Vol. 2 No. 2 (2016): HASIL PENGUJIAN MODEL UJI PTTA/PUNA MALE PADA TEROWONGAN ANGIN

The making of model test of Unmanned Aerial Vehicle (UAV)/Puna Medium Altitude Long Endurance (MALE) can not be separated from value correction system in the testing of some parameters. Initial testing uses simulation provided by Computational Fluids Dynamic (CFD). The resulted data will be compared with data gained from model test in wind tunnel. Afterwards, we analyze the compatibility between aerodynamics moment, pressure, temperature, model’s strain, and magnetic field around the model, related to optimal drag force and lift force according to determined aerodynamics standard. In order to administrate the testing on wind tunnel, we build model test from aluminium foil. The testing was held using closed subsonic tunnel with speed of 70 m/s, test section of 3 x 4 m, and 1:5.5 scale. This model test uses strut on UAV’s wings with upside down instalation. The analysis of model test resulted CLmax of 1.35 (with targeted value 1.55), for maximum CL/CD 21 (with targeted value 22). Therefore, we need to change the drawing and model test, especially on its fuselage’s shape, from 75% become 25% lower to the ground. As for the V tail, we need to widen its angle.