1. 西北工业大学 航空学院,西安,710072
2. 飞行器基础布局全国重点实验室,西安,710072
3. 中国航空工业集团 成都飞机设计研究所,成都,610091
杨敬亭(2001—),男,四川成都人,硕士研究生,研究方向:飞行器设计. E-mail:yangjingting@mail.nwpu.edu.cn
王科雷*,副研究员,研究方向:飞行器设计. E-mail:craig-wang@nwpu.edu.cn
纸质出版:2025
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杨敬亭, 王科雷, 周洲, 等. 推进-气动耦合的分布式动力翼增升特性[J]. 空气动力学学报, 2025, 43(11): 97−109.
YANG Jingting, WANG Kelei, ZHOU Zhou, et al. Lift enhancement characteristics of distributed propulsion wing with propulsion-aerodynamic coupling[J]. 2025, 43(11): 97-109.
杨敬亭, 王科雷, 周洲, 等. 推进-气动耦合的分布式动力翼增升特性[J]. 空气动力学学报, 2025, 43(11): 97−109. DOI: 10.7638/kqdlxxb-2025.0065
YANG Jingting, WANG Kelei, ZHOU Zhou, et al. Lift enhancement characteristics of distributed propulsion wing with propulsion-aerodynamic coupling[J]. 2025, 43(11): 97-109. DOI: 10.7638/kqdlxxb-2025.0065.
为提升短距起降无人机的高升力需求与巡航效率,本文提出了一种融合分布式推进与动力增升技术的分布式动力翼增升布局。基于某分布式电推进短距起降无人机技术背景,通过短距起降、巡航多工况数值模拟,分析了该布局的气动-推进耦合特性及流场结构演化,揭示了动力单元数量对升阻特性的影响规律。研究结果表明:在短距起降状态下,可以利用气动-推进耦合作用产生最优的增升减阻效果,在获得高升力系数2.68的同时,升阻比可达14.11,且随着动力单元数量由6增长至18,总升力水平可提升60%以上,而总阻力水平在12动力单元下达到最低,此时构型为增升减阻效果最优的动力分布配置;在巡航状态下,通过增大动力单元数量可有效改善整体升阻特性,当增大至18后,升阻比达到最大。本文研究可为新一代高性能、高机动短距起降飞行器设计提供理论支撑。
To reconcile the high-lift demands of short takeoff and landing (STOL) with the requirement for efficient cruise in unmanned aerial vehicles (UAVs)
this paper presents a novel distributed propulsion wing lift enhancement configuration (DPWLEC) that capitalizes on aerodynamic-propulsive coupling. Based on the technical background of a specific distributed electric propulsion (DEP) STOL UAV
numerical simulations for multiple flight conditions
including STOL and cruise
are conducted. The study analyzes the aerodynamic-propulsion coupling characteristics and the evolution of the flow field structure for this configuration
revealing the influence of the propulsor number on the lift and drag characteristics. The research results indicate that during the STOL phase
the aerodynamic-propulsion coupling effect can be utilized to achieve optimal lift enhancement and drag reduction. A high lift coefficient of 2.68 is obtained simultaneously with a lift-to-drag ratio of 14.11. As the propulsor number increases from 6 to 18
the total lift increases by more than 60%. The total drag reaches its minimum value with a configuration of 12 propulsors
which represents the optimal DEP distribution for achieving the best combined lift-enhancement and drag-reduction effect. On the other hand
during the cruise phase
increasing the propulsor number effectively improves the overall lift-to-drag characteristics. After the propulsor number is increased to 18
the lift-to-drag ratio reaches up to a maximum value. These findings can provide theoretical support for the design of a new-generation of high-efficiency
high-maneuverability STOL aircraft.
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