基于风洞试验的飞机侧风环境停放稳定性研究

摘要

根据风洞试验结果对某型号民用飞机在大侧风(风速大于35m/s)情况下停放时的稳定性进行了研究与分析,发现当飞机在正侧风(侧风水平方向与机身垂直)作用下有较大的上仰力矩产生,导致机头上翘或有上翘的趋势. 通过"部件组拆法"发现飞机垂尾的干扰使得平尾产生了一个抬头力矩,致使飞机存在倾倒的可能. 试验后,通过CFD仿真模拟计算分析了在侧风情况下机身表面的压力分布,并进行了相关的解释,作为对风洞试验的分析和补充.%This paper analyzes some aircraft parking stability in the situation of comparatively strong crosswind (wind speed is above 35m/s) based on wind tunnel test. It demonstrated that positive pitch moment is generated by perpendicular crosswind. By the method of parts-dismount, it is found that vertical tail is the main reason. Af-ter test , the distribution of the surface pressure was estimated in the situation of crosswind by CFD simulation ,and relevant explanation is conducted as a complement for this conclusion.