基于系统工程的巡航阶段机翼变弯度设计

In response to the environmental and economic needs of large wide body passenger aircraft,it is proposed to add cruise drag reduction function on the basis of traditional high lift control system to achieve take off and landing increase in lift and drag,and to achieve optimal aerodynamic efficiency of the aircraft during long-term cruising through variable camber wing control. Firstly,a requirements analysis is conducted based on the forward design concept of systems engineering,and functional requirements were proposed. Subsequently,physical architecture design is carried out around the requirements and functions,and the security of the architecture is analyzed. Two design schemes,centralized and distributed,are proposed,and their advantages and disadvantages are compared. Suggestions for selecting the scheme are given from the perspective of engineering implementation. Finally,the design of cruise drag reduction control law is carried out,and calculations and simulation analysis are conducted. Calculations show that the design of cruise variable camber wing can improve range,reduce fuel consumption,and meet the environmental and economic requirements of aircraft. The simulation results show that when the autopilot is turned on,the cruise drag reduction function is connected, and the aircraft configuration changes smoothly,meeting the requirements of flight quality.