulations ( 10 ) oriented towards the center of the spacer, said spacer undulations extending over corresponding undulations ( 8 ) formed on a bearing surface of a rim half when the rim halves are assembled together.

4. The aircraft wheel according to claim 1 , wherein the spacer presents thickness lying in the range 0.05 mm to 0.25 mm.

5. The aircraft wheel according to claim 1 , wherein the spacer is held in angular position by an assembly bolt ( 12 ) for assembling together the rim halves, the assembly bolt extending through the spacer.

6. The aircraft wheel according to claim 1 , wherein the spacer comprises a plurality of portions, each forming a sector of the spacer.

7. The aircraft wheel according to claim 1 , wherein the spacer ( 9 ) presents stiffness in compression that is greater than or equal to 193,000 MPa.

8. The aircraft wheel according to claim 1 , wherein faces of the spacer ( 9 ) present a coefficient of friction lying in the range 0.12 to 0.18.

9. The aircraft wheel according to claim 1 , wherein faces of the spacer present a coefficient of friction that is greater than 0.19.

10. The aircraft wheel according to claim 1 , wherein faces of the spacer ( 6 ) present an arithmetic average roughness Ra that is less than 0.8.

11. The aircraft wheel according to claim 1 , wherein the spacer ( 9 ) is made of stainless steel.

12. The aircraft wheel according to claim 11 , wherein the stainless steel is of the X5CrNi18-10 (304L) type or of the X8CrNi18-08 type.

13. The aircraft wheel according to claim 1 , wherein the spacer ( 9 ) is made of an organic or synthetic material.

14. The aircraft wheel according to claim 1 , wherein the spacer ( 9 ) is in the form of a sticker.

15. The aircraft wheel according to claim 1 , wherein faces of the spacer are coated in diamond powder or in ceramic powder.

16. The aircraft wheel according to claim 1 , wherein the bearing surfaces ( 7 ) are treated with SAA type anodization.

17. The aircraft wheel according to claim 1 , wherein the bearing surfaces ( 7 ) are coated in a layer of primer paint and a layer of finish paint.

18. The aircraft wheel according to claim 1 , wherein the bearing surfaces ( 7 ) are protected by a coating for avoiding the formation of a galvanic couple, and including a lubricant.

Assignees

• Safran Landing Systems

Inventors

• Darsy Jerome
• Delayre Xavier
• Colonna Celine

Classifications

• B60B25/22

  Other apurtenances, e.g. for sealing the component parts enabling the use of tubeless tyres · CPC title

• B60B2900/141

  Corrosions · CPC title

• B60B2900/561

  Lubrication · CPC title

• B60B3/00

  Disc wheels, i.e. wheels with load-supporting disc body (non- metallic B60B5/00; wheel cover discs B60B7/00 {; disc wheels comprising rail-engaging elements B60B17/0006}) · CPC title

• B60B25/02 Primary

  Segmented rims, e.g. with segments arranged in sections; Connecting equipment, e.g. hinges; Insertable flange rings therefor · CPC title