Raytheon Technologies Corporation

Rtx Corporation

Haiyun Li

Sean Nolan

Eliannah Hunderfund

Joseph Steele

Marian A Iskandar

A turbomachine airfoil element includes an airfoil having 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 0.83-0.93 inch (21.1-23.6 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 0.80-0.90 inch (20.4-22.9 mm). The airfoil element includes at least two of a first mode with a frequency is 3135&#xb1;10% Hz, a second mode with a frequency is 6634&#xb1;10% Hz, a third mode with a frequency is 13260&#xb1;10% Hz, a fourth mode with a frequency is 16838&#xb1;10% Hz and a fifth mode with a frequency is 17980&#xb1;10% Hz.

Gas turbine engine airfoil frequency design

A turbomachine airfoil element includes an airfoil having 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 0.60-0.70 inch (15.3-17.8 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 0.90-1.00 inch (22.9-25.5 mm). The airfoil element includes at least two of a first mode with a frequency of 5327&#xb1;10% Hz, a second mode with a frequency of 8393&#xb1;10% Hz, a third mode with a frequency of 16289&#xb1;10% Hz, a fourth mode with a frequency of 25049&#xb1;10% Hz and a fifth mode with a frequency of 27423&#xb1;10% Hz.

A turbomachine airfoil element includes an airfoil having 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 0.70-0.85 inch (17.8-20.3 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 0.85-0.95 inch (21.5-24.0 mm). The airfoil element includes at least two of a first mode with a frequency of 4508&#xb1;10% Hz, a second mode with a frequency of 7466&#xb1;10% Hz, a third mode with a frequency of 16104&#xb1;10% Hz, a fourth mode with a frequency of 18397&#xb1;10% Hz and a fifth mode with a frequency of 20855&#xb1;10% Hz.

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 1.03-1.13 inch (26.2-28.7 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 0.93-1.03 inch (23.6-26.2 mm). The airfoil element includes at least two of a first mode with a frequency of 2182&#xb1;10% Hz, a second mode with a frequency of 4966&#xb1;10% Hz, a third mode with a frequency of 9675&#xb1;10% Hz, a fourth mode with a frequency of 13154&#xb1;10% Hz and a fifth mode with a frequency of 14056&#xb1;10% Hz.

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West Hartford, CT, United States of America

Haiyun Li