公开(公告)号：US10815787B1

公开(公告)日：2020-10-27

申请号：US15869206

申请日：2018-01-12

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： David Mikol ,  Kimberly Pash Boyington ,  Brian J. Schuler ,  Zhen Wu ,  Joseph Wieser ,  Xuedong Zhou ,  Sue-Li Chuang ,  John Joseph Papalia ,  Han J. Yu

IPC: F04D29/32 ,  F02K3/06 ,  F02C3/06 ,  F01D5/16 ,  F04D29/38 ,  F04D29/66

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 0.46-0.59 inch (11.8-14.9 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 0.73-0.86 inch (18.6-21.9 mm). The airfoil element includes at least two of a first mode with a frequency of 5133±15% Hz, a second mode with a frequency of 8542±15% Hz, a third mode with a frequency of 15487±15% Hz, a fourth mode with a frequency of 18774±15% Hz, a fifth mode with a frequency of 24295±15% Hz and a sixth mode with a frequency of 27084±15% Hz.