Abstract :
Cargo-X is an UAV aircraft that has been developed with cargo features for the
delivery of ordered goods, highway monitoring, medical, emergency needs (sending
the first aid for accidents) and others. The manufacture of Cargo-X required cargo
door structure design, aerodynamic analysis, and door structure analysis to determine
the value of the maximum stress and deformation as an indicator of the strength and
durability of the structure so that cargo load can be carried to the destination.
In the process of making cargo doors for UAV Cargo-X, cargo door design,
aerodynamic analysis, and static structure analysis are needed, software is needed that
can assist in carrying out the analysis. For cargo door design using CATIA V5R20
software, for aerodynamic analysis using ANSYS V15.0 CFX. While for static structure
analysis using ANSYS V15.0 Static Structural Analysis. After analysis and getting the
stress value, then the marigin of safety calculation is carried out to determine the safety
of the cargo door structure.
Based on the results of testing the cargo door structure, the material used in
the cargo door is plywood, acrylic, expanded polystyrene, and expanded
polypropylene. For the movement mechanism each door is moved by a metal servo with
torque 1.27 N.m. In aerodynamic analysis with a speed of 24 m/ s in cruising conditions
or alpha 0 ° get a drag value of 10.927. The results of structural analysis show that the
maximum stress occurs in the acrylic material precisely on the SS (Rib joints with
servo) with a value of 8.245E + 7 Pa, while the highest deformation value is found in
the plywood and acrylic with a value of 0.000193 m. For the calculation of MS (Margin
of Safety) on each material to get a positive result with MS values on plywood that is
8, Acrylic 0333, and the MS value of the overall material is 0.032, the overall results
indicate that the structure on the cargo door as a whole is safe