航空工程进展2024，Vol.15Issue(4)：82-92,11.DOI:10.16615/j.cnki.1674-8190.2024.04.10
小车式起落架地面载荷与漂浮性分析
Ground load and float-ability analysis of trolley type landing gear
摘要
Abstract
The compatibility of aircraft landing gear and pavement is of great significance to the ground motion abili-ty of aircraft.In this paper,the landing gear load and tire load distribution under different working conditions for a large aircraft are calculated by using the Portland Cement Association method based on Westgard laminate theory and the United States Army Corps of Engineers method based on California bearing ratio(CBR).The influence of the landing conditions,ground mobility,tire number,tire deflation and track widths on the aircraft classification number(ACN)is analyzed.The aircraft float-ability under rigid and flexible pavement is analyzed.Results show that the increased tire load and uneven load distribution caused by vertical overload and tire deflation can weaken the float-ability of aircraft to varying degrees,especially during turning and landing conditions with tail sinking,there-fore,which need to be limited.Increasing the number of tires and the distance between them can improve the float-ability,but the structural design,strength margin and other factors should also be taken into consideration to opti-mize the design of trolley type landing gear.关键词
地面载荷/漂浮性/起落架/道面/加利福尼亚承载比/飞机等级数Key words
ground load/float-ability/landing gear/pavement/California bearing ratio(CBR)/aircraft classifica-tion number(ACN)分类
航空航天引用本文复制引用
杨钰,张明,阮爽,史夏正..小车式起落架地面载荷与漂浮性分析[J].航空工程进展,2024,15(4):82-92,11.基金项目
航空科学基金(2022Z029052001) （2022Z029052001）
中央高校基本科研业务费专项资金资助项目(56XBC22026) （56XBC22026）
