Gas turbine engine airfoil frequency design

US10774651B1 · 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 Giannakopolous · Middletown, US
• Lisa I. Brilliant · Middletown, US

Key dates

• Filing date: Jan 12, 2018
• Grant date: Sep 15, 2020
• Expiry date: Jun 11, 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 2.85-3.15 inch (72.4-80.0 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 1.52-1.82 inch (38.6-46.2 mm). The airfoil element includes at least two of a first mode with a frequency of 506±10% Hz, a second mode with a frequency of 1732±10% Hz, a third mode with a frequency of 2268±10% Hz, a fourth mode with a frequency of 4007±10% Hz, a fifth mode with a frequency of 4851±10% Hz and a sixth mode with a frequency of 6416±10% Hz.