摘要
针对民用飞机增升装置对机翼气动力特性的影响,在南京航空航天大学NH-2低速风洞开展了某型号客机等弦长后掠半模(Swept constant chord half-model,SCCH)增升装置测力风洞试验研究。试验来流马赫数为0.2,基于机翼弦长的试验雷诺数为1.85×106。通过试验结果,重点分析了前缘缝翼的偏角、缝道宽度及缝道搭接量对机翼增升装置增升效率的影响,得到了起飞构型和着陆构型缝翼偏角及缝道的最佳组合参数。试验研究发现,缝翼偏角从18°增加到24°时,失速迎角和最大升力系数都增大,缝翼偏角从25°增加到31°时,失速迎角增大,最大升力系数没有明显的变化。起飞构型前缘缝翼最佳缝道宽度为1.5%~2.0%,最佳缝道搭接量为1.0%左右;着陆构型缝翼最佳缝道宽度为2.0%~2.5%,最佳缝道搭接量为-1.0%~0%。最佳缝道宽度随缝翼偏角的增加呈现增大趋势。
Focusing the influence of high-lift configuration of an airplane on wing aerodynamic characteristics, an experiment is conducted in NH-2 low-speed wind tunnel over a swept constant chord half-model （SCCH） high-lift configuration of a civil aircraft. In this experiment, the Mach number is 0.2 and the Reynolds number is 1.85 × 10^6. The effect of salt deployment angle, gap and over-lap on efficiency of high-lift configuration is investigated. Based on the test results, best slat parameters of this model are obtained for both take off and landing configurations. The results show that both the stall angle of at tack and the maximum lift coefficient increase with the slat deployment angle increasing from 18° to 24°, and only the stall angle of attack increases while the maximum lift coefficient does not change obviously when the angle increasing from 25° to 31°. The best slat gap width is from 1.5 % to 2.0 % for take-off configuration, while 2.0° to 2.5% for landing configuration. The best over-lap is around 1.0% for take off configuration, while -1.0% to 0% for landing configuration. The best slat gap width presents increasing trend with the increase of the slat deployment angle.
作者
巴玉龙
张召明
BA Yulong ZHANG Zhaoming(Shanghai Aircraft Design and Research Institute, Commercial Aircraft Corporation of China Ltd, Shanghai, 201210, China College of Aerospace Engineering, Nanjing University of Aeronautics ＆ Astronautics, Nanjing, 210016, China)
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2017年第1期90-95,共6页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
民用飞机
增升装置
前缘缝翼
风洞试验
升力系数
airplane
high-lift configuration
slat
wind tunnel test
lift coefficient
