摘要
研究了改善装机条件下的太阳能无人机的性能。首先,采用单独螺旋桨的缩比模型,通过风洞试验验证了本文所选数值模拟方法的准确性;其次,采用定常和非定常的数值模拟方法,计算了螺旋桨安装位置和单独螺旋桨、带机翼螺旋桨两种构型对螺旋桨性能的影响,以及改善装机条件下螺旋桨对无人机性能的影响。研究结果表明:带机翼螺旋桨相比于单独螺旋桨的推力、功率等均增加;螺旋桨滑流对短舱影响很小,主要是滑流加速导致短舱阻力少许增加。螺旋桨滑流导致无人机机翼升力曲线斜率降低、阻力增加,俯仰稳定性增加。随着螺旋桨距离无人机机翼前缘的距离的增大,带机翼螺旋桨的性能逐渐趋近于单独螺旋桨的性能。
The performance of the solar UAV propeller under the improved installed condition is studied.Firstly,wind tunnel test is carried out to verify the accuracy of the numerical simulation method choosed in this paper in the case of the installation of a separate propeller.Secondly,the effects of the propeller installation position,the individual propeller and the winged propeller on the performance of the propeller were calculated by using the constant and unsteady numerical simulation methods,and the influence of the improved propeller on the performance of the UAV was calculated.The results show that the winged propeller causes the propeller thrust and power to increase,and the propeller slipstream has little effect on the nacelle,mainly due to the acceleration of the slipstream leading to a slight increase in drag.Propeller slipstream results in lower UAV wing lift curve slope,higher drag and higher pitch stability.As the distance between the propeller and the leading edge of the wing increases,the performance of the winged propeller gradually approaches that of the propeller without the wing.
作者
李文科
涂良辉
赵昌霞
刘传超
苏文涛
卢俊
刘吉禹
LI Wenke;TU Lianghui;ZHAO Changxia;LIU Chuanchao;SU Wentao;LU Jun;LIU Jiyu(School of Aeronautics and Astronautics,Nanchang Hangkong University,Nanchang 330063,China;Anhui Xihe Aviation Techonlogy Company Limited,Hefei 230088,China)
出处
《中山大学学报(自然科学版)(中英文)》
北大核心
2025年第3期148-155,共8页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
江西省重点研发计划(20243BBG71006)。
关键词
太阳能无人机
气动性能
单独螺旋桨
带机翼螺旋桨
螺旋桨滑流
数值模拟
solar UAV
aerodynamic performance
the individual propeller
the winged propeller
propeller slipstream
numerical simulation
