近年出现了多种结构新颖、性能先进的垂直起降无人机,多以升力风扇作为升力装置;升力风扇作为直接升力装置,拥有诸多新特点。简单介绍了升力风扇工作过程,在此基础上建立起升力风扇基本分析模型,并对该模型进行了深入的分析讨论,得出了一些表征升力风扇基本特性与其核心部件风扇之间内在关联的规律;最后据此模型初步设计出一升力风扇,并对其进行数值模拟计算,结果表明该模型具有很高的准确性与实用性。 In recent years, a variety of novel structures and advanced vertical take-off and landing unmanned aerial vehicles, and more to lift fan as a lifting device; lift fan as a direct lift device, with many new features. The working process of lift fan is briefly introduced. Based on this, a basic analysis model of lift fan is established, and the model is analyzed and discussed in depth. Some laws that characterize the basic characteristics of lift fan and its core components are derived Finally, a lift fan was designed based on the model and the numerical simulation was carried out. The results show that the model has high accuracy and practicability.