Vibration source identification of aircraft wing based on the levels of human body vibration comfort at different locations

Abstract

In order to locate vibration source caused by the wing fault through the human body feeling in the passenger cabin of the airplane, human comfort is selected as the evaluation index. Based on the method of evaluating human comfort according to ISO 2631-1-1997 standard, the response data of seats in the cabin of an aircraft under different vibration sources are analyzed. The human comfort of different seats under the excitation of horizontal tail, vertical tail, flap and aileron is obtained. The comfort level is divided into several grades according to the standard. The results show that for the excitation at the horizontal tail and vertical tail, the level distributions of human comfort at different seats is unique, so it can be used to judge the abnormal excitation at these two places. When the flaps and ailerons are excited, there is no such unique distribution in the comfort index of each position. The results of this paper can be used for on-line rapid identification of aircraft wing vibration sources.