United Technologies Corporation

Raytheon Technologies Corporation

Raytheon Technology Corporation

Jeff M Carrico

Charles H Warner

Carl S Richardson

Xuedong Zhou

Christopher St Mary

Charles P Gendrich

Kaliya Balamurugan

John Joseph Papalia

Joseph Wieser

Robert W Fessenden

Zhen Wu

Joseph Steele

Danoris Garcia-Chabrier

An airfoil 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 0.70-0.83 inch (17.8-21.1 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 0.34-0.45 inch (8.5-11.5 mm). The airfoil element includes at least three of a first mode with a frequency of 3748&#xb1;15% Hz, a second mode with a frequency of 6416&#xb1;15% Hz, a third mode with a frequency of 14418&#xb1;15% Hz, a fourth mode with a frequency of 17417&#xb1;15% Hz, a fifth mode with a frequency of 19326&#xb1;15% Hz and a sixth mode with a frequency of 26648&#xb1;15% 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 0.78-0.91 inch (19.7-23.1 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 0.49-0.62 inch (12.5-15.6 mm). The airfoil element includes at least two of a first mode with a frequency of 3533&#xb1;15% Hz, a second mode with a frequency of 8291&#xb1;15% Hz, a third mode with a frequency of 17362&#xb1;15% Hz and a fourth mode with a frequency of 23365&#xb1;15% Hz.

A turbomachine includes an endwall with a plurality of circumferentially spaced apart, radially extending blades extending from the endwall. A first one of the blades defines a pressure surface of a flow channel, a second one of the blades defines a suction surface of the flow channel, and the endwall defines an inner surface of the flow channel. The endwall includes a radially raised portion that is raised proximate the suction surface, and a radially depressed portion downstream of the raised portion.

Fan root endwall contouring

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Glastonbury, CT, United States of America

Jeff M Carrico