Research on Flight Test Method of Aircraft Water Baffle Strength Verification Based on Finite Element Analysis
LI Fei
SUN Wen
ZHANG Haitao
Abstract：In order to prevent excessive splashing from entering into the engine inlet,in the ARJ 21-700 aircraft,there is placed additionally between the wheels of main landing gear a water baffle,effectively im-proving the operation capacity of complex weather such as rain and snow.Difficulties being in existence in the flight test of water baffle strength verification-the selection of refitting position of the strain sensor and the design of test points,firstly,a splash load model is established by analyzing the splash mechanism of the aircraft wheel.Secondly,with the help of finite element analysis,the stress distribution of water baffle is determined and the strength check work is completed.According to the results of finite element analy-sis,the selection of refitting position of the strain sensor and the design of test points are completed.Final-ly,the work of water baffle strength verification is completed through flight test.The results show that the installation of water baffles can effectively change the splash pattern.The results of finite element a-nalysis and flight test are in good agreement,which can provide useful reference for other similar complex irregular structures.The safety margin of water baffle is sufficient,and there is a large space for weight re-duction,which requires further optimization of the design.
Keywords：water bafflesplash loadfinite element analysisstrength verificationflight test
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 58-64 )