山东航空学院学报

研究了太阳能无人机巡航中飞行速度、飞行高度与俯仰角对太阳能无人机剩余功率输出的影响，并分析了三者与剩余功率的相关性；同时，对仿真结果与飞行实验的结果进行了对比验证。结果表明：剩余功率随飞行速度的增加而减小，并且飞行速度越大，剩余功率减小的速率也越大；剩余功率随飞行高度的增加而增加，当飞行高度处于10 000～12 000m时，剩余功率随飞行高度增加的速率明显降低；在-10°～10°的俯仰角度内，剩余功率先增加，后随着俯仰角的增大反而减小，俯仰角为3.1°时达到最大剩余功率；飞行速度与剩余功率具有较强的负相关关系，飞行高度与剩余功率之间存在正相关关系，俯仰角与剩余功率之间存在较弱的正相关关系，即飞行速度对剩余功率的影响最大，飞行高度的影响次之，俯仰角对剩余功率的影响最小。

This study examines the effects of flight speed,altitude and pitch angle on the surplus power of a solar-powered UAV during cruise and analyzes the correlations among these three factors and surplus power.Meanwhile,the results are compared and verified with experimental data.The study shows that the residual power decreases with increasing flight speed,and the higher the flight speed,the greater the rate of decrease in residual power.The residual power increases with increasing flight altitude,and when the flight altitude is in the range of 10 000 mto 12 000m,the rate of increase in residual power with altitude is significantly reduced.Within the pitch angle range of-10°to 10°,the residual power first increases and then decreases with increasing pitch angle,reaching its maximum value at a pitch angle of 3.1°．The research concludes that flight speed has a strong negative correlation with residual power,flight altitude has a positive correlation with residual power,and pitch angle has a weak positive correlation with residual power.That is,flight speed has the greatest impact on residual power,followed by flight altitude,with pitch angle having the least impact.