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저온조건 비행환경모의 시험을 위한 시험설비 최적화 방안에 대한 연구
정광수(KwangSoo Jung),정규진(GyuJin Jung),최영환(YoungHwan Choi),이준원(JoonWon Lee) 한국추진공학회 2020 한국추진공학회 학술대회논문집 Vol.2020 No.11
항공 추진에 사용되는 개발 엔진의 성능을 검증하기 위해서 비행 환경을 모의할 수 있는 시험설비가 필요하다. 본 논문에서는 비행 환경 중 저온 상태에서 개발 엔진의 성능을 검증할 수 있는 저온조건 비행환경모의 시험설비 방안에 대해 연구하였다. In order to verify the performance of the development engine used for aviation propulsion, a test facility that can simulate the flight environment is required. In this paper, a study was conducted on a test facility for a low-temperature flight environment simulation that can verify the performance on the developed engine in low-temperature condition.
경동맥 혈관확장술과 스텐트삽입술 후에 발생한 치명적인 두개내출혈
김광수,정규식 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.2
Cerebral hyperperfusion with intracranial hemorrhage is a rare complication of carotid angioplasty and stent placement. A 71-year-old man presenting with dysarthria underwent carotid angioplasty and stent placement for 85% and 90% stenosis of the right internal carotid artery. At 14 hours after carotid stenting the patient suddenly had generalized tonic-clonic seizures and deteriorated. Brain CT revealed hematomas in the right frontal lobe and right basal ganglia and diffuse subarachnoid hemorrhage with acute hydrocephalus. He subsequently died 11 hours later. We report the occurrence of fatal intracranial hemorrhage in a patient undergoing carotid angioplasty and stent placement
동다이케스팅을 이용합 프리미엄 효율 유도전동기 설계 연구
김광수(Kwangsoo Kim),김미정(Mi-Jung Kim),함상환(Sang-Hwang Ham),이주(Ju Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Recently, the Interest about energy saving is increasing continuously because of high oil price and energy resources limit. It is necessary that the Premium Efficiency Motor have to be developed to cope with a rise of electric power consumption year after year, to overcome energy resource shortage, and to enforce the MEPS (Minimum Energy Performance Standard). To design premium efficiency induction motor, first, we need to study design process of high efficiency induction motor using basic design principle. Through the copper die-casting technology is applied to rotor of design model instead of aluminum die-casting, we can achieve design of premium efficiency motor. In this paper, new design flow of induction motor is proposed for high efficiency. And the characteristics of induction motor with copper die-casting rotor are described.
김광수(Kwangsoo Kim),김명섭(Myoung Sub Kim),김강대(Kang Dae Kim),정덕채(Duk Chae Jung),김동수(Dong Soo Kim),최병오(Byung Oh Choi) 한국유체기계학회 2008 유체기계 연구개발 발표회 논문집 Vol.2008 No.-
In this paper, we designed sandwich type pressure regulator for air pressure control system. As a result of research, we obtained several important conclusion. First, we decided theory of popper valve and relief valve which are used in sandwich type pressure regulator, and then designed prototype of pressure regulator. Second, we organized circuit diagram of dual pressure regulator of air pressure control system.