Optimization of blade profiles for a coaxial drone
Master thesis
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https://hdl.handle.net/11250/2786230Utgivelsesdato
2021Metadata
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Sammendrag
In the civil market, an increase in the demand for drone technology has given rise to rotor bladedesign. Much research has to undergo to enhance the efficiency of propellers. In this research, wewant to improve the propeller design efficiency in terms of flight endurance. The main goal is inthe variation of axial separation by using computational fluid dynamics in OpenFOAM. We foundthat the variation of distance between two propellers has improved overall efficiency significantlyduring computational analysis. At the lowest separation, the interference disturbance created bythe lower propeller affects the upper propeller performance by lowering total thrust. However, ifwe increase the distance, the lower propeller faces the downwash created by the upper propellerresulting in the efficiency loss of the lower one. One can increase or decrease the axial separation,but the overall efficiency would remain the same. Hence, it has been found that at 0.65z/R, wehave the maximum efficiency.