航空器总体设计；系统与机载设备及零部件设计、集成、制造、试验、销售、修理、服务及相关业务；军民用机场地面保障设备及相关产品研制开发、生产、销售、修理及相关业务；军民用飞机加改装及维护；无人飞机设计、制造、装配、销售及服务；航空器流体动力模型设计、制造及试验服务；模拟器及仿真设备、民航乘务培训设备设计、制造、销售及服务；航空器试验设施、试验件、工装夹具、模具的设计、制造、安装集成、销售及服务；航天、船舶、列车装备的结构与系统设计、集成、制造、试验、销售、修理、服务及相关业务，试验设施、试验件、工装夹具、模具的设计、制造、安装集成、销售及服务；机电工程设计、制造、安装、调试、试验及相关服务；制冷设备、复合材料零部件的设计、制造安装及服务；IT工程、测控系统、网络安防的设计开发（含软硬件）、集成、安装、调试及技术服务；高新技术项目投资，技术开发、服务、转让及咨询；自营和代理商品和技术的进出口（国家限制进出口的除外）；房屋租赁业务。（依法须经批准的项目，经相关部门批准后方可开展经营活动）
The development of information technology plays an important role in promoting the development of modern society and economy. This paper first describes the application significance of computer technology in enterprise information management, then discusses the existing problems in the application of computer technology in enterprise information management, and finally puts forward targeted solutions to provide reference for improving the efficiency and quality of enterprise information management.
The wide application of science and technology accelerates the development of information construction in our country, especially under the background of big data, provides the solid foundation for enterprise computer information construction. From the current situation, the traditional enterprise management mode has been unable to meet the needs of modern development, so it is necessary to innovate the enterprise management mode. Computer information construction can well meet this demand, can provide more selectivity for enterprise development and management, to ensure the stable development of enterprises. Based on this, this paper gives a detailed overview of the relevant contents of enterprise computer information construction in the era of big data.
Aileron stiffness simulator is a device to simulate the support stiffness of aileron actuator,which is a key device in airplane ground test. The research on the stiffness simulator is beneficial to its design and application,and has important engineering value. In this research,in order to establish the mechanical model accurately,the stiffness reduction factor is proposed. And the correctness of the mechanical model and simulation is verified through the stiffness test. Lastly,the thickness of the simulator is optimized based on the sensitivity of the target stiffness with distance. The results show that the stiffness reduction factor can be used to quickly predict the stiffness,and 7 mm is the optimal stiffness plate thickness of the simulator.
