Platform for a fan assembly

1 . A platform for a bladed wheel,

the platform comprising a flow passage wall extending in an axial direction,

the flow passage wall having an upstream end and a downstream end and comprising two axial stiffeners,

the platform comprising radial retention means positioned at the upstream end and at the downstream end of the flow passage wall, the radial retention means being configured to each define a sliding connection with a corresponding shroud of the bladed wheel,

the platform comprising tangential retention means configured to define a slide connection between the platform and a disc of the bladed wheel,

the slide connection having an axis of rotation parallel to the axial direction, and

wherein the platform is in sliding connection along the axial direction relative to the disc of the bladed wheel.

2 . The platform according to claim 1 , wherein the tangential retention means comprise a pin and a tab having a drilled hole configured for receiving the pin such that the assembly of the tab and the pin forms the sliding pivot connection.

3 . The platform according to claim 2 , wherein the tab is attached to the flow passage wall and the pin is configured for being attached to the disc of the bladed wheel.

4 . The platform according to claim 1 ,

wherein the radial retention means comprise an upstream circumferential land and a downstream circumferential land,

the upstream circumferential land and the downstream circumferential land being configured for being respectively engaged in a corresponding upstream shroud and a corresponding downstream shroud of the bladed wheel.

5 . The platform according to claim 1 wherein the flow passage and the stiffeners are made of composite materials.

6 . An assembly,

the assembly comprising:

a bladed wheel,

and a platform according to claim 3 ,

wherein the platform is received in the disc, and

the disc has a fitting in which is attached the pin that is configured to be engaged in sliding pivot connection in the tab of the platform.

7 . An assembly,

the assembly comprising:

a bladed wheel and a platform according to claim 4 ,

wherein the platform is received in the disc,

the disc assembly comprising at least the downstream shroud receiving the downstream circumferential land and at least the upstream shroud receiving the upstream circumferential land.

8 . A turbomachine comprising at least one disc assembly according to claim 7 .

9 . An aircraft comprising at least one turbomachine according to claim 8 .

10 . A platform for a bladed wheel,

the platform comprising a flow passage wall extending in an axial direction,

the flow passage wall having an upstream end and a downstream end and comprising two axial stiffeners,

the platform comprising radial retention means positioned at the upstream end and at the downstream end of the flow passage wall, the radial retention means being configured to each define a sliding connection with a corresponding shroud of the bladed wheel,

the platform comprising a single tangential retention means configured to define a slide connection between the platform and a disc of the bladed wheel,

the slide connection having an axis of rotation parallel to the axial direction, and

wherein the platform is in sliding connection along the axial direction relative to the disc of the bladed wheel.

11 . A platform for a bladed wheel,

the platform comprising a flow passage wall extending in an axial direction,

the flow passage wall having an upstream end and a downstream end and comprising two axial stiffeners,

the platform comprising radial retention means positioned at the upstream end and at the downstream end of the flow passage wall, the radial retention means being configured to each define a sliding connection with a corresponding shroud of the bladed wheel,

the platform comprising a tangential retention means configured to define a slide connection between the platform and a disc of the bladed wheel, the slide connection having an axis of rotation parallel to the axial direction, and

wherein the platform is in sliding connection along the axial direction relative to the disc of the bladed wheel, and

wherein the tangential retention means comprise a support fixed to the disc, a pin extended radially from the support and a tab having a drilled hole configured to insert on the pin such that the assembly of the tab and the pin forms the sliding pivot connection.

12 . A platform for a bladed wheel according to claim 11 ,

the platform comprising a flow passage wall extending in an axial direction,

the flow passage wall having an upstream end and a downstream end and comprising two axial stiffeners,

the platform comprising radial retention means positioned at the upstream end and at the downstream end of the flow passage wall, the radial retention means being configured to each define a sliding connection with a corresponding shroud of the bladed wheel,

the platform comprising a single tangential retention means configured to define a slide connection between the platform and a disc of the bladed wheel, the slide connection having an axis of rotation parallel to the axial direction, and

wherein the platform is in sliding connection along the axial direction relative to the disc of the bladed wheel, and

wherein the tangential retention means comprise a support fixed to the disc, a pin extended radially from the support and a tab having a drilled hole configured to insert on the pin such that the assembly of the tab and the pin forms the sliding pivot connection.