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| 三角翼无人机受损升阻特性的数值模拟 | |
| 引用本文： | 朱建勇,钟超,徐让书,屈秋林.三角翼无人机受损升阻特性的数值模拟[J].沈阳航空工业学院学报,2014,31(4):6-11. |
| 作者姓名： | 朱建勇 钟超 徐让书 屈秋林 |
| 作者单位： | 1. 沈阳航空航天大学航空航天工程学部(院),沈阳110136;北京航空航天大学流体力学教育部重点实验室,北京100191 2. 沈阳航空航天大学航空航天工程学部(院),沈阳,110136 3. 北京航空航天大学流体力学教育部重点实验室,北京,100191 |
| 基金项目： | 国家自然科学基金资助项目，沈阳航空航天大学自选课题 |
| 摘 要： | 使用CFD软件求解定常可压缩流动的质量加权平均N-S方程和S-A模型,数值模拟了无损无人机和受损无人机的绕流流场,揭示了马赫数和雷诺数对无人机升阻特性的影响规律,分析了不同位置、不同尺寸损伤孔对无人机升阻特性的影响规律.计算结果表明,机身受损对全机的升阻特性影响较小;机翼受损导致气流分离,严重影响全机的升阻性能,造成全机升力减小,阻力增大;尾舵位置受损对全机升力影响较大,对全机阻力影响较小. |
| 关 键 词： | 无人机 升阻特性 数值模拟计算 受损 |
Numerical simulation on lift-drag characteristics of certain damaged delta wing UAV |
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| ZHU Jian-yong,ZHONG Chao,XU Rang-shu,QU Qiu-lin.Numerical simulation on lift-drag characteristics of certain damaged delta wing UAV[J].Journal of Shenyang Institute of Aeronautical Engineering,2014,31(4):6-11. | |
| Authors: | ZHU Jian-yong ZHONG Chao XU Rang-shu QU Qiu-lin |
| Institution: | ZHU Jian-yong ,ZHONG Chao ,XU Rang-shu, QU Qiu-lin (1. Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China; 2. Key Laboratory of Fluid Mechanics,Ministry of Education, Beihang University ,Beijing 100191, China) |
| Abstract: | Numerical results are presented by simulating the flow around certain undamaged UAV and damaged UAV based on the mass-averaged N-S equation of steady compressible flow and S-A turbulence model solved by FLUENT software. The paper reveals the effects of the Mach number and Reynolds number on the lift-drag characteristics. The effects of damaged holes of different sizes in different positions on the lift-drag characteristics of UAV are also analyzed. The results show that the damaged fuselage has little effect on the lift-drag characteristics,that the damaged wings lead to flow separation and strongly influence the lift-drag characteristics, causing the lift decrease and the drag increase, and that the damaged stern rudder has great influence on the lift, while has little influence on the drag. |
| Keywords: | UAV lift-drag characteristics numerical simulation damaged |
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