Title:
GAS TURBINE BLADE AND METHOD FOR PRODUCING SUCH BLADE
Document Type and Number:
WIPO Patent Application WO/2019/194878
Kind Code:
A3
Abstract:
The present invention relates to a gas turbine blade (1) having a casted metal airfoil (2), said airfoil (2) comprising a main wall defining at least one interior cavity (9), having a first side wall (3) and a second side wall (4), which are coupled to each other at a leading edge (5) and a trailing edge (6), extending in a radial direction from a blade root (7) to a blade tip (8) and defining a radial span from 0% at the blade root (7) to 100% at the blade tip (8), wherein said main airfoil (2) has a radial span dependent chord length defined by a straight line connecting the leading edge (5) and the trailing edge (6) as well as a radial span dependent solidity ratio of metal area to total cross-sectional area, characterized in that solidity ratios in a machined zone of the airfoil (2) from 80% to 85% of span are below 35%, in particular all solidity ratios in said zone.
Inventors:
ESHAK DANIEL M (US)
KAMENZKY SUSANNE (DE)
LOHAUS ANDREW (DE)
VOHRINGER DANIEL (DE)
MILLER JR (US)
KAMENZKY SUSANNE (DE)
LOHAUS ANDREW (DE)
VOHRINGER DANIEL (DE)
MILLER JR (US)
Application Number:
PCT/US2019/012672
Publication Date:
November 21, 2019
Filing Date:
January 08, 2019
Export Citation:
Assignee:
SIEMENS AG (DE)
SIEMENS ENERGY INC (US)
SIEMENS ENERGY INC (US)
International Classes:
F01D5/14; F01D5/18
Foreign References:
| US8720526B1 | 2014-05-13 | |||
| US20160237827A1 | 2016-08-18 | |||
| DE1007565B | 1957-05-02 | |||
| US6257828B1 | 2001-07-10 |
Attorney, Agent or Firm:
BASU, Rana (US)
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