摘要
【目的】研究无人机旋翼桨叶在不同海拔高度下的气动特性,提高无人机旋翼桨叶的设计效率。【方法】采用计算流体力学(CFD)方法,首先对无人机旋翼桨叶在海平面高度(0 km)的气动性能进行仿真计算,并与海平面高度处实测结果对比,验证CFD仿真计算的有效性。在此基础上,进一步仿真计算了1~5 km海拔高度下旋翼桨叶的气动性能。【结果】不同海拔高度下,无人机旋翼桨叶拉力系数均值约为0.018,扭矩和需用功率系数均值约为2.05×10^(-3)。每相邻1 km海拔高度的桨叶拉力值差约为9.9%,功率值差约为9.62%。在相同转速下,桨叶功率载荷不随海拔高度发生变化。【结论】通过对无人机旋翼桨叶气动特性研究,可快速计算出桨叶在不同海拔和不同状态下的拉力、扭矩、需用功率和功率载荷,提高了旋翼桨叶的设计效率。
[Purposes]This paper aims to enhance the design efficiency of unmanned aerial vehicle(UAV)rotor blades by studying their aerodynamic characteristics at different altitudes.[Methods]Using computational fluid dynamics(CFD),the aerodynamic performance of UAV rotor blades was first simu⁃lated at sea level(0 km),with the results compared against actual sea-level measurements to validate the CFD approach.Building on this validation,simulations were further conducted for altitudes ranging from 1 to 5 km.[Findings]The study revealed that across different altitudes,the average lift coefficient of the rotor blades was approximately 0.018,while the average torque and required power coefficients were about 2.05×10^(-3).The difference in lift between adjacent 1 km altitude intervals was approximately 9.9%,with a corresponding 9.62%difference in power.Additionally,at the same rotational speed,the blade power loading remained constant regardless of altitude.[Conclusions]This research enables rapid calcu⁃lation of blade lift,torque,required power,and power loading under various altitudes and operational states,thereby improving the overall design efficiency of the rotor blades.
作者
邹茂真
ZOU Maozhen(Shenzhen Keweitai Enterprise Development Co.,Ltd.,Shenzhen 518000,China)
出处
《河南科技》
2025年第15期27-31,共5页
Henan Science and Technology
关键词
CFD
气动特性
拉力
扭矩
需用功率
功率载荷
CFD
aerodynamic characteristics
lift
torque
required power
power loading
