摘要
支撑翼布局飞机的机翼展弦比较大,在机翼结构质量估算中应考虑颤振约束的影响。以单通道支撑翼布局客机为研究对象,基于结构有限元模型,应用结构优化方法,对比分析了不考虑颤振约束和考虑颤振约束对支撑翼布局机翼结构质量的影响。分析结果表明,考虑颤振约束后,主机翼的蒙皮厚度明显增加,整个机翼的质量增加了12.5%,颤振约束是影响支撑翼布局机翼质量的重要因素。
One of the main characters of a truss-braced wing(TBW)configuration is that the main wing has a high aspect ratio,because of which the flutter constraint must be considered in the mass estimation of truss-braced wing.In this paper,a commercial aircraft with a single-aisle TBW configuration is used as an example for the wing mass estimation.An optimization method based on structural finite element model is used to predict the mass of the truss-braced wing.The results from the optimizations with and without the flutter constraint are compared,which shows that the flutter constraint leads to the significant increase in wing skin thickness and 12.5%increase in wing mass.It concludes that flutter constraint has a large effect on the wing mass for TBW configuration.
作者
邢宇
余雄庆
李文强
涂建秋
Xing Yu;Yu Xiongqing;Li Wenqiang;Tu Jianqiu(China Academy of Launch Vehicle Technology,Beijing,100076,China;College of Aerospace Engineering,Nanjing University ofAeronautics and Astronautics,Jiangsu Nanjing,210016,China)
出处
《机械设计与制造工程》
2021年第6期47-50,共4页
Machine Design and Manufacturing Engineering
关键词
客机
支撑翼布局
结构质量
颤振
commercial aircraft
truss-braced wing
structure mass
flutter
