Method of inspection for cooling holes in turbine airfoil
US9470605B2 · kind B2 · utility
3Cited by
1References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2014 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Jun 26, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/83
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An airfoil has an of internal cooling channel, and cooling holes extending from the internal cooling channel to an outer skin. Air is injected into the cooling channel, and then into an inlet of the cooling hole. The exit of the air from an outlet of the cooling hole at the outer skin is monitored to determine whether the outlet is blocked. A location of the inlet of the cooling hole is determined by utilizing the determined location of the outlet, in combination with a known angle through which the cooling hole extends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.