该文研究了非理想太阳帆航天器的时间最优交会任务。采用太阳帆光学模型,建立了量纲归一化的3维动力学方程。在只考虑太阳引力和太阳光压力的情况下,应用间接法建立了包含发射窗口的交会任务时间最优控制模型。详细推导了光学模型太阳帆的最优控制律。采用美国国家航空航天局(NASA)的非理想太阳帆试验数据,研究太阳光压因子为0.05至0.1的太阳帆金星交会任务。仿真发现,太阳帆航天器轨道设计时需考虑非理想模型的影响,非理想太阳帆飞行时间较理想太阳帆有所增加,且姿态控制规律有所不同。 This paper studies the optimal time assignment of non-ideal solar sail spacecraft. Using the solar sail optical model, the dimensional normalized 3-D kinetic equation was established. Under the circumstance of considering only the solar attraction and the solar pressure, an indirect optimal control model of the rendezvous mission time with launch window is established by using the indirect method. The optimal control law of optical model solar sail is deduced in detail. Using NASA’s non-ideal solar sail test data, the Solar Venus Venus assignment at solar pressure factors of 0.05 to 0.1 was studied. The simulation shows that the design of solar orbital orbiter should consider the impact of non-ideal model, and the non-ideal solar sail has better flight time, and the attitude control law is different.