DESIGN AND BUILD UAV WITH COAXIAL PROPELLER

Abstract

The UAV had been designed in order to meet the specifications required for surveillance and reconnaissance mission. It followed the global UAV designs in this industry where the pusher configuration is dominating over the various other conventional probabilities. A project was undertaken to study & design Co-axial propeller for Small unmanned aerial vehicle UAV .the study started from the comparison between three practical steps ; single propeller , single propeller with forward or rearward cascade & Co-axial propeller. The choice appeared to select a cascade propeller engine to obtain best criteria with less cost. The design had to be compatible with the propeller design work being done concurrently. Of particular interest was comparing the resulting thrust to propel the UAV at a given airspeed. The entire propeller design process from airfoil selection to final part generation in computer-aided drafting program is mentioned. The Clark-y airfoil defined the propeller cross section. Design of propeller blades and mechanism to compare the output thrust between them and determine power that required rotating propeller. Modification of the mechanism and the manufacture of propeller from the prototype to the final model will be experimented and discussed throughout the project. Static and dynamic analysis for a stability model using the digital DATCOM had shown UAV is stable statically and dynamically, and a Simulink model was developed to verify the dynamic modes. A structural analysis was further initiated to assess the loads acting on individual components and whether they can sustain the loads or not.