共轴（单轴）双桨叶直升机“地面共振”的数值分析

A NUMERICAL ANALYSIS FOR THE GROUND RESONANCE OF A TWO-BLADE HELICOPTER ROTOR ON ANISOTROPIC FLEXIBLE SUPPORTS

对共轴双桨叶双旋翼系统及单轴双桨叶直升机在各向异性支座上的“地面共振”问题进行了数值分析。

A numerical analysis is conducted to study the ground resonance of two-blade helicopter rotor on anisotropic flexible supports, in which both co-axis and uniaxis helicopters with two blades are considered. It is shown that the present method is effective and convenient with consideration of the linear stability model, especially when a symbolic reduction technique is utilized to derive analytically the corresponding governing equations, The computation reveals many interesting results, some of which are scarcely reported in previous studies and herein are discussed in detail.