At present the installation of aeroengine overall unit to the aircraft body is mostly realized by manual work with man-powered vehicle. To solve its defects of poor efficiency, high labor intensity, easy scratch of aeroengine and so on, a kind of precise numerical-controlled (NC) installation method has been studied. An aeroengine NC installation vehicle based on visual monitoring was developed. And the freedom of the multi-axis attitude adjusting platform in the vehicle was analyzed. Experimental researches have been accomplished for the installation of aeroengine. Experimental results showed that the method and the equipment for aeroengine NC installation had the superiority of convenient operation and high visual degree. The efficiency of the installation for aeroengine was increased by more than one time with the location preci-sion being limited in 0.2mm and the attitude precision being limited in 20'. Meanwhile, the scratch between the aeroengine edge and the engine cabin is avoided in the installation process.%目前大型航空发动机整机在机身中的安装多采用机械架车手工作业方式,针对其效率低、劳动强度大、易磕碰发动机等缺点,提出了航空发动机数控精准安装方法,开发出基于视觉监测的航空发动机整机数控安装架车,分析了数控安装架车多轴调姿平台的空间自由度,进行了航空发动机整机安装验证试验.结果表明,所研制的航空发动机数控安装方法及其装备具有操作轻便、可视化程度高等特点,航空发动机整机安装效率可提高1倍以上,架车的位置操控精度控制在0.2mm以内,姿态操控精度在20'以内,避免了安装过程中发动机外缘与机身发动机舱的磕碰.
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