• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.434-435
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• 2000

참돔 이리도바이러스 질병(red seabream iridovirus disease ; RSIVD)은 1990년 일본 시코쿠지역의 참돔 양식장에서 처음 발병된 후, 매년 발병지역이 확산되고 발병 어종이 다양해지고 있다. 참돔에서 분리된 RSIV는 icosahedral cytoplasmic deoxyribovirus로서 크기가 200∼240nm이며 형태학적 특징에 의해 iridoviridae로. 분류하고 있지만, 어류를 숙주로 하는 iridovirus과 중에서 lymphocystis virus속인 flounder virus(LCDV-1) 및 lymphocystis disease virus(LCDV-2)와 goldfish virus 1-lke virus속인 goldfish virus 1(GFV-1) 및 goldfish virus 2(GFV-2)와는 전혀 다른 바이러스로 알려져 있다. (중략)

• Journal of the Korea Institute of Military Science and Technology
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• v.20 no.6
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• pp.794-802
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• 2017

Unmanned Aerial Vehicles (UAVs) have been considered as valuable aerial reconnaissance systems and our army wants capability-enhanced UAVs installed in our territory, hoping that the UAVs will provide enemy information in detail. The enemy information acqcuired by UAVs would be shared by our army's legacy systems. In this article, we made a research on the interoperability between UAVs and Ground Fighting Vehicles (GFVs), laying emphasis on what kinds of tactical information could be exchanged by two different weapon systems. Also, it needs to be addressed that their upper-level commanding systems play a significant role in such operation.

• Journal of the Korea Institute of Military Science and Technology
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• v.19 no.6
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• pp.752-761
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• 2016

Tactical Multiband Multirole radio(TMMR) has been developed and under some official testings now. Our army wants TMMR to be installed in Ground Fighting Vehicles(GFVs) and be incorporated with their Battlefield Management System(BMS). Also, BMS with TMMR should communicate with BMS on FM radio which is currently under use in most of GFVs. To achieve such goals, some significant changes should be made into the present BMS and in this paper, several considerations will be presented in the both sides of hardware and software point of view.

• Journal of the Korean Society of Propulsion Engineers
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• v.14 no.4
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• pp.1-9
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• 2010

Fuel shutoff valve of a gas generator controls propellant mass flowrate of a rocket engine, by using pilot pressure and spring force. The developing fuel shutoff valve can be self sustained even though pilot pressure is removed in an actuator. Therefore, it is necessary to analyze the characteristics of the forces with respect to the opening and closing of the valve in order to evaluate its performance. In light of this, the valve has been designed to adjust the control pressure for the opening of the poppet and to determine the working fluid pressure at which the valve starts to close. This paper also has been designed dynamic model using the AMESim and predicted flow coefficient of the valve by Fluent CFD analysis. Various results from the prediction and the analysis have been compared with experiments. Finally, dynamic characteristics of the valve have been verified with experimental results.