公开(公告)号：US20230349297A1

公开(公告)日：2023-11-02

申请号：US17661454

申请日：2022-04-29

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Krishna Prasad BALIKE ,  Edwin WONG ,  Daniel FUDGE ,  Ignatius THERATIL ,  Paul STONE ,  Charles MASON ,  Karan ANAND ,  Pascal DORAN

IPC: F01D5/16 ,  F01D5/14

CPC classification number: F01D5/16 ,  F01D5/141 ,  F05D2260/961 ,  F05D2240/305 ,  F05D2240/303 ,  F05D2240/304

Abstract: A method includes: obtaining a rotor having a hub and a plurality of blades protruding from the hub, the plurality of blades including first blades and second blades disposed in alternation around a central axis of the rotor, natural vibration frequencies of the first blades different from natural vibration frequencies of the second blades; determining that a difference between a first natural vibration frequency of a first blade of the first blades and a second natural vibration frequency of a second blade of the second blades is below a threshold; and modifying a shape of the first blade until the difference between the first natural vibration frequency and the second natural vibration frequency is at or above the threshold.