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Paramétrages

Paramétrages

1. US20170081018 - Stiffened hub for unshrouded propeller

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

Claims

1. The hub for an unducted propeller having variable-pitch blades of a turbine engine, comprising two parallel annular side walls between which are arranged rings which are distributed angularly in a regular manner around a longitudinal axis of the hub, which are connected to the annular side walls, and which comprise compartments which are designed to receive bearings having radial axes for guiding in rotation roots of blades of said propeller, said rings being connected in pairs by connection means which are arranged between the annular side walls and which comprise reinforcing partitions which are substantially radial with respect to the longitudinal axis of the hub, wherein at least some of said reinforcing partitions are connected to said annular side walls.
2. A hub according to claim 1, wherein the connection means comprise first reinforcing partitions bordering the side walls, and/or second reinforcing partitions bordering the rings, and/or third reinforcing partitions which define recesses between the rings.
3. A hub according to claim 2, wherein the connection means of two adjacent rings of the rings define a central recess and four peripheral recesses which are regularly distributed around the central recess.
4. A hub according to claim 3, wherein the central recess has a circular cross section and wherein each peripheral recess has a substantially trapezoidal cross section.
5. A hub according to claim 3, wherein the central recess has a cross section in the shape of a hexagon and in that each peripheral recess has a substantially triangular cross section.
6. A hub according to claim 2, wherein the connection means of two adjacent rings of the rings comprise at least two third partitions which cross each other and which define four main recesses.
7. A hub according to claim 6, wherein the third partitions are oriented either in the transverse and longitudinal directions or diagonally.
8. A hub according to claim 2, wherein the connection means of two adjacent rings of the rings comprise at least first partitions bordering the side walls, and at least second partitions bordering the rings.
9. A turbine engine, comprising at least one hub according to claim 1.