Low noise turbine for geared gas turbine engine
US10605172B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 20, 2013 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Nov 11, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a turbine section including a fan drive turbine, a compressor section driven by the turbine section, a geared architecture driven by the fan drive turbine, and a fan driven by the fan drive turbine via the geared architecture. At least one stage of the turbine section includes an array of rotatable blades and an array of vanes. A ratio of the number of vanes to the number blades is greater than or equal to about 1.55. A mechanical tip rotational Mach number of the blades is configured to be greater than or equal to about 0.5 at an approach speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.