Gas turbine engine airfoil
US9140127B2 · kind B2 · utility
13Cited by
43References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2015 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Feb 19, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An airfoil of a turbine engine includes pressure and suction sides that extend in a radial direction from a 0% span position at an inner flow path location to a 100% span position at an airfoil tip. The airfoil has a relationship between a tangential stacking offset and a span position that is at least a third order polynomial curve that includes at least one positive and negative slope. The positive slope leans toward the suction side and the negative slope leans toward the pressure side. An initial slope starting at the 0% span position is either zero or positive. The first critical point is in the range of 5-15% span.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.