飞艇柔性变形对气动特性的影响研究  

Influence Research of Elastic Deformation on Aerodynamic Characteristics

作　　者：刘芳[1] 李栋[1] 李振[1] 

机构地区：[1]西北工业大学航空学院,西安710072

出　　处：《科学技术与工程》2009年第13期3704-3707,3712,共5页Science Technology and Engineering

摘　　要：软式飞艇在低充气内压和来流共同作用下,其整体结构刚度较小,应视为柔性体。飞艇所产生的柔性变形和流场之间的耦合已经成为大家越来越关注的问题。利用数值方法模拟了平流层飞艇外流场和柔性变形的非动态相互耦合作用,并通过风洞实验验证了所建薄膜体变形和流场数值模拟及气动载荷耦合计算模型的适用性。利用该模型进一步确定外流场作用下艇体柔性变形对总体性能的影响,对平流层柔性飞艇的工程应用具有一定的参考价值。Under the effect of low inner pressure and ambient flow, the blimp with low rigidity can be taken as an elastic structure. The coupling computation of ambient flow and elastic deformation has become an important problem. The numerical simulation is used to analyze the coupling of the flow-field and transformation. The applicability of this method is validated by wind-tunnel experiments. This method would be a reference to the project application.

关 键 词：飞艇 柔性体 流固耦合 数值模拟 风洞实验 

分 类 号：V211.51[航空宇航科学与技术—航空宇航推进理论与工程]