华中科技大学学报：自然科学版2011，Vol.39Issue(12)：58-62,5.
基于有限状态入流的无轴承旋翼气弹稳定性
Aeroelastic stability of a bearingless rotor in hover with finite-state unsteady aerodynamics
摘要
Abstract
A analytical model was presented for aeroelastic stability of a bearingless rotor with finite-state unsteady aerodynamics in hover.Nonlinear strain-displacement relations were built using Green-Lagrange strain tensors.The blade was modeled as a multiple-load-path system and the finite element equations of a blade motion were obtained from Hamilton′s principle.Unsteady aerodynamics effects were induced through finite-state induced flow models.The modal approaching method based on coupled rotating natural modes was used for the stability analysis.Numerical results show that the predictions using finite-state induced flow models are close to experimental values and they are better than those previously using dynamic inflow models or uniform inflow models.The calculation shows that the model is correct.关键词
直升机/无轴承旋翼/非线性振动/气弹稳定性/有限状态入流/悬停Key words
helicopter/bearingless rotor/nonlinear vibration/aeroelasticity/finite-state induced flow/hover分类
航空航天引用本文复制引用
高文杰,向锦武..基于有限状态入流的无轴承旋翼气弹稳定性[J].华中科技大学学报：自然科学版,2011,39(12):58-62,5.基金项目
国家自然科学基金资助项目 （）
