Invention Grant
- Patent Title: Gas turbine engine airfoil frequency design
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Application No.: US15868499Application Date: 2018-01-11
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Publication No.: US11236616B1Publication Date: 2022-02-01
- Inventor: Kurt R. Heinemann , Sumin Tao , Christopher B. Jelks , Xuedong Zhou , Mark David Ring , Konstantinos Panagiotis Giannakopoulos , Kate Hudon , John Joseph Papalia
- Applicant: UNITED TECHNOLOGIES CORPORATION
- Applicant Address: US CT Farmington
- Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds, P.C.
- Main IPC: F01D5/16
- IPC: F01D5/16 ; F02C3/06 ; F04D29/32 ; F04D29/38 ; F04D29/66 ; F02K3/06

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.
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