Raytheon Technologies Corporation

Sumin Tao

Mark David Ring

Kurt R Heinemann

Xuedong Zhou

Christopher B Jelks

Kate Hudon

Konstantinos Panagiotis Giannakopoulos

John Joseph Papalia

Lisa I Brilliant

Konstantinos Panagiotis Giannakopolous

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&#xb1;10% Hz, a second mode with a frequency of 1035&#xb1;10% Hz, a third mode with a frequency of 1488&#xb1;10% Hz, a fourth mode with a frequency of 1524&#xb1;10% Hz, a fifth mode with a frequency of 2855&#xb1;10% Hz and a sixth mode with a frequency of 4462&#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 3.68-3.98 inch (93.5-101.1 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 1.75-2.05 inch (44.5-52.1 mm). The airfoil element includes at least two of a first mode with a frequency of 436&#xb1;10% Hz, a second mode with a frequency of 1557&#xb1;10% Hz, a third mode with a frequency of 1424&#xb1;10% Hz, a fourth mode with a frequency of 1870&#xb1;10% Hz, a fifth mode with a frequency of 3321&#xb1;10% Hz and a sixth mode with a frequency of 3957&#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 2.99-3.29 inch (75.9-83.6 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 1.44-1.74 inch (36.6-44.2 mm). The airfoil element includes at least two of a first mode with a frequency of 430&#xb1;10% Hz, a second mode with a frequency of 1459&#xb1;10% Hz, a third mode with a frequency of 2036&#xb1;10% Hz, a fourth mode with a frequency of 3615&#xb1;10% Hz, a fifth mode with a frequency of 4722&#xb1;10% Hz and a sixth mode with a frequency of 5591&#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 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&#xb1;10% Hz, a second mode with a frequency of 1732&#xb1;10% Hz, a third mode with a frequency of 2268&#xb1;10% Hz, a fourth mode with a frequency of 4007&#xb1;10% Hz, a fifth mode with a frequency of 4851&#xb1;10% Hz and a sixth mode with a frequency of 6416&#xb1;10% Hz.

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Mukilteo, WA, United States of America

Sumin Tao