• 한국항행학회논문지
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• 제25권3호
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• pp.256-266
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• 2021

국내외 연구들은 무인항공기 사고의 주원인으로 인적요인을 지목하고 있고, 이러한 인적요인을 효과적으로 분석하는 기법으로 HFACS를 소개하고 있다. 현재까지는 HFACS를 이용해 무인항공기 사고의 인적요인을 분석했던 국내외 사례는 주로 군용 무인항공기가 대상이었는데, 항공사고를 유발하는 인적요인 정보를 분석하여 객관적 원인 규명과 유사 사고 예방 도구로 사용할 수 있는 HFACS가 국내 민간 무인항공기 분야에서도 활용이 필요한 시점이다. 특히, 국내 민간 무인항공기의 성능과 운용 여건을 고려한 HFACS 적용중점을 식별한다면 사고 발생 시 원인 규명과 재발 방지에 큰 도움이 될 것으로 예상된다. 본 연구는 HFACS version 7.0을 근간으로 우리나라 항공철도사고조사위원회가 수행했던 사고조사 결과보고서 자료를 분석하여 국내 민간 무인항공기 사고조사에 활용할 수 있는 HFACS 적용중점을 식별하였다.

• 인터넷정보학회논문지
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• 제21권2호
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• pp.139-148
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• 2020

현재 우리 군은 과학과 기술의 발달, 2000년대 들어 급격히 심해진 저 출산율, 병 복무기간 단축 등으로 병력위주에서 장비위주로 첨단화, 고속화, 복잡화 되어가고 있다. 즉, 한 번의 실수로 많은 인명피해가 발생할 수 있는 실정이다. 선진국과 민간 안전교육 체계 및 교육성과 등을 분석해보면 군 안전 및 자살사고를 예방하기 위해서는 체험교육이 중요하며, 체계적이고 효율적인 체험교육을 위해서는 안전체험훈련장 건립이 필요함을 알 수 있었다. 지금 입대하고 있는 장병들은 일명 인터넷세대로 태어나면서부터 인터넷을 접하면서 성장하여 가상·증강현실(VR / AR)을 자유롭게 활용하고 있으며, 지금의 과학 기술 수준은 국민안전체험관의 체험실 대부분을 가상·증강현실로 대체할 수 있을 정도의 수준까지 발전하였다. 따라서 군 안전체험훈련장은 설치공간, 건립비, 유지비, 사용자 특성, 교육효과 등을 고려하여 '응급처치'처럼 모형이 효과적인 체험실 몇 개를 제외한 많은 체험실을 가상·증강현실로 건립할 필요성이 있다. 가상·증강현실(VR / AR) 기술의 발전, 국민안전체험관 운용실태, 군 부대 특성, 설치비 및 유지비 등을 고려하여 체험훈련 소요를 도출하였다. 그리고, 국민안전체험관 대비 저비용으로 효과적인 훈련성과를 달성할 수 있는 안전체험훈련장 구축방안과 부대별 교육인원 및 주변 여건에 부합한 안전체험훈련장 규모와 체험실 구성에 대해 제시하였다. 향후 이를 기반으로 안전체험훈련장을 구축하여 체험교육을 한다면 군 안전 및 자살사고를 예방하는데 기여하게 될 것이다.

• 한국자동차공학회논문집
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• 제15권6호
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• pp.114-119
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• 2007

Because the small trailers do not have the main brake system, it is difficult to gain the effective braking performance of the trailers while driving them. Especially it is very hard to brake them on the slope road condition. So we have technically developed Inertia Braking System for the military trailers which have not main braking system. Inertia Braking System is designed to be activated by the inertia force of trailer. It consists of the brake rod, damping cylinder, hand brake lever and brake cables. We have tested the trailer's braking performance. As a result, we have showed that the trailer's braking performance of the trailer equipped with Inertia Braking System, the road driving performance and the braking safety capability are improved dramatically. And we hope that it is rare to happen the accident while driving.

• 한국군사과학기술학회지
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• 제8권2호
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• pp.14-21
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• 2005

This paper describes the system for detecting the tank crew's(loader's) hand, arm, head and the upper half of the body in a danger area between the turret ceiling and the upper breech mechanism by computer vision-based method. This system informs danger of pressed to death to gunner and commander for the safety of operating mission. The camera mounted ort the top portion of the turret ceiling. The system sets search moving object from this image and detects by using change of image, laplacian operator and clustering algorithm in this area. It alarms the tank crews when it's judged that dangerous situation for operating mission. The result In this experiment shows that the detection rate maintains in $81{\sim}98$ percents.

• 한국정보통신학회논문지
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• 제25권1호
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• pp.160-163
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• 2021

In this paper, we present a path search scheme for the safe movement of the swarm of unmanned systems in unknown dangerous areas. Some of the swarm searches for the primary and secondary paths before the majority of swarm move through dangerous areas. In terms of rapid movement from the dangerous area and preparation for an accident, the primary path is searched first in the destination's direction. The secondary path is searched by considering the distance between the paths to guarantee a safe distance. The computer simulations show that the proposed scheme is suitable for the swarm of unmanned systems.

• 품질경영학회지
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• 제43권3호
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• pp.327-340
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• 2015

Purpose : Recently, many quality issues are aroused in military forces, such as failures in K-series weapons, combat uniforms' defects and 40mm ammunition explosion accident. To address these problems, Defense Agency for Technology and Quality(DTaQ) introduced new systems such as Manufacturing Readiness Assessment(MRA), Test Report Information System(TRIS) and so on. However, these activities require the human and time resources which cannot be increased in short period. In this paper, we suggest more practical and efficient product examination method. Methods : The most popular and widely used government's quality assurance technique is a sampling method to examine the product. In this research, we first reviewed the DTaQ's quality assurance regulation, then identified several possible problems and finally suggested more efficient and effective sampling plans. Results : We have suggested new sampling framework and evaluated its performance on two military supplies by comparing with other sampling method, and observed that the number of tested samples can be substantially reduced. Therefore, required quality assurance time can be saved. Conclusion : In this paper, we first reviewed the product examination frameworks of DTaQ, PPQMS and DCMA. Then we identified several possible problems which can cause the loss of objectivity and time. To handle these problems, we suggested the new product examination framework and tested the framework to verify the performance.

• 융합보안논문지
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• 제17권2호
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• pp.137-144
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• 2017

장병들의 무형전력을 구성하는 정신전력은 최근에 우리가 처한 안보상황을 감안할 때 매우 중요하다고 하겠다. 동서고금을 막론하고 전쟁사를 살펴보면 무형전력은 국가의 흥망성쇠는 물론 전쟁의 승패를 좌우하는 핵심적인 요소로 평가되고 있다. 최근 우리 군이 군에서 시행되고 있는 정신교육을 개선하기 위해 나름대로의 노력에도 불구하고 여전히 대다수의 장병들은 정신교육을 '의례적인 교육, 지루한 교육, 시간 때우기 식 교육'으로 여기고 있으며, 불미스러운 군 관련 사건과 사고가 발생할 때마다 정신교육의 효과에 대해 의문과 문제가 끊임없이 지적되고 있는 실정이다. 따라서 본 연구는 바로 이러한 문제의식에서 시작된 것으로서 그 목적은 현행 군 정신교육의 문제점을 분석함으로써 인지중심의 군 정신교육의 발전방향을 모색하여 다변화 시대에 적합한 강군을 양성하는데 방향을 제시하고자 한다.

• 한국군사과학기술학회지
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• 제15권6호
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• pp.746-753
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• 2012

ROK military helicopters are frequently exposed to the hazard situations due to the characteristic of operation. Especially, helicopter accident may lead to critical damage of human and structure. Accordingly, pilots have to train the autorotation procedures and learn the skill to prevent hard landing. In this paper, the behavior of skid gear subject to the helicopter autorotation was conducted by using numerical method. The computer simulation approach by using finite element method was employed to accomplish this goal. Additionally, the behavior of skid gear was evaluated for the different landing conditions. In conclusion, the maximum stress concentration was occurred at the attached area of skid cross-tube to the fuselage. Also, it was revealed that the most proper attitude was level landing to prevent hard landing.

• 한국군사과학기술학회지
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• 제19권3호
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• pp.302-310
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• 2016

An underground ammunition facility requires less quantity distances than the aboveground counterpart. However, chamber blast doors which resist the high blast-pressures are necessary for prevention of the consecutive explosions when an accident explosion occurs at any chamber. This paper aims to propose an procedure for calculation of the design loads for the chamber blast doors. Modeling considerations are drawn through analyzing the influences of the geometrical shapes and mechanical properties of rocks on the propagation of pressure wave along with the tunnels. Additionally, the design loads for the chamber blast doors in a newly-built underground ammunition facility are calculated based on the proposed procedure.

• 한국군사과학기술학회지
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• 제10권3호
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• pp.139-147
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• 2007

In military transportation, the use of wide trailer for transporting the large and heavy weight equipments such as tank, armoured vehicle, and mobile gunnery is quite common. So, the vulnerability of causing traffic accidents for these wide military trailer to bump or collide with another car in adjacent lane is very high due to its broad width in excess of its own lane's width. Also, the possibility of these strayed accidents can be increased especially by the careless driver. In this paper, the recognition system of lane and vehicle headway direction is developed to detect the possible collision and warn the driver to prevent the fatal accident. In the system development, Kalman filtering is used first to extract the border of driving lane from the video images supplied by the CCD camera attached to the vehicle and the driving lane detection is completed with regression analysis. Next, the vehicle headway direction is recognized by using neural network scheme with the extracted parameters of the detected driving lane feature. The practical experiments for the developed system are also carried out in the real traffic road of Seoul city area and the results show us the more than 90% accuracy in recognizing the driving lane and vehicle headway direction.