基于风洞试验的飞机侧风环境停放稳定性研究

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。

Analysis of Aircraft Parking Stability in the Situation of Crosswind by Wind Tunnel Test

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. After 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.