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 J. KIMS Technol > Volume 20(1); 2017 > Article
 Journal of the Korea Institute of Military Science and Technology 2017;20(1):1-11. DOI: https://doi.org/10.9766/KIMST.2017.20.1.001
 Development Process of Mechanical Structure for a Large Radar Dongjun Shin, Jonghak Lee, Youngsik Kang Mechanical Engineering R&D Lab., LIG Nex1 Co. 대형 레이더 기계구조부 개발 절차 신동준, 이종학, 강영식 LIG넥스원(주) 기계연구소 Abstract In this paper, design requirements of the large radar were investigated, and development was performed through the analysis and design. Large radar should be designed by bearing the 75 knot wind force and $20kg/m^2$ ice mass as operating conditions in order to meet structural stability, and driving torque and bearing load were calculated for securing the driving stability. Thermal dissipation analysis was performed considering TRM and DC-DC Converter's limitation temperature by $50^{circ}C$ ambient temperature condition in order to attain thermal stability, and PSD and shock analysis were carried out by using MIL-STD-810G vibration and shock specification in order to transport and installation of the large radar. As a result, all components of large radar could secure the structural stability more than 2.8 factor of safety, and driving stability was also secured with adequate bearing fatigue life. Thermal stability was attained by allowable max temperature 88.7 C of the TRM, and structural stability for transportation and installation of the large radar was also secured more than 5 factor of safety. After it was transported and installed to the radar site, operating capability was finally verified by rotating the large radar. Key Words: Large Surveillance Radar, Structural Stability, Thermal Stability, Drive Stability, Transport and Installation