Dihedral influence on lateral–directional dynamic stability on large aspect ratio tailless flying wing aircraft
Dihedral influence on lateral–directional dynamic stability on large aspect ratio tailless flying wing aircraft
复制标题
二面角对大展弦比无尾飞翼飞机横向动态稳定性的影响
DOI：
10.1016/j.cja.2014.08.003
复制
发表时间：
2014
影响因子：
5.7
通讯作者：
Jun Huang
中科院分区：
文献类型：
--
作者：
Lei Song;Hua Yang;Yanguang Zhang;Haoyu Zhang;Jun Huang
本文讨论了二面体布局对无尾飞翼飞机横向动力稳定性的影响。以大展弦比无尾飞翼飞机为研究对象，将展向截面上的二面角划分为三段。研究了二面体布局的影响。基于涡格法计算的稳定性导数，利用线性化的横向模式小扰动方程确定了系统的动力特性。通过比较具有不同二面角布局的7056种构型，创建了两组稳定性优化的二面体布局概念。在这些优化的概念中，飞行质量接近2级要求，而没有任何电子稳定增强系统。
The influence of dihedral layout on lateral–directional dynamic stability of the tailless flying wing aircraft is discussed in this paper. A tailless flying wing aircraft with a large aspect ratio is selected as the object of study, and the dihedral angle along the spanwise sections is divided into three segments. The influence of dihedral layouts is studied. Based on the stability derivatives calculated by the vortex lattice method code, the linearized small-disturbance equations of the lateral modes are used to determine the mode dynamic characteristics. By comparing 7056 configurations with different dihedral angle layouts, two groups of stability optimized dihedral layout concepts are created. Flight quality close to Level 2 requirements is achieved in these optimized concepts without any electric stability augmentation system.