CMC vane arc segment with cantilevered spar
US11448075B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 2020 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane arc segment includes a hollow ceramic airfoil section that has walls that define an internal cavity, a trailing edge, a leading edge, a pressure side, and a suction side. A structural spar piece supports the hollow ceramic airfoil section. The spar piece includes a first spar platform, a hollow leg that has a proximal end at the spar platform and an opposed distal end. The hollow leg extends into the internal cavity of the hollow ceramic airfoil section and has an outer surface with raised bearing pads. Multiple ones of the bearing pads contact the walls of the hollow ceramic airfoil section to support the hollow ceramic airfoil section. A second spar platform is secured with the distal end of the leg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.