Abstract :
The initial design of the UAV cargo wing was made without being equipped
with a winglet structure. The specifications and flight capabilities of UAV cargo
allow for induced drag generated by the vortex on the wing during operation. One
of the efforts to overcome this vortex is to add winglet structures. In the first
development of the UAV cargo wing, the addition of a whit comb winglet structure
was carried out which generated in less optimal results. In the second development,
this research was carried out by comparing aerodynamic performance on variations
of the UAV cargo wing model without winglets, with the addition of whit comb
winglets and blended winglets.
This research was conducted using the Computational Fluid Dynamic 3D
simulation method through the fluent Ansys software and also supported by
Solidworks 2018. The simulation was carried out on the UAV cargo wing which has
the basic shape of the NACA 23018 airfoil. The simulation parameter settings were
carried out close to the original conditions at an altitude of 20,000 feet. The output
of this simulation was the value of the lift coefficient, drag coefficient, streamlined
contour and vortex region. The results of the UAV cargo wing research showed that
the addition of the blended winglet increased the wing's aerodynamic performance
by 7.40%, while the addition of the whit comb winglet decreased the wing's
performance by -18.18%.