• Title, Summary, Keyword: Airfield

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Analysis on the Wartime Airlift Capability of Strategic Materials (전시 전략물자 항공수송 능력분석)

  • Lee, Myung-Wo;Lee, Sang-Jin
    • Journal of the military operations research society of Korea
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    • v.32 no.1
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    • pp.36-50
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    • 2006
  • It is required to transport a considerable amount of wartime strategic materials from US to Korea via airlift operation. This study attempts to formulate the wartime airlift operation model and evaluate the airlift capability of mobilized resources, including civil aircrafts. Although an airlift plan has been annually updated by the Korea Transportation Command, it is necessary to evaluate the feasibility through simulation due to uncertainties in the process of airlift operation. Uncertain parameters are as follows; the inter-arrival time of materials in the US airfields, loading and unloading times, the distribution of aircraft's initial location at the time of mobilization order. The simulation is executed under two scenarios and the results are analyzed through a sensitivity analysis. Simulation result shows that the irregularity of inter-arrival time and the number of mobilized civil aircrafts are the most critical factors in influencing airlift capability.

A Test Compacted Construction for Subgrade in the 3rd Runway of the 2th Incheon International Airport Construction Area using Crushed Stone (인천국제공항2단계 제3활주로 부지에서 파쇄암을 이용한 노상 시험다짐 시공)

  • Kim, Jong-Kuk;Son, Hyung-Ho;Kim, Young-Ung;Kim, Yong-Cheol;Kim, Dong-Chul;Kim, Yeon-Jung
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.507-514
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    • 2005
  • In this construction case study, Crushed stone under 100mm diameter was carried out a test compacted construction for subgrade in the 3rd. runway of the 2th Incheon International Airport Construction area. Conforming to specification needs a minimum rolling compacted number 10 for upper subgrade 100% compaction degree indicated in Federal Aviation Administration and $K_{30}{\geq}20kgf/cm^3$ in plate bearing test. $K_{30}$ to be acquired 100% compaction degree of upper subgrade is confirmed to about $31kgf/cm^3$ from correlation $K_{30}$ vs relative compaction degree.

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Noise Contour Map Designed from Validation Study of Model for Predicting Aircraft Noise (항공기 소음모델의 정합성 평가를 통한 소음지도 작성)

  • Yim, Bongbeen;Kim, Jooin;Lee, Kyusung;Hong, Hyunsu;Kim, Suntae
    • Journal of Environmental Impact Assessment
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    • v.21 no.6
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    • pp.893-901
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    • 2012
  • Aircraft noise model such as FAA Integrated Noise Model(INM) has recently been used for forecasting the impact of noise in a residential area near an airport and quantifying the effect of various options for noise mitigation. The noise modeling should be reliable and precise in order to ensure the quality of the results provided. In this study, the validation of the noise levels simulated by the INM against measurement data recorded continuously at multiple monitoring sites was discussed. As a result of validation, the quality of the input data used as a fixed point profiles for the INM was enhanced. The noise contour maps were designed as a way to evaluate the aircraft noise of the vicinity of the airfield. The results of this study indicate that the validation of aircraft noise model by the measurement data would be required for the accurate assessment of the aircraft noise levels.

Case Study of Geogrid Reinforcement in Runway of Inchon International Airport (지오그리드를 활용한 인천국제공항 활주로 보강사례)

  • 신은철;오영인;이규진
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.105-116
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    • 1999
  • The Inchon International Airport site was formed by reclaimed soil from the sea. The average thickness of soft soil Is about 5 m and most of soft soils are normally consolidated or slightly over consolidated. There are many box culverts which are being constructed under the runways in the airfield. Sometimes, differential settlement can be occurred in the adjacent of box culvert or underground structures at the top layer of runway Soil compaction at very near to the structure is not easy all the time. Thus, one layer of geogrid was placed at the bottom of lean concrete layer for the concrete paved runway and at the middle of cement stabilized sub-base course layer for the asphalt paved runway. The length of geogrid reinforcement is 5m from the end of box culvert for both sides. The extended length of geogrid was 2m from the end of backfill soil in the box culvert. The tensile strength tests of geogrid were conducted for make sure the chemical compatibility with cement treated sub-base material. The location of geogrid placement for the concrete paved runway was evaluated. The construction damage to the geogrid could be occurred. Because the cement treated sub-base layer or lean concrete was spread by the finisher. The magnitude of tensile strength reduction was 1.16%~1.90% due to the construction damage and the ultimate tensile strength is maintained with the specification required. Total area of geogrid placement in this project is about 50,000 $m^2$.

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A study on introduction and operation plan of air traffic services operating certification system: Centered on small airfields (항공교통업무증명제도 도입과 운영 방안에 대한 연구: 소규모 비행장을 중심으로)

  • Lim, Jae-Hwan;Kim, Young-Rok;Choi, Yun-Chul
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.25 no.4
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    • pp.154-160
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    • 2017
  • In the former aviation law, only the Ministry of Land, Infrastructure and Transport has to provide air traffic services, In the case of providing aviation transportation service from civilian, such as aviation special education institution, private airfield installer, it was possible to carry out only by receiving a private contract from the government. But at the time of private consignment, the fact that the government has to bear the cost through the contract act. It is pointed out that it is a factor that hinders efficiency in the operation sector. Accordingly, in Article 85 of the Aviation Safety Act, which was enforced in March 2017, legal grounds were established to provide air traffic services excluding the Ministry of Land, Infrastructure and Transport. At the same time, we have introduced the air traffic services operating certification system, which enables the air traffic services to meet the requirements set by the Ministry of Land, Infrastructure and Transport in order to secure the safety of air traffic. In this study, we examine the major issues and problems of the small private control tower operated by the private institute in Korea. The effect of introduction of the air traffic services operating certification system which can introduce all the institutions which do not belong to the control agency in the former aviation law into the institutional system and the operation plan were examined.

Automatic FOD Detection Test Using EO/ IR Laser Light Camera (EO / IR Laser Light 카메라를 이용한 FOD 자동탐지 시험)

  • Shin, Hyun-Sung;Hong, Gyo-Young;Hong, Jae-Beom;Choi, Young-Soo;Kim, Yun-Seob
    • The Journal of Advanced Navigation Technology
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    • v.21 no.6
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    • pp.638-642
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    • 2017
  • FOD is a generic term for substances with potential threats that can pose a fatal risk to aircraft. Therefore, FOD should be noted in all areas of the airport. Especially, the method of detecting and collecting FOD in runway and aircraft movements is very low efficiency and economical efficiency of airport operation, so it is essential to develop FOD automatic detection system suitable for domestic environment. As part of the aviation safety technology development project, the development of an automatic detection system for foreign matter in the moving area of the aircraft inside the airport is underway. In this paper, it is confirmed that EO / IR camera is used for detection of foreign objects at Taean Airfield of Hanseo University. EO camera is used during the day and IR camera is used at night.

Research about Designation of Restricted Area Dedicated for Remote Piloted Aircraft Flight Test (무인항공기 비행시험 전용 제한구역 설정에 관한 연구)

  • Kee, Yeho
    • Journal of Aerospace System Engineering
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    • v.9 no.2
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    • pp.25-33
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    • 2015
  • Global market of unmanned aircraft(UA) is rapidly expending based on the versatile and efficient utility of the UA. Domestically many industries, universities and research institutes are trying to do research and development of the UA in various angle of aspect. In spite of these effort, all the participants of research and development of the UA has been suffering the difficulty of acquiring the airspace around vicinity of Goheung airfield for the flight test of UA. Although the current procedure of execution of the flight test of UA is set after acquiring the airspace by applying the NOTAM(Notice To Air Man) to the Ministry of Land, Infrastructure and Transport(MLIT) at least 7 days before the flight test and commencing with the publication of the NOTAM by MLIT, if the flight test is carried out as planned, changing or reapplying the NOTAM expends mort time and makes difficulty often. Therefore it is needed that a restricted airspace for the flight test of UA is established and make all the executioner of flight test uses the exclusive airspace without limitation. This research proposes the restricted airspace with short term and long term establish requirement of airspace separately. The short term requirement has been established with the airspace of 10 nm radius and 8,000 ft altitude in which the requirements of flight test can be carried out more than 90% without needs of supplement of the additional airspace. The long term has been established within the airspace of 30 nm radius which is the maximum Radio Line Of Sight(RLOS) and 8,000 ft altitude with exclusion of current air way, airport control area, approaching corridor to the airport, existing restricted area(RA) and Military Operating Area(MOA) for the purpose of minimizing inconvenience of the other airspace user. Once establishing the exclusive airspace for the flight test of UA, research and development of industries, universities and research institutes will be more vigorous and contributes to the national economy.

A Efficient Strategy Option to Develop Public Heliport in the Metropolitan Area (수도권 공용 헬기장 발전 방안에 관한 연구)

  • Lee, Young-Jong
    • The Journal of Advanced Navigation Technology
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    • v.19 no.2
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    • pp.98-102
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    • 2015
  • In this paper are This paper is about the efficient use operational management plan for the metropolitan public Jamsil heliport. First, understand the general operations and facilities to Jamsil heliport and raised the issue for them. And, in cases such as urban offshore heliport Jamsil heliport in New York and Texas (USA), for example, which was presented for comparative analysis and Jamsil heliport in London (UK). Operations, research is seen against a facility to install and manage a couple of airfield operations based on the subject by presenting the alternatives, thereby causing the principal operating facilities, infrastructure and security facilities even suggest ways to enhance the standards. Unlike other countries, Jamsil heliport location characteristics were excluded from the study on the safety aspects related to flight operations and for this I'm a military airport facilities coexist in the neighborhood.

Comparison of ILS and GBAS Through Flight Test in Taean Aerodrome and Kimpo Airport (태안 비행장과 김포공항 비행시험을 통한 ILS와 GBAS 비교)

  • Koo, Bon-Soo;Kim, Woo-Ri-Ul;Ju, Yo-Han;Hong, Gyo-Young
    • The Journal of Advanced Navigation Technology
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    • v.19 no.3
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    • pp.192-198
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    • 2015
  • Since instrument landing system currently operating in most airports is operating in single-pass, it is not possible to accommodate a large number of aircraft. A satellite navigation system GBAS using a GNSS has been developed to solve these limitation when air traffic increases. GBAS is better than the ILS in position accuracy and capable of landing through multiple paths rather than a single path, the aircraft can perform varied landing procedures. In this paper, after we established a virtual ILS procedures at Taean Airfield in which ILS installation is impossible due to environmental requirements and airspace restrictions, flight test was performed by Cessna Skyhawk 172 to compare the virtual ILS procedures and curved approach procedure and the advantage of curved approach was confirmed.

Analysis of Runway Occupancy Time Using ADS-B Message about Landing Airplane (ADS-B를 이용한 착륙 항공기의 활주로 점유 시간 분석)

  • Ku, SungKwan;Baik, Hojong
    • The Journal of Advanced Navigation Technology
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    • v.20 no.3
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    • pp.167-174
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    • 2016
  • Runway and taxiway is base facilities for aircraft take off and landing and runway capacity is one of major factor for airport capacity. Runway occupancy time is affect on the runway capacity. The identification of aircraft using taxiway by analysis of airport ground surveillance data and the measurement of pass time on the points is general method for the confirmation of the runway occupancy time. This study is runway occupancy time analysis of landing airplane using ADS-B message, in this study we surveyed landing aircraft runway occupancy time and analysis of serviced record using taxiway include rapid exit taxiway. The result of analysis is to confirm the different of landing direction and aircraft category on the same runway caused by structure of airport. Also the result of runway occupancy time analyzed data, it is base input data for the air transportation simulation.