• 한국군사과학기술학회지
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• 제22권5호
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• pp.724-734
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• 2019

This study selected a representative small arm firing range and analyzed the distribution of heavy metal pollutants such as Pb, Cu, Zn, etc. For this the concentrations of heavy metals in soils, roots and leaves of plants, and water of the small arm firing range were measured. The concentrations of heavy metals in the effluent were also checked during precipitation. The concentration of lead in the samples collected from the top soil(0-5 cm) and sub soil(5-50 cm) near the target in the small arm firing range exceeded the concern level of the Soil Environment Conservation Act of Korea, but not in other soil samples. Plants that grow in soil heavily contaminated with lead showed a high lead concentration, especially in roots. However, the concentration of lead in effluent from the small arm firing range was less than 0.02 ppm. The concentration of copper and zinc in the small arm firing range did not surpass the concern level of the Soil Environment Conservation Act of Korea. Through this study more accurate information on the distribution of heavy metal pollution in the soil of the small arm firing range was obtained. Based on this research, we can conclude that some facility improvements can reduce the spreading of pollutants in the currently used small arm firing range and contribute to the design and operation of advanced small arm firing ranges.

• 건축역사연구
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• 제30권6호
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• pp.45-58
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• 2021

This study aims to examine the changes in Pyongyang-bu during the late Joseon period and Pyeong-an Gamyeong through gazetteer, pictiroal maps and various literature. The results are as follows. To begin with, unlike other gamyeong, Pyongyang-bu had an exclusive government office facility from the beginning and had a different status because of the route for envoys from Ming. Therefore historical sites related to Gija were important. Second, the importance of Pyongyang city-wall increased even more through the Japanese Hideyoshi invasions in 1592 and the Manchu Invasion in 1636. However, since the post-war restoration was insufficient they focused on defense reducing the size of Pyongyang city wall. Third, as society stabilized, Pyongyangbu's finances were greatly secured. King Sukjong systematically reorganized Pyongyang city wall and facility of Pyongy-an gamyeong. The nothern wall in located high place, Gamyeong and storage in middle height and military force and guesthouse in the center of Pyongyang-bu. I-a and warehouse facilities in the far south were placed around the Daedonggwan. The urban structure that runs from Daedonggwan to Daedongmun was the same as other city. Another pertinent point is Pyeong-an gamyeong had more military facilities and rear garden and pavilion than before. In clunclusion, Pyeong-an gamyeong did not pass through three gates, but only through two gates. And it was characterized by more various space and having more pavilions than other gamyeong.

• 한국국방경영분석학회지
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• 제34권2호
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• pp.163-174
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• 2008

군은 신뢰도(Reliability)나 가용도(Availability)가 다른 어떤 조직보다 중요한 조진이다. 최근에는 시스템 준비태세(System Readiness)를 강조하며, 무기체계의 성능뿐 아니라 가용도를 중요한 성과 목표로 정의하고 있어 이런 경향은 심화되고 있다. 이런 맥락에서, 군의 중요한 설비나 장비들은 신뢰도(Reliability)와 가용도(Availability) 제고를 위해 만약의 경우를 대비하는 여유 장비를 운용하고 있다. 이를 정비대충장비(M/F Maintenance Float, 이하 M/F) 라고 한다. 군의 정비대충장비는 매년 장비의 수량과 가동률을 적용하여 소요량을 산출하고 있으나, 기존의 방법은 고장특성과 정비부대의 정비능력에 대한 고려가 미흡하여, M/F 도입에 따른 효과인 신뢰도와 가용성 제고를 원래 의도된 목표만큼 달성하지 못하고 있다. 본 연구에서는 대기행렬이론과 흡수 마코프체인을 활용하여, M/F 재고 수준 결정을 위한 분석 모형을 제시하고, 그 결과를 활용하여 역습부대역할을 수행하는 OO부대에서 운용되고 있는 K-1 전차의 운영유지 대풍장비의 최적 수량을 산출했다. 본 연구는기존 연구에 비해 이해가 용이한 (Tractable) 방법론을 활용하면서도 M/F 수준과 관련된 의사결정을 정교하게 묘사할 수 있는 모형을 제시했다는 점에서 의의가 있다.

• 한국건축시공학회지
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• 제20권1호
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• pp.43-51
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• 2020

소부대 방호시설의 주된 목적은 적의 모든 무기체계에 대한 완벽한 방호가 아니며, 한국군의 경우, 지근탄에 대한 방호를 적용하고 있다. 특히 소구경 탄자의 경우, KM 80탄을 기준으로 설정하고 있는데, 이에 대한 경험적 설계방법과 구조공학적 설계방법 모두 현실을 제대로 반영하지 못한다는 선행연구들이 있다. 이에 실사격 실험을 수행한 선행연구에서는 콘크리트 슬래브의 소구경 탄자에 대한 관입저항력 계산식을 제안한 바 있다. 그러나, 해당 실험에서는 콘크리트 강도만을 변수로 설정하였고 콘크리트의의 두께, 굵은골재의 종류, 탄자의 편주각, 고강도 콘크리트 등에 대한 변수가 고려되지 않았다. 따라서 본 연구에서는 콘크리트의 두께와 자철광의 함량에 따른 방탄성능을 평가하였다. 그 결과 탄자의 편주각에 의한 오차를 연발사격에 의해 상쇄시킬 수 있다는 것과 자철광의 함량과 콘크리트 두께는 방호성능 향상에 영향을 주지 않는다는 것을 통계적으로 확인하였다.

• 한국지반환경공학회 논문집
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• 제5권4호
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• pp.47-56
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• 2004

본 연구는 군사시설물 밀집지역에서 발생하는 산사태의 여러 원인을 분석하고 일반 설계에 적용되는 평가기준과 비교하여 군 실정에 적합한 사면붕괴 안전도 평가기준을 제시하고자 한다. 사면붕괴 발생을 예측하기 위해서 강우강도와 사면붕괴 발생과의 관계를 분석하였으며, 사면붕괴 안전성평가 기준표를 이용하는 것을 제시함과 아울러 강원산간 ${\bigcirc}{\bigcirc}$지역에서 발생한 사면붕괴의 발생요인이 되는 강우, 지형, 지질 등의 특성을 파악하고, 군부대 주둔지역에서 나타나는 사면붕괴의 파괴현상과 지역적인 특성을 구명하고자 한다.

• 한국군사과학기술학회지
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• 제7권3호
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• pp.122-128
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• 2004

Internal blast performance test on developed explosives was carried out. Internal blast means a blast wave in closed chambers like tunnels, bunkers, operation center and chamber of ships. We used Anpa tunnel for our test facility. We performed two series of tests to measure internal blast of developed explosives. Three different kinds of cast PBXs, DXD-09, DXD-10, DXD-18, and conventional explosive, Tritonal, were used in our test. The explosives were cast as a charge of 108mm diameter in a plastic tube of a 3mm thickness. The length of charges 4ere adjusted as a weight 3kg. A melt-cast explosive, tritonal, was used as a reference. Pentolite booster was used. The cylindrical boosters have a 95mm diameter and 47.5mm height. The results showed that there may be some differences between the performances in the air blast tests and those in the internal blast tests. The results showed that DXD-10, the best performance in air blast tests, showed the poorest performance in internal blast among the explosives tested. On the other hand, DXD-18 showed exactly the opposite trend. This is probably due to the highest contents of aluminum and inert binder in DXD-18. DXD-18 has $38\;wt\;\%$ of aluminum and $17\;wt\;\%$ of inert binders.

• 한국군사과학기술학회지
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• 제14권6호
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• pp.993-1001
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• 2011

Unmanned ground vehicle for facility protection mostly uses model of territory for autonomous navigation. However, modeling of territory using several sensors is highly time consuming and sometimes inefficient for road application. Therefore, an estimation of drivable path based on features of road is required for high speed autonomous navigation on road. In this paper, an estimation method of drivable path using camera and 2D laser rangefinder is proposed. First, a vanishing point is estimated based on image data from CCD camera. Second, a road width is estimated based on range data from 2D laser rangefinder. Finally, the drivable path is estimated by fusing the vanishing point and the road width. The proposed method is tested on both well-structured road and unpaved road like cross-country situation.

• 한국군사과학기술학회지
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• 제17권2호
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• pp.248-257
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• 2014

As observed in the recent war, suppression of enemy air defense operation is one of the major tactics, simultaneously conducted with high payoff target. Specifically, our air defense operation should be properly constructed, since the operating environment of our forces mostly consists with mountainous terrain, which makes detections of the enemy difficult. The effective arrangements of low altitude air defense radars can be suggested as a way of improving the detection capability of our forces. In this paper, we consider the location problem of low altitude air defense radar, and formulate it as an Integer Programming. Specifically, we surveyed the previous researches on facility location problems and applied two particularly relevant models(MCLP, MEXCLP) to our problem. The terrain factor was represented as demand points in the models. We verified the optimal radar locations for operational situations through simulation model which depicts simple battle field. In the simulation model, the performance of optimal radar locations are measured by the enemy detection rate. With a series of experiments, we may conclude that when locating low altitude air defense radars, it is important to consider the detection probability of radar. We expect that this finding may be helpful to make a more effective air defense plan.

• 한국군사과학기술학회지
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• 제16권4호
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• pp.465-472
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• 2013

Since 1990, Agency for Defense Development is operating the non-magnetic laboratory for the development of key technology for the underwater magnetic stealth part, the research of the magnetic application weapons and the technical support for Korean Navy. Recently, we installed the new three-axis earth magnetic field simulator and the measurement system in the non-magnetic laboratory which is replacing the existing outdated facility. In this paper, we deal with the detailed design result of the earth magnetic field simulator and the measurement system. Also, we describe the effective method to separate the permanent and the induced magnetic field from the measured data for a scaled model ship using the earth magnetic field simulator and the measurement system.

• 한국항행학회논문지
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• 제19권2호
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• pp.103-107
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• 2015

본 논문은 인천국제공항의 공역 수용 능력 향상을 시키기 위한 공역 확보 대안을 제시하고자 한다. 활주로 15/16방향 동시독립접근을 위해서는 ILS 접근절차에 대해 레이더 유도방식으로 관제업무를 제공해야 하므로, 레이더 유도가 가능한 최소 공역을 감안하여 휴전선비행금지구역(P-518) 조정을 제안하며, 동시독립접근이 가능할 경우 교통량 증가로 인한 임시 체공구역 확보를 위하여, 군 훈련공역을 단계적으로 5마일씩 총 10마일을 확보, 오산접근구역 내에 군 훈련공역 일부를 서울접근 관제소에 포함시키는 것을 제안 하고자 한다.