直升机舰面动力学分析模型

Analytical Model of Helicopter On-Deck Dynamic Interface

摘要:

建立了舰船甲板上直升机旋翼/机体耦合动力学分析模型,导出了其运动方程。无铰旋翼采用当量铰、刚硬桨叶模型,采用准定常理论计算桨叶气动力并计入旋翼动力入流的影响；假设机体是刚性体并在弹性起落架上作六自由度运动。舰船具有6个运动自由度,并考虑直升机在甲板上的不同位置及舰面流场等因素。

Abstract:

An analytical model of rotor/fuselage coupled dynamics of helicopter shipboard on-deck was presented, and its dynamic equations were derived. The hingeless rotor was simplified as equivalent hinged rigid blade model. Aerodynamic loads were modeled using a quasi-steady blade element theory, and the effect of dynamic inflow on the rotor was considered. The airframe was assumed to be rigid, and its six-degree-of-freedom (6-DoF) model on elastic landing gears was established. Also, 6-DoF model of ship motion was taken into account. Some considerations, such as different locations of helicopter on the ship deck, the effect of airwake to the rotor blade were introduced into the model.