Rotor blades for turbine engines

US8157504B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Sergio Daniel Marques Amaral · Simpsonville, US
• Michael Sullivan · Woodstock, US
• Xiuzhang James Zhang · Simpsonville, US
• Gary Michael Itzel · Schenectady, US
• Felipe Roman-Morales · Simpsonville, US
• Scott Edmond Ellis · Easley, US

Key dates

• Filing date: Apr 17, 2009
• Grant date: Apr 17, 2012
• Expiry date: Jul 29, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2240/304
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A blade tip of a turbine rotor blade for a gas turbine engine, the turbine rotor blade including an airfoil and a root portion for mounting the airfoil along a radial axis to a rotor disk inboard of a turbine shroud, a pressure sidewall and a suction sidewall that join together at a leading edge and a trailing edge, the pressure sidewall and suction sidewall extending from the root portion to the blade tip, and a squealer tip cavity formed at the blade tip, the blade tip comprising: a trailing edge trench originating at the squealer tip cavity, wherein the trailing edge trench generally extends toward the trailing edge of the blade tip.