OPTIMISASI KARAKTERISTIK RADAR CROSS SECTION PADA UNMANNED COMBAT AERIAL VEHICLE BERBENTUK FLYING WING MENGGUNAKAN PERANGKAT LUNAK FEKO

• Main Author: Perbawamukti Hidayat, Shiddiq
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/37886
• Institution: Institut Teknologi Bandung

Radar is an equipment that have been widely used around the world. The simplest way to describe how radar work is, radar sent an electromagnetic wave to the target area and capture the reflection from it. The ability of radar to capture target is determined by the target radar cross section (RCS). The lower RCS value of a target, the harder for radar to capture the signal from target. The thesis work begin by doing some literature study about basic radar principle and theory that support the RCS reduction and simulation. Based on the theory and work steps from literature study that had been done, there would be some RCS simulation done on simple shape object using FEKO software and MLFMM method to determine relationship between object characteristic RCS value the object will generate. For the object material, perfect electric conductor (PEC) wass used. For the radar electromagnetic wave frequency, one gigahertz (GHz) wave was used. The simulation result shows that flat plate shape can reduce RCS if relative angle is under 80 degree or above 120 degree. Based on data from simple shape RCS simulation, then the simulation would be done to the complex object which in this case was unmanned combat aerial vehicle (UCAV) with flying wing configuration. Based on the data of UCAV simulation, delta shape has the lowest RCS. From the previous research about aerodynamic performance of flying wing shape had been known that conventional wing have the best aerodynamic efficiency compared to another shape. Because of that reason, conventional flying wing shape will be optimized by using a simple flat plate shape to reduce its RCS value. RCS simulation after optimization has been done shows that RCS value of conventional shape can be reduced and come near to delta RCS value without interfering aerodynamic characteristic. Based on that point, conventional shape was the most balanced shape between aerodynamic characteristic and RCS value.