Invention Grant
- Patent Title: Gas turbine engine airfoil frequency design
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Application No.: US15869912Application Date: 2018-01-12
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Publication No.: US10781695B1Publication Date: 2020-09-22
- Inventor: Charles H. Warner , William R. Edwards , Matthew R. Willett , Sean Nolan , Ernest D. Casparie
- Applicant: United Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: Raytheon Technologies Corporation
- Current Assignee: Raytheon Technologies Corporation
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds, P.C.
- Main IPC: F01D5/16
- IPC: F01D5/16 ; F01D5/00 ; F01D5/34 ; F01D9/04 ; F02C3/06

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 0.55-0.65 inch (14.0-16.5 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 0.76-0.86 inch (19.3-21.8 mm). The airfoil element includes at least two of a first mode with a frequency of 3335±10% Hz, a second mode with a frequency of 5715±10% Hz and a third mode with a frequency of 41797±10% Hz.
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