Optimization of Locating Program of Sliding Rail of Leading-Edge Slat
Leading-edge slat is a crucial part of airplane,whose quality after assembling will have a significant impact on air-planes'delivery and interchangeability of slat.The deviation at the connection points between slide rail and slat contributes great-ly to the overall control target deviation.The primary locating surface choose between wing span plane and sliding rail radial plane based on structure features and assembly program of sliding rail part of leading-edge slat,and in cases of these locating methods,the locating accuracy of sliding rail is compared,and found that the mean position of sliding rail nodes is shifting.Through single-factor analysis,the reason of mean shift is found out.A program by using eccentric bushings to improve sliding rail location accuracy is proposed and by tolerance analysis,the validity of this program is proved.At last,we found out the rea-son why sliding rail nodes mean position shifts is asymmetry tolerance is used when designing leading-edge slat's structure.When the primary locating surface is sliding rail radial plane,the optional assembly program using eccentric bushings is proved can alleviate mean shift condition and improve sliding rails locating accuracy.
万方数据
维普
