Research on Transition Corridor of Ducted Vertical Take-off and Landing Fixed-wing UAV

Abstract

The accurate description of the transition corridor is important for vertical take-off and landing(VTOL)fixed-wing unmanned aerial vehicle(UAV)flight. In order to study the transitional flight process of VTOL fixedwing UAV,a transition corridor model of this type of UAV is established in this paper. From the perspective of flight dynamics,the deflection angle-speed envelope of the power system is studied by means of the maximum lift coefficient of the wing and the system available power limit. The influence of the overall parameters and energy parameters of the UAV on the deflection angle-speed envelope of the power system is analyzed,and a method to expand the transition corridor of the vertical take-off and landing fixed-wing UAV is proposed. Through case calculations,the transition flight corridor is obtained. The results show that the established deflection angle-speed envelope can perfectly describe the transition flight corridor of VTOL fixed-wing UAV,the 10% increasing of the available power can expand the transition corridor by 21.43%,while the 10% increasing of the aerodynamic parameters can only expand the transition corridor by 2.33 %.

Keywords

• vertical take-off and landing fixed-wing
• flight envelope
• transition corridor
• available power
• stall angle of attack
• force analysis