轮胎和缓冲支柱压力对摆振特性的影响

Effect of Tyre and Buffer Strut on Shimmy Characteristics

阐述了摆振分析的基本思路,分析了轮胎和缓冲支柱压力对摆振特性的影响,并结合某起落架计算比较了不同轮胎及缓冲支柱压力下的摆振特性。研究表明:当两者压力降低时,摆振临界阻尼均减小,有利于防摆;反之,摆振临界阻尼均增大,不利于防摆;但在两者压力变化的百分比相同的情况下,轮胎压力变化比缓冲支柱压力变化对摆振特性的影响更明显。

The paper describes the basic thought of shimmy analysis, analyzes the effect of tyre and buffer strut on shimmy characteristics and compares the shimmy characteristics under different tyre and buffer strut pressure in combination of a kind of landing gear. The study shows that when both pressure drops, the critical shimmy damping decreases, which is good to shimmy damping; on the contrary, the critical shimmy damping increases, which is bad to shimmy damping; however, in the case that the variation percentage of the pressure is the same, the pressure variation of the tyre has an more obvious effect on the shimmy characteristics than that of buffer strut does.