摘要
对动导数的三种获取方法进行了简要描述,主要是风洞试验和工程估算,其次是近几年悄然兴起的数值计算。针对一种常规布局的民用飞机的全机构型,对比分析了工程估算和风洞试验的结果,包括各种姿态振荡,分析了振幅大小、振荡频率和重心变化对动导数的影响,并分析了雷诺数效应对非线性气动特性的影响。通过工程估算的方法对该飞机的动导数进行了估算,采用了欧美和苏俄两种不同类型的方法,交叉验证了工程估算的精准度。
This paper describes three sources rivatives, mainly wind tunnel experiment and of approaches dealing with the determination of dynamic de- engineering estimation, especially the more and more popu- lar computational fluid dynamics methods. Focused on a conventional configuration civil transport air- craft, this paper documents the dynamic derivatives due to the wind tunnel test and engineering estima- tion, introduces the test principle for wind tunnel test of dynamic derivatives. After analysis of the Reyn- olds effect, this paper also calculates the derivatives with two different estimation methods, respectively representng the Russian and European methodologies, cross-verifies the accuracy and reliability of estima- tion methods.
出处
《飞行力学》
CSCD
北大核心
2013年第1期75-79,共5页
Flight Dynamics
关键词
动导数
工程估算
风洞试验
民用飞机
dynamic derivatives
engineering estimation
wind tunnel test
civil aircraft
