Construction And Implementation Of Optimization Model For Performance Parameters Of Civil Aircraft

The performance parameters of civil aircraft in route flight affect fuel consumption,time,pollutant emission,and greenhouse effect directly.On the basis of the flight dynamics model and the genetic algorithm,the performance parameter optimization model was established for different flight stages,so that the optimization objective of each flight stage can reach the optimal.Firstly,based on flight dynamic and environmental impact model,the calculation model of flight cost,pollutant emission,comprehensive flight cost,and the quantitative characterization model of the greenhouse effect were established respectively.Then,dual indicated speed climb performance optimization for flight cost,combined optimization model of speed and thrust considering emission cost,and multi-objective combination optimization model considering the greenhouse effect were established respectively for climb stage.And the influencing factors for optimization parameters of climb performance were analyzed.Then,in terms of the descent stage,combination optimization model of indicated speed-Mach for flight cost,combination optimization model of the speed-Mach number considering the emission cost,and the multi-objective considering the greenhouse effect were established respectively.And the influencing factors for optimization parameters of descent performance were analyzed.Lastly,the altitude-Mach combination optimization model for the flight cost,the altitude-Mach combination optimization model considering the emission cost,and the multi-objective combination optimization model considering the greenhouse effect were established respectively for the cruise stage.And the influencing factors for optimization parameters of cruise performance were analyzed.The results show that,for different optimization objectives and flight stages,choosing appropriate performance parameters can effectively reduce flight cost,comprehensive flight cost,and total temperature potential,which can realize the green and economic operation of route flight.