• 한국항공운항학회지
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• 제24권3호
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• pp.55-61
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• 2016

Among the method of aerial fire firefighting, the indirect attack is efficiency way to protect main facilities and it is the aerial fire line construction. According to this study is suggested the fire line construction strategy of indirect attack by helicopter suitable Korea forest fire on theory consideration of indirect attack and experience in practical scene. This study defined that main key points of the fire line construction are accuracy, large quantity, and quickness. Main protection facilities are devided as caution area, warning area, danger area and concern area. Also, it suggested stage-by-stsge from 1 step to 3 step for the aerial fire firefighting correspondence strategy and the fire line construction model. I regard that this study's indirect attack method of the aerial fire firefighting of the fire line construction may be understand about indirect attack tactics and application of indirect attack which is assistance to raise of capability of the aerial fire firefighting with effectiveness and efficiency.

• 한국화재소방학회논문지
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• 제26권2호
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• pp.97-104
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• 2012

본 연구에서는 산불이 발생하면 대형화 위험성이 증대하여 항공기 특히, 헬기의 산불진화 활용성이 점차 증가되고 있는 관점에서, 산불진화 과정 중 헬기에 의한 공중진화기술과 안전성 향상은 효율적인 산불진화의 성공요인으로서 매우 중요하다. 따라서 우리나라 산불전문기관인 산림청 산림항공본부의 조종사들에 대하여 산불현장에서 실제 경험한 내용을 토대로 설문조사를 실시하여 효율적인 공중진화기술 및 안전성 향상 방안을 제시하였다.

• 한국화재소방학회논문지
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• 제23권2호
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• pp.96-100
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• 2009

우리나라는 최근 숲이 우거져 있어 산불이 발생하면 대형화 위험성이 증대하고, 인력접근이 제한되어 항공기에 의한 진화율이 90% 이상이 된다. 그러므로 항공기 특히 헬기의 산불진화 활용성은 점차 증대 될 전망이다. 아울러 산불진화의 전 과정에 있어서 헬기 물 살포 기술은 안전한 헬기운항과 효율적인 산불진화의 성공요인으로서 특히, 표준화된 물 살포 기술은 매우 필요하다. 그러나 아직 헬기 물 살포 기술이 표준화 되지 않으므로 인하여 산불진화의 효율성과 안전성이 떨어지고 있다. 따라서 본 연구에서는 산불 현장 공중진화 경험을 바탕으로 11개의 헬기 물 살포 유형을 제안하였다.

• 한국화재소방학회논문지
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• 제24권5호
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• pp.26-31
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• 2010

본 연구는 우리나라의 각종 소.중형 및 대형 산불의 공중진화 경험을 바탕으로 산불행태와 헬기의 현장운영을 고려한 산불 공중진화 방화선 구축형태 및 진화방법에 대하여 제안하였다. 산불확산은 현장의 지세, 경사, 바람, 수종 등에 영향을 받으므로 공중진화 방화선을 구축할 때에는 연소방향 및 형태, 강도 등을 분석한 후 진화작업을 실시하여야 하며, 특히 연기로 인하여 시계가 방해 받으므로 안전을 고려해 진화작업을 하는 것이 중요하다. 따라서 본 연구에서는 산불현장 공중진화 경험을 바탕으로 A형에서 M형까지 13개의 산불 공중진화 방화선 구축형태 및 진화방법을 제안하였다.

• 산업경영시스템학회지
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• 제35권2호
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• pp.37-44
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• 2012

This paper focuses on scheduling problems arising in the military. In planned artillery attack operations, a large number of threatening enemy targets should be destroyed to minimize fatal loss to the friendly forces. We consider a situation in which the number of available weapons is smaller than the number of targets. Therefore it is required to develop a new sequencing algorithm for the unplanned artillery attack operation. The objective is to minimize the total loss to the friendly forces from the targets, which is expressed as a function of the fire power potential, after artillery attack operations are finished. We develop an algorithm considering the fire power potential and the time required to destroy the targets. The algorithms suggested in this paper can be used in real artillery attack operations if they are modified slightly to cope with the practical situations.

• 한국화재소방학회논문지
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• 제21권3호
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• pp.8-14
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• 2007

산불현장에서 산불진화 단계에 따라 조치하여야 할 국유림관리소의 개인별 임무 역할 수행내용에 대한 행동매뉴얼 구축방안을 제시하였다. 본 매뉴얼의 적용범위는 (1) 헬기 도착 전에 초기산불 진화에 활용, 2) 헬기 투입 후 지상진화지원 활동에 활용, (3) 헬기 철수 후 뒷불진화에 활용, (4) 헬기진화 불가능한 야간진화에 활용에 두었다. 또한, 본 매뉴얼은 주로 현장진화 지휘자 또는 담당자의 임무를 산불대응 단계에 따라 제1단계인 산불접수단계에서 10단계 철수단계에 이르기까지 총 10단계로 구별하여 정리하였으며, 진화대원들이 평상시 이를 숙지하여 진화대원의 안전은 물론이고 체계적이고 신속한 현장 대응을 통해 산불로부터 인명, 재산피해 및 산림피해를 감소시키는데 기여하고자 개발하였다.

• 한국군사과학기술학회지
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• 제17권4호
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• pp.448-455
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• 2014

Virtual Fire Control System(VFCS) in attack helicopter is developed. VFCS is comprised of multifunction display, store management computer, mission computer, target acquisition and designation system, mission planning system, weapon simulator and flight simulator. Weapon engagement process under the operational environment of helicopter was considered by using the VFCS. We considered hellfire missile, tow missile, unguided rocket and turret gun. The results of this study will be utilized efficiently on integrated fire control system SIL(System Integration Lab.) in attack helicopter.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2009년도 정기 학술발표대회
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• pp.101.2-101.2
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• 2009

• Steel and Composite Structures
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• 제37권5호
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• pp.589-603
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• 2020

This paper presents an investigation of the thermal performance of composite floor slabs with profiled steel decking exposed to fire effects from floor. A detailed finite-element model has been developed by representing the concrete slab with steel decking under of it and steel beam both steel parts protected by intumescent coating. Although this type of floor systems offers a better fire resistance, passive fire protection materials should be applied when a higher fire resistance is desired. Moreover, fire exposed side is so crucial for composite slab systems as the total fire behaviour of the floor system changes dramatically. When the fire attack from steel parts, the temperature rises rapidly resulting in a sudden decrease on the strength of the beam and decking. Herein this paper, the fire attack side is assumed from the face of the concrete floor (top of the concrete assembly). Therefore, the heat is transferred through concrete to the steel decking and reaching finally to the steel beam both protected by intumescent coating. In this work, the numerical model has been established to predict the heat transfer performance including material properties such as thermal conductivity, specific heat and dry film thickness of intumescent coating. The developed numerical model has been divided into different layers to understand the sensitivity of steel temperature to the number of layers of intumescent coating. Results show that the protected composite floors offer a higher fire resistance as the temperature of the steel section remains below 60℃ even after 60-minute Standard (ISO) fire and Fast fire exposure. Obtaining lower temperatures in steel due to the great fire performance of the concrete itself results in lesser reductions of strength and stiffness hence, lesser deflections.

• 시스템엔지니어링학술지
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• 제6권1호
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• pp.33-39
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• 2010

Anti-surface missiles have been the most dangerous threat to the surface ships, therefore analyzing the defense effectiveness of surface ships against diverse anti-surface missiles attack strategies is very important to evaluate and anticipate the naval combat ship's abilities in terms of AAW (Anti-Air Warfare). In this paper, we don't study on the defense effectiveness of a ship against a missile, but focus on the defense effectiveness for surface ships against multiple missiles specialized in strategies of anti-surface missiles; ripple fire attack and simultaneous time on target attack (STOT). So, we conduct a variety of monte-carlo simulations with high-fidelity simulators, analyze the measure of defense effectiveness for the key factors of strategies and evaluate the effects and possible interactions of several factors through the analysis of the design of experiment (DOE).