报告题目：

Development of an aeroelastic method for predicting rotor airloads and structural loads

报告人 Dr. Jichao Su

Institute of Aerospace Research in Ottawa, Canada

报告时间：2010年10月14号上午10：00—11:30

报告地点：力学所1号楼312会议室

邀请人：LHD杨国伟研究员

报告摘要

The Computational fluid dynamics solver, Cobalt, is used with a blade element model imbedded for the aerodynamic inflow prediction of a helicopter rotor. The elastic structural dynamics of the rotor is studied using a multibody dynamics analysis tool, DYMORE, which uses a finite element based multibody dynamics approach for the analysis of nonlinear elastic multibody systems. In this study, the developed integrated aeroelastic method is applied to the H-34 helicopter rotor which has been flight tested and widely used for rotor model validations. A low speed case with advance ratio μ=0.129 and rotor thrust coefficient CT/σ=0.075 (σ is solidity of the rotor), and a high speed case with advance ratio μ=0.30 and rotor thrust coefficient CT/σ=0.06, are calculated and discussed. The comparison of the computed aerodynamic and structural dynamic results with flight test data showed that the current CFD inflow method gives reasonable predictions for the aerodynamic performance and dynamic response of the rotor and has the potential to be used for more complex practical situations such as a helicopter hovering in the airwake of a ship.