期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
直升机操纵系统操作试验研究 被引量:6
1
作者 胡德榕 王予生 《直升机技术》 2005年第2期29-32,共4页
本文提出的操纵系统操作试验是以直升机在恶劣飞行条件下、且在操纵系统助力器失效时,判断直升机操纵系统本身有无过度变形、过度摩擦和卡阻现象发生以确保直升机在恶劣气象条件下的安全飞行。此试验是在某型直升机上严格按适航条例规定... 本文提出的操纵系统操作试验是以直升机在恶劣飞行条件下、且在操纵系统助力器失效时,判断直升机操纵系统本身有无过度变形、过度摩擦和卡阻现象发生以确保直升机在恶劣气象条件下的安全飞行。此试验是在某型直升机上严格按适航条例规定,在动平衡加载状态下全行程范围内往返运动进行测试研究的。 展开更多
关键词 直升机 操纵系统 操作加载 过度变形 过度摩擦 卡阻
下载PDF
Assessment model for tribological property of ceramic/stainless steel rubbing pairs in H_2O_2 solution
2
作者 DONG CongLin YUAN ChengQing +1 位作者 LI Jian YAN XinPing 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第12期3017-3023,共7页
The tribological properties of ZrO2 ceramic and 1Cr18Ni9Ti stainless steel rubbing pairs were investigated using a special tribo-tester under different concentrations of hydrogen peroxide (H2O2) solution.The compariso... The tribological properties of ZrO2 ceramic and 1Cr18Ni9Ti stainless steel rubbing pairs were investigated using a special tribo-tester under different concentrations of hydrogen peroxide (H2O2) solution.The comparison analyses of the friction coefficients,worn volume rates,worn particles and surface roughness were conducted under the tested conditions.There were significant differences of the tribological properties of the rubbing pairs in the different concentrations H2O2 solution because of oxidation and corrosion.This research has revealed that the main wear mechanisms between the rubbing pairs are severe adhesive wear,abrasive wear and corrosive wear in the H2O2 solution with different concentrations.A model has been established to assess the most suitable concentration of the H2O2 solution for the tribological properties of the rubbing pairs.The result shows that 50% concentration of the H2O2 solution is the most suitable.The assessment result is consistent with the experimental result.It is believed that the knowledge gained in this study is useful for the optimization of the friction pairs in the extreme condition. 展开更多
关键词 ZrO2 ceramic 1Cr18Ni9Ti stainless steel hydrogen peroxide
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部