Gas turbine engine airfoil frequency design

US11236616B1 · 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: Feb 1, 2022
• Expiry date: Jan 11, 2039

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 4.47-4.77 inch (113.5-121.2 mm). A chord length extends in a chordwise direction from the leading edge to the trailing edge at 50% span and is in a range of 2.57-2.87 inch (65.3-72.9 mm). The airfoil element includes at least two of a first mode with a frequency of 297±10% Hz, a second mode with a frequency of 1035±10% Hz, a third mode with a frequency of 1488±10% Hz, a fourth mode with a frequency of 1524±10% Hz, a fifth mode with a frequency of 2855±10% Hz and a sixth mode with a frequency of 4462±10% Hz.