Gas turbine engine airfoil frequency design

US10844727B1 · kind B1 · utility

Assignee

• RAYTHEON TECHNOLOGIES CORPORATION · US

Inventors

• Kurt R. Heinemann · North Berwick, US
• Sumin Tao · Mukilteo, US
• Christopher B. Jelks · Town of East Hartford, US
• Xuedong Zhou · Glastonbury, US
• Mark David Ring · York, US
• Konstantinos Panagiotis Giannakopoulos · Middletown, US
• Kate Hudon · Superior, US
• John Joseph Papalia · Middletown, US

Key dates

• Filing date: Jan 11, 2018
• Grant date: Nov 24, 2020
• Expiry date: Dec 8, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A turbomachine airfoil element includes an airfoil that has pressure and suction sides spaced apart from one another in a thickness direction and joined to one another at leading and trailing edges. The airfoil extends in a radial direction a span that is in a range of 3.68-3.98 inch (93.5-101.1 mm). A chord length extends in a chordwise direction from the leading edge to the trailing edge at 50% span is in a range of 1.75-2.05 inch (44.5-52.1 mm). The airfoil element includes at least two of a first mode with a frequency of 436±10% Hz, a second mode with a frequency of 1557±10% Hz, a third mode with a frequency of 1424±10% Hz, a fourth mode with a frequency of 1870±10% Hz, a fifth mode with a frequency of 3321±10% Hz and a sixth mode with a frequency of 3957±10% Hz.