Aerodynamics Layout Design and Performance Analysis for Rotary Wing MAV
|Nanjing University of Aeronautics and Astronautics
|MAV Rotor aircraft Aerodynamic layout Aerodynamic characteristics Ducted fan
MAV special flight performance and potential applications , are increasingly subject to national military and civilian sectors, and the attention of researchers . Has developed a variety of different functions , different configurations and different aerodynamic layout MAVs , such as : fixed-wing , rotary wing and flapping wing type . The fixed-wing and flapping wing can fast forward flight , rotor can take off and land vertically and hover . But both VTOL and hover , but also fast forward flight of the aircraft is not much. The advantages of the article fixed-wing and rotary-wing aircraft , the structural type of the application of the ducted fan design the layout of a new type of pneumatic micro - rotor aircraft can achieve VTOL , hover and fast forward flight . This paper first analyzes the micro- rotor for low Reynolds number , application Momentum blade element theory its aerodynamic characteristics ; In order to facilitate the performance analysis of the entire aircraft and CFD aircraft model , in particular rotor model made ??appropriately simplified rotor role as a source of momentum for processing , the introduction of a custom function embedded CFD calculation program application of CFD method were calculated ; meshing and boundary conditions in the computational domain , the rear fuselage culvert Road closed , open the rear fuselage ducted ducted open and the rear fuselage and tail three different aerodynamic characteristics of the aerodynamic structure . By computational analysis found that the design of the aircraft in hover and forward flight speed , the pull of gravity of the aircraft with aircraft before flying the resistance provided by the aircraft thrust and fan torque and counter torque between basic trim can take off and land vertically , hover and fast forward flight .