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스마트폰을 활용한 소형 저가 유도탄 유도조종장치용 어플리케이션 개발
노정훈(Junghoon Noh),조경국(Kyongkuk Cho),김성준(Seongjun Kim),김원섭(Wonsop Kim),정진섭(Jinseob Jeong),상진우(Jinwoo Sang),박청운(Chung-Woon Park),공민식(Minsik Gong) 한국항공우주학회 2017 韓國航空宇宙學會誌 Vol.45 No.7
최근의 무기체계에서는 효율적으로 적진을 탐색, 타격할 수 있는 저가의 소형 유도무기 개발이 많이 요구되고 있다. 이처럼 저가의 소형 드론형 무기의 제어를 위해서는 무선 인터페이스, 자세제어 위치탐색 타깃 탐색들을 위한 다양한 센서들과 고성능 카메라, 그리고 이를 실시간으로 통합하여 처리할 수 있는 고성능의 프로세싱 능력들을 갖춘 통합 전자장치가 필수적이다. 본 논문에서는 이를 위한 솔루션으로 안드로이드 스마트폰을 통합 전자 제어장치로 제안하고, 유도조종 알고리듬을 수행할 어플리케이션을 구현한다. 제안된 어플리케이션을 실제 스마트폰에 올려 비행모의 시뮬레이션을 통해 성능을 분석한다. In the recent weapon system trend, it is required to develop small and low cost guidance missile to track and strike the enemy target effectively. Controling the such small drone typed weapon demands a integrated electronic device that equipped with not only a wireless network interface, a high resolution camera, various sensors for target tracking, and position and attitude control but also a high performance processor that integrates and processes those sensor outputs in real-time. In this paper, we propose the android smartphone as a solution for that and implement the guidance and control application of the missile. Furthermore, the performance of the implemented guidance and control application is analyzed through the simulation.
수치해석을 이용한 친환경 자동차용 전력변환장치의 유로 변화에 따른 냉각 성능 예측에 관한 연구
노정훈(J.H. Noh),이현경(H.K. Lee),고동신(D.S. Ko),허덕재(D.J. Hur) 한국전산유체공학회 2018 한국전산유체공학회지 Vol.23 No.4
In this study, the cooling performance of various cooling water channels was evaluated by numerical analysis in order to reduce the weight reduction, miniaturization and high efficiency of the power converter (DC-DC converter) mounted on the electric vehicle. As the analysis environment, heat sources (Diode, Rectifier, Inductors) have the constant heat generation values and fixed position. The pressure drop, internal maximum temperature and calorific value recovered by the cooling water were predicted according to the change of volume flow rate and cooling water flow direction. From the results, it was confirmed that the performance were changed according to the cooling channel pattern at the same volume flow rate, and the amount of volume flow rate at each pattern. In addition, it was found that the direction of the cooling water is an important factor for determining the cooling performance, and the optimum design of heat source layout is required for improving the cooling performance. The results obtained from this study would provide an important guideline for designing the cooling instrument as well as power conversion system, and would be helpful in selecting the dominant factors for the optimum design.