The shock absorber performance of landing gears is been influenced by ambient temperatures while tak-ing-off or landing in different airfields.It builds the dynamic model of tricycle-type landing-gear with tem-perature effect for some aircraft and simulates the landing characteristics in the required cases.The results of simulation tally well with the full scale drop test results both in time domain peaks and period variation.Compari-son of landing loads and displacements at different temperatures shows that environment temperature will affect characteristics of main buffer,pitch damper and tire,while gas spring force gains 8%per 20℃temperature in-crease whereas oil damper force decreases.It means that the temperature influence to the gas spring force and oil damper force will counteract,which stabilizes the overall landing performance of tricycle-type landing-gear at different environment temperatures.
关键词
车架式起落架/动态着陆/仿真/环境温度/落振试验
Key words
tricycle-type landing-gear/landing impact/simulation/ambient temperature/drop test
维普
万方数据