Formation Flight Strategy And Effect Analysis Based On Wake Vortex

This article mainly introduces how the rear aircraft can reduce the flight resistance by ueing the up-wash flow of the lead aircraft in formation flight.Firstly,the formation process and dissipation mechanism of the aircraft wake are introduced.Through the analysis of the twostage dissipation process of the wake,a model for calculating the induced velocity of wake vortexes is established,it is found that the influence of different induced velocities on the aircraft after the wake is quite different.For the formation flight of civil aircraft,the safety of formation flight is firstly analyzed.By comparing the roll torque coefficient with the required roll angular velocity,the required roll angular velocity was selected as the evaluation index to evaluate the safety of the rear aircraft,the wake safety evaluation model was established and its safety threshold was calculated.Under the premise of ensuring the safety of the rear aircraft in formation flight.After discussed the feasibility of the induced drag reduction machine,the machine after washing on wake airflow in flight,similar to the formation of migrating geese,can reduce resistance,in turn,reduce the fuel consumption,economic benefits and intuitive,machine after flight drag reduction is to measure.The induced drag reduction effect evalution model was set up.Determine the best position of the rear aircraft in the two-plane formation,in this paper.After the formation of the machine are studied,the best formation position.The formation position is not fixed,and different environmental factors will have a certain influence on the optimal formation position.Then,the induced drag reduction effect is calculated,and then the influence of the different factors on the induced drag reduction effect is analyzed.The formation flight of civil aircraft can optimize the existing routes and reduce the overall fuel consumption,so it has a broad application prospect in the field of civil aviation.