• Journal of the Korean Society for Aviation and Aeronautics
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• v.27 no.2
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• pp.37-46
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• 2019

Although This study is to produce various considerations for the proper time and feasibility of new runway with Incheon international airport $4^{th}$ runway development case. In order to validate the feasibility of runway development, it is main considerations to be increased airport capacity for accommodating increase air traffic demand, secure stable airport operation without degrading service level, cope with emergency situation and maintain competitive among competitive airports which are developing new runway. Conclusionally, to develop new runwlay at the proper time for sustainable and stable airport operation without stop is the best way of maintaining competitiveness among foreign competitive airports.

• International Journal of Highway Engineering
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• v.12 no.3
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• pp.59-70
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• 2010

More than 10 different cases of airline overrun accidents happened annually home and abroad in recent years. So the government put the guidelines to protect that kinds of accidents, which is named 'Runway End Safety Area'. However, the great part of airports are far from the standards, because most of the airports have been built before the guidelines. Moreover, in many cases natural obstacles, ambiance, and local area developments obstruct the extension of the runway to meet the criteria. For these reasons, the Federal Aviation Administration (FAA) recommends that the aviation fields construct 'Aircraft Rapid Arresting System(ARAS)' at the end of the runway. Many airdromes have been constructing the system and some airports have already completed the construction. In this research, our team performed a basic study about low strength perlite concrete to provide the proper material with 'ARAS'. As a result, the unit weight of the low strength perlite concrete was $4.5{\sim}6.4kN/m^3$ and uniaxial compressive strength was measured in the range of $400{\sim}1,470kN/m^2$. In addition, we tested penetration compressive strength by using CBR tester, and we observed that the strength was increased after around 60% of penetration rate. Also, 40% of penetration rate was measured through the penetration test with dump trucks.

• International Journal of Highway Engineering
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• v.13 no.1
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• pp.185-195
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• 2011

Aircraft-related accidents cause mass casualties and major material damages. At present, runway-related accidents in our country account for 28% of all air accidents. Furthermore, internationally 33% of all air accidents is connected with runway. To prevent these accidents, FAA mandates the installation of aircraft rapid arresting system(ARAS) at the runway end safety areas which do not meet the FAA requirements. Even if the areas satisfy the conditions, FAA recommends the installation of ARAS to ensure the safety. In accordance of the international affairs, the domestic studies for ARAS are in progress and the legal formalities for domestic adoption of ARAS is under way. In this study, we analyzed the stopping distance, drag force, vertical force and tire penetration of runway overrun to assess the performance of ARAS reasonably by using two different kinds of analysis programs. The first is ARRESTOR program adopted by FAA, and the second is LS-DYNA which is available for 3-dimensional nonlineal dynamic analysis. As a result, analytically the stopping distances between two programs are similar. The drag force is rather different, but the tendencies are similar. Later on, the 3-dimensional simulation analysis considering various air-craft condition and properties of packaging materials is necessary. In addition, ongoing development of simulation analysis program is required for more accurate analistic results.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2007.12a
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• pp.37-39
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• 2007

고속 활주형선의 선형시험 ${\cdot}$ 검증을 위하여 설 해상모형시험기법을 정립하였으며, 본 시험법을 이용하여 선미 보조동체 장착 유무에 따른 고속 Stepped Hull 선형의 횡동요 및 저항특성을 비교, 분석하였다.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 1998.04a
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• pp.64-68
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• 1998

본 연구에서는 다양한 종류의 섬유를 일방향으로 배향시켜 제작한 복합재료의 트라이볼로지 연구를 수행하였으며 특히 섬유의 배향과 활주속도가 트라이볼로지 성질에 미치는 영향을 연구하였다. 실험에 쓰인 시편은 유리 섬유, 아라미드 섬유, 그리고 고탄성 탄소 섬유를 보강재료로 에폭시 수지를 모재로 사용한 일방향섬유 복합재료이며 각각의 시편을 스테인레스 강 상대 마찰면에 마찰시켜 마모량과 마찰 계수를 구하였다. 실험조건으로 사용한 여러 활주속도에서 탄소섬유복합재료가 모든 섬유배열방향에서 아라미드섬유복합재료와 유리섬유 복합재료보다 마모율과 마찰계수가 낮은 경향을 보였으며 특히 높은 속도에서는 탄소섬유복합재료의 특성이 뛰어남을 알 수 있었다.

• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.124-124
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• 2017

• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.125-125
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• 2017

• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.128-128
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• 2017

• 한국도로학회지:도로
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• v.5 no.2 s.16
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• pp.44-48
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• 2003

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.45 no.1
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• pp.46-53
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• 2017

This paper shows a length of wirecutter using an analysis based on Rotorcraft's control input and taxiing speed. In case of selecting an inappropriate length of wirecutter which applies to rotorcraft for safety, this causes a collision between blade and wirecuter, or an accident by wire. We review the control input which was used in development stage, and establish the conditions of control input which are needed in taxiing. Based on these conditions, we review the collision possibility between blade and wirecutter through analysis in case of 20, 40, 60 kts taxiing speed. Following, this result is verified by comparison with that of a simulation test in rotorcarft. Finally, in case of high collision possibility, we presented the downsize length to avoid the collision and increment of non-protective area in flight, simultaneously.