| 引用本文: | 郭天豪,侯中喜,王鹏,等.机翼变形的临近空间太阳能飞行器平稳升空方案.[J].国防科技大学学报,2019,41(1):19-26.[点击复制] |
| GUO Tianhao,HOU Zhongxi,WANG Peng,et al.Steady climbing approach of near-space solar aircraft with wing morphing[J].Journal of National University of Defense Technology,2019,41(1):19-26[点击复制] |
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| 机翼变形的临近空间太阳能飞行器平稳升空方案 |
| 郭天豪, 侯中喜, 王鹏, 高俊 |
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(国防科技大学 空天科学学院， 湖南 长沙 410073)
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| 摘要: |
| 临近空间太阳能飞行器由于苛刻的能源平衡约束，往往具有大展弦比轻质结构，使得其在低空飞行时空速过低，飞行安全性受到了显著的挑战。为了实现该类飞行器在临近空间工作点与中低空爬升过程的气动性能匹配，提出了基于主动变形的太阳能飞行器升空方案。针对性地研究了可变形飞行器的气动和推进系统建模方法，在此基础上定量分析了不同飞行器构型俯仰、滚转和偏航三个通道稳定性和操纵性。给出了从地面到高空机翼逐渐展平的升空方案，并对升空过程中各高度所需平飞推力和功率进行了校核。结果显示，该方案可以有效提升飞行器中低空稳定性和操纵性，代价是增加了功率消耗。 |
| 关键词: 临近空间太阳能飞行器 可变形飞行器 飞行稳定性 飞行器机动性 |
| DOI：10.11887/j.cn.201901004 |
| 投稿日期：2018-03-30 |
| 基金项目:国防科技大学科研计划资助项目（ZK16-03-39） |
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| Steady climbing approach of near-space solar aircraft with wing morphing |
| GUO Tianhao, HOU Zhongxi, WANG Peng, GAO Jun |
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(College of Aeronautics and Astronautics, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| To satisfy the rigorous constraint of energy balance, near-space solar aircrafts are usually designed with large aspect ratio and lightweight structures, which leads to a very slow airspeed and a bad flight safety in low altitude airspace. For matching the aerodynamic performances at near space working point and in low-altitude climbing process, a climbing approach of solar aircraft based on active morphing was proposed. The aerodynamic and propulsion modeling methods were researched. The flight safety and maneuverability of the pitch, roll and yaw attitude channels were analyzed in quantification. As a result, a climb process with the wing gradually stretching was decided, in which the level flight thrust and power costs were checked. Results show that the stability and maneuverability in low altitude flight are effectively improved, and the cost of power is increased by the wing morphing. |
| Keywords: near-space solar aircraft morphing aircraft flight stability aircraft maneuverability |
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