Nicholas R Martin

US Patent:

20110033311, Feb 10, 2011

Filed:

Aug 6, 2009

Appl. No.:

12/536869

Inventors:

Nicholas F. Martin - Winter Park FL, US
John J. Marra - Winter Springs FL, US

International Classification:

F01D 5/18

US Classification:

416 97 R

Abstract:

A cooling system for a turbine airfoil having at least one pin fin with a dimpled outer surface is disclosed. The dimpled outer surface increases the cooling efficiency of the pin fin, which creates numerous efficiencies, including thermal efficiencies, manufacturing efficiencies and the like. The dimples may be formed from shapes including, but not limited to, circular, oval, racetrack, and hemispherical. The dimples may be aligned in a variety of configurations.

US Patent:

20110268564, Nov 3, 2011

Filed:

Sep 10, 2009

Appl. No.:

13/127604

Inventors:

Nicholas F. Martin - Winter Park FL, US
Christoph Schiefer - Mulheim an der Ruhr, DE
Peter Schroder - Essen, DE
Bernd Van Den Toorn - Mulheim an der Ruhr, DE

International Classification:

F01D 5/08

US Classification:

415180

Abstract:

A turbine rotor is provided. The turbine rotor has a plurality of blades assembled into blade rows and arranged on a turbine disk. Each blade has a blade root arranged in a blade retaining slot of the turbine disk extending in an axial direction. A locking plate is arranged between the respective blade root and a base of the blade retaining slot, for securing blades against a displacement along the blade retaining slot. The locking plate is fixed to the turbine disk by folds. The locking plate comprises a plurality of cooling air holes for the passage of cooling medium from a cooling air feed passage. The respective blade root comprises two grooves extending substantially azimuthally in relation to a turbine axis, and the respective locking plate comprises two tongues which are arranged such that they are connected to the two grooves of the blade root for sealing.