空军工程大学学报2023，Vol.24Issue(6)：58-64,7.DOI:10.3969/j.issn.2097-1915.2023.06.008
基于有限元分析的飞机挡水板强度验证飞行试验方法
Research on Flight Test Method of Aircraft Water Baffle Strength Verification Based on Finite Element Analysis
李飞 1孙文 2张海涛1
作者信息
- 1. 中国航空工业集团有限公司中国飞行试验研究院,西安,710089
- 2. 中国商用飞机有限责任公司上海飞机设计研究院,上海,201210
- 折叠
摘要
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.关键词
挡水板/溅水载荷/有限元分析/强度验证/飞行试验Key words
water baffle/splash load/finite element analysis/strength verification/flight test分类
航空航天引用本文复制引用
李飞,孙文,张海涛..基于有限元分析的飞机挡水板强度验证飞行试验方法[J].空军工程大学学报,2023,24(6):58-64,7.
