Internal core profile for a turbine nozzle airfoil
US6994520B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2004 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Jun 30, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/211
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
First stage nozzle airfoils have internal core profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I wherein X, Y and Z values are in inches. The X and Y values are distances which, when connected by smooth continuing arcs, define internal core profile sections at each radial distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete internal core profile. The X, Y and Z distances may be scalable as a function of the same constant or number to provide a scaled-up or scaled-down internal core profile. The nominal internal core profile given by the X, Y and Z distances lies within an envelope of ±0.030 inches in directions normal to any internal core surface location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.