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针对悬停状态四旋翼植保机在不同轴间距下对推力的影响进行研究。以十字形四旋翼植保机相邻螺旋桨轴间距作为研究对象,为消除外界因素对轴间距推力实验的影响,先后进行地面效应分析、实验平台搭建、实验平台误差测量实验,最后进行轴间距对推力性能影响实验,并对实验所测得数据进行分析。实验结果表明:轴间距的大小对相邻螺旋桨推力损失影响很大,间距较小时影响尤为突出,在大区间轴间距为(2.1～3.0)R之间变化时,推力先增大后减小最后趋于稳定值,当间距为2.5R时所产生的推力最大。细化小区间(2.4～2.6)R,得到推力变化趋势与大区间相似,但间距为2.5R1时所产生的推力最大。
Aiming at the effect of hovering four-rotor plant-protection machine on the thrust at different axial distances, In order to eliminate the influence of external factors on the axial thrust test, the ground effect analysis, the experimental platform setup and the experimental platform error measurement experiment were carried out. Finally, the axial distance between the propeller axis and the axial distance Performance impact experiment, and experimental data measured. The experimental results show that the axial distance has a great influence on the thrust loss of the adjacent propellers, especially when the spacing is small. When the axial distance between the large sections varies from (2.1 to 3.0) R, the thrust first increases and then decreases Tends to a stable value, when the pitch is 2.5R maximum thrust produced. The thinning interval (2.4 ~ 2.6) R, get the thrust change trend similar to the large interval, but when the pitch is 2.5R1, the thrust produced is the biggest.