LAPAN Surveillance Aircraft (LSU)-05 NG is the latest developed unmanned aircraft in the aviation industry, which has a mission for maritime surveillance. Design requirements and objectives have been determined for the aircraft performance. Some improvement of the design needed to achieve the requirement and to get the optimum aerodynamic performance, including to determine the high lift device design. The selection of suitable high lift device type for UAV LSU-05 NG model has been made and also the numerical analysis using CFD for 2D and 3D at wing level has been performed to get the optimum design of high lift device. The selection of HLD type also considered of simplicity of manufacturing and mechanism by qualitative. Finally, the high lift device type which has an optimum performance for unmanned aircraft is plain flap-type with a 10.20% lift increasing at 15 m/s stall speed at take-off compared to the wing configuration without flap. The final configuration has the runway prediction with 170 m distance, which is within the requirement.

Topics
High-lift device, Aviation, Aerodynamics, Aircraft, Industry
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