Raytheon Technologies Corporation

Ernest D Casparie

William R Edwards

Charles H Warner

Sean Nolan

Mark David Ring

Matthew R Willett

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&#xb1;10% Hz, a second mode with a frequency of 5715&#xb1;10% Hz and a third mode with a frequency of 41797&#xb1;10% Hz.

Gas turbine engine airfoil frequency design

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 1.13-1.23 inch (28.7-31.2 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 0.64-0.74 inch (16.3-18.8 mm). The airfoil element includes at least two of a first mode with a frequency of 1634&#xb1;10% Hz, a second mode with a frequency of 5611&#xb1;10% Hz, a third mode with a frequency of 19027&#xb1;10% Hz, a fourth mode with a frequency of 29268&#xb1;10% Hz, a fifth mode with a frequency of 33103&#xb1;10% Hz, a sixth mode with a frequency of 34908&#xb1;10% Hz and a seventh mode with a frequency of 41277&#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 0.63-0.73 inch (16.0-18.5 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 0.61-0.71 inch (15.5-18.0 mm). The airfoil element includes at least two of a first mode with a frequency of 4852&#xb1;10% Hz, a second mode with a frequency of 11917&#xb1;10% Hz, a third mode with a frequency of 30842&#xb1;10% Hz and a fourth mode with a frequency of 35225&#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 0.75-0.85 inch (19.1-21.6 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 0.56-0.66 inch (14.2-16.8 mm). The airfoil element includes at least two of a first mode with a frequency of 2740&#xb1;10% Hz, a second mode with a frequency of 5956&#xb1;10% Hz, a third mode with a frequency of 6554&#xb1;10% Hz and a fourth mode with a frequency of 31959&#xb1;10% Hz.

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Durham, CT, United States of America

Ernest D Casparie