Turbine blade having improved flutter capability and increased turbine stage output

US10443389B2 · kind B2 · utility

Inventors

• Douglas James Dietrich · West Palm Beach, US
• Jeff Tessier · North Palm Beach, US
• Megan Burke · West Palm Beach, US
• Stephen Wayne Fiebiger · North Palm Beach, US
• Roy E. Struble · West Palm Beach, US
• Christopher Williams · Pittsburgh, US
• Alexander Vasili Rozendaal · North Palm Beach, US
• Lonnie Adolphus Houck, III · Stuart, US

Key dates

• Filing date: Nov 9, 2017
• Grant date: Oct 15, 2019
• Expiry date: May 2, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2300/611
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A turbine blade, airfoil, and rotor stage for a gas turbine engine is disclosed. The turbine blade, airfoil, and rotor stage each includes an uncoated airfoil profile in accordance with Cartesian coordinate values of X, Y, and Z disclosed herein. The resulting airfoil exhibits high flutter margins, thus enabling the gas turbine engine to be operated at an increased power output while avoiding operational limitations required in known gas turbine engines.