| 引用本文: | 杨跃能,郑伟,闫野,等.平流层飞艇飞行模态分析.[J].国防科技大学学报,2015,37(4):57-64.[点击复制] |
| YANG Yueneng,ZHENG Wei,YAN Ye,et al.Flight mode analysis for stratospheric airships[J].Journal of National University of Defense Technology,2015,37(4):57-64[点击复制] |
|
| |
|
|
| 本文已被：浏览 8812次 下载 6499次 |
| 平流层飞艇飞行模态分析 |
| 杨跃能, 郑伟, 闫野, 邵汉斌 |
|
(国防科技大学 航天科学与工程学院， 湖南 长沙 410073)
|
| 摘要: |
| 平流层飞艇的总体布局、升空原理和工作模式明显不同于导弹、飞机等传统飞行器，其动力学特性亦不同于上述飞行器，须深入研究其飞行动力学的基本特性、一般规律和内在机理。针对此问题，系统研究了平流层飞艇的飞行模态。采用小扰动方法推导了平流层飞艇的线性运动方程，将其解耦分组为纵向运动方程和横侧向运动方程；定义模态及模态参数，研究平流层飞艇的模态分析方法；通过计算分析状态方程的特征值和特征向量，研究了平流层飞艇的飞行模态。结果表明：纵向运动由浮沉、浪涌和摆动三种模态叠加而成，横侧向运动由偏航衰减、侧滑衰减和滚转振荡三种模态叠加而成。 |
| 关键词: 飞行力学 平流层飞艇 运动方程 运动模态 特征向量 |
| DOI：10.11887/j.cn.201504010 |
| 投稿日期：2014-12-24 |
| 基金项目:国家自然科学基金资助项目（11502288） |
|
| Flight mode analysis for stratospheric airships |
| YANG Yueneng, ZHENG Wei, YAN Ye, SHAO Hanbin |
|
(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
|
| Abstract: |
| The aerodynamic shape, overall design and operation principle of stratospheric airships are different from the conventional aircrafts such as airplane and missile, and the flight mechanism. The dynamics characteristics of the stratospheric airship are different from the conventional aircrafts. Therefore, the inherent mechanism and characteristics of the stratospheric airship need to be further investigated. The linearization equations of motion for stratospheric airship were derived by using the “small disturbance” theory, which could be divided into longitudinal motion and lateral-directional motion. The fight modes and mode parameters were defined, and an analytical method was proposed to analyze the flight dynamics. Flight modes of the stratospheric airship were investigated based on eigenvalue and eigenvector of the state equations. Results show that the longitudinal motion includes three modes: heave mode, surge mode and pendulum mode, whereas the lateral motion includes another three modes: yaw mode, sideslip mode and roll oscillation mode. |
| Keywords: flight dynamics stratospheric airship motion equations flight mode eigenvector |
|
|
|
|
|
