Composite blade for a turbine engine rotor
US12030616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2021 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Feb 12, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a composite blade (5) for a turbine engine rotor, for example, an unducted propeller, comprising a skin (6) made of woven fibres forming the outer profile of the blade and an attachment (11) with cylindrical geometry in the direction of the span emerging from the blade root (9), which attachment is intended to retain the blade (5) on a hub of the rotor, characterised in that it further comprises a spar (16) having a hollow tube structure made of braided carbon fibres, fixed to the attachment (11) and extending inside the skin (6) over at least part of the span of the blade (5). The invention also relates to a propeller comprising said blade and to a method for manufacturing said blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.