Turbine airfoil fabricated from tapered extrusions
Abstract
An airfoil (30) and fabrication process for turbine blades with cooling channels (26). Tapered tubes (32A-32D) are bonded together in a parallel sequence, forming a leading edge (21), a trailing edge (22), and pressure and suction side walls (23, 24) connected by internal ribs (25). The tapered tubes may be extruded without camber to simplify the extrusion process, then bonded along matching surfaces (34), forming a non-cambered airfoil (28), which may be cambered in a hot forming process and cut (48) to length. The tubes may have tapered walls that are thinner at the blade tip (T1) than at the base (T2), reducing mass. A cap (50) may be attached to the blade tip. A mounting lug (58) may be forged (60) on the airfoil base and then machined, completing the blade for mounting in a turbine rotor disk.
- Inventors:
- Issue Date:
- Research Org.:
- Siemens Energy, Inc. (Orlando, FL)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1087894
- Patent Number(s):
- 8485787
- Application Number:
- 12/555,096
- Assignee:
- Siemens Energy, Inc. (Orlando, FL)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL B21C - MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING
B - PERFORMING OPERATIONS B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL B21J - FORGING
- DOE Contract Number:
- FC26-05NT42644
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 33 ADVANCED PROPULSION SYSTEMS
Citation Formats
Marra, John J. Turbine airfoil fabricated from tapered extrusions. United States: N. p., 2013.
Web.
Marra, John J. Turbine airfoil fabricated from tapered extrusions. United States.
Marra, John J. Tue .
"Turbine airfoil fabricated from tapered extrusions". United States. https://www.osti.gov/servlets/purl/1087894.
@article{osti_1087894,
title = {Turbine airfoil fabricated from tapered extrusions},
author = {Marra, John J},
abstractNote = {An airfoil (30) and fabrication process for turbine blades with cooling channels (26). Tapered tubes (32A-32D) are bonded together in a parallel sequence, forming a leading edge (21), a trailing edge (22), and pressure and suction side walls (23, 24) connected by internal ribs (25). The tapered tubes may be extruded without camber to simplify the extrusion process, then bonded along matching surfaces (34), forming a non-cambered airfoil (28), which may be cambered in a hot forming process and cut (48) to length. The tubes may have tapered walls that are thinner at the blade tip (T1) than at the base (T2), reducing mass. A cap (50) may be attached to the blade tip. A mounting lug (58) may be forged (60) on the airfoil base and then machined, completing the blade for mounting in a turbine rotor disk.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {7}
}
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Works referenced in this record:
Method of Producing Ceramic Bodies Having Longitudinal Passages
patent, May 1950
- Stopka, Viktor
- US Patent Document 2506244
Method of making a SPF/DB hollow core fan blade
patent, January 1995
- Velicki, Alexander
- US Patent Document 5,384,959
Press for Making Workpieces Tapering in Longitudinal Direction
patent, December 1944
- Manken, Wilhelm; Uhlmann, Otto
- US Patent Document 2365482
Ceramic matrix composite structure having integral cooling passages and method of manufacture
patent, June 2004
- Morrison, Jay A.; Butner, Steven C.; Campbell, Christian X.
- US Patent Document 6,746,755
SPF/DB airfoil-shaped structure and method of fabrication thereof
patent, August 1999
- Yasui, Ken
- US Patent Document 5,941,446
Photoetched cooling slots for diffusion bonded airfoils
patent, January 1993
- Damlis, Nicholas; Martus, James A.; Goldman, Edward H.
- US Patent Document 5,176,499
Process for making ceramic bodies with open channels
patent, March 1989
- Butcher, Kenneth R.
- US Patent Document 4,814,029
Method for Fabricating Hollow Gas Turbine Blades
patent, November 1971
- Wagle, Joseph A.
- US Patent Document 3623204
Variable section extrusion die set and variable extrusion molding method
patent, November 1999
- Kato, Masatsugu; Sano, Shigeo; Hiyoshi, Yasumasa
- US Patent Document 5,989,466
Vertical axis wind turbine with pultruded blades
patent, March 1996
- Wallace, Vernon R.; McMullen, Michael S.; Archibald, William R.
- US Patent Document 5,499,904
Thin wall cooling system
patent, November 2002
- Chung, Vincent; Ortiz, Milton; Poon, Kin
- US Patent Document 6,478,535