Noise is a sound that humans do not want. In this study, noise is measured for C172, the most frequently used general aviation trainer in Korea and abroad. In addition, in this study, noise measurement points are selected for Muan Airport, where most of the domestic training aircraft fly under the supervision of the Ministry of Land, Infrastructure and Transport. Based on this, the measured data is scaled and analyzed. In addition, we intend to analyze what characteristics C172 aircraft have unique through frequency analysis of noise of C172. Through this, it is intended to understand what type of noise training aircraft affect in future studies.

본 연구는 중국의 11개 4F급 공항을 대상으로 변이할당분석을 통해 공항의 경쟁 력을 비교한다. 분석기간은 2001년-2021년으로 설정하고 2001년-2007년, 2008년-201 8년 그리고 2019년-2021년 세 구간을 설정하고 있다. 변이효과를 권역별로 보면 화 북지역의 공항 경쟁력은 감소하고 있으며, 화동지역, 화남지역과 화중지역의 공항 경 쟁력은 모두 상승하고 있다. 반대로 서북지역과 서남지역은 공항 경쟁력이 감소하고 있다. 할당효과를 보면 북경수도국제공항과 상해포동국제공항, 광주백운국제공항, 그 리고 심천보안국제공항의 할당효과가 가장 크다. 그리고 권역별로 절대적 성장치와 할당효과의 분석결과를 종합해 보면 화동지역, 화남지역 그리고 화중지역의 공항 경 쟁력이 상대적으로 높으며, 화북지역과 서북지역 그리고 서남지역의 공항 경쟁력은 상대적으로 낮다고 해석할 수 있다.

PURPOSES : In this study, a method to use magnesium phosphate ceramic (MPC) concrete for the surface maintenance of airport pavements with jointed concrete is developed. METHODS : To investigate the application of a material incorporated with MPC for the surface maintenance of airport pavements with jointed concrete, structures with various cross-sections and thicknesses were constructed. The cross-section of the structure was modeled for the surface maintenance of four types of pavements and typical pavement construction processes, such as cutting, cleaning, production and casting, finishing, hardening, and joint reinstallation. Subsequently, the hours required for each process was determined. RESULTS : The MPC concrete used for the surface maintenance of airport pavements with jointed concrete demonstrate excellent performance. The MPC concrete indicates a compressive strength exceeding 25 MPa for 2 h, and its hydration heat is 52.9 ℃~61.2 ℃. Meanwhile, the crushing and cleaning performed during the production and casting of the MPC require a significant amount of time. Specifically, for a partial repair process, a total of 6 h is sufficient under traffic control, although this duration is inadequate for a complete repair process. CONCLUSIONS : MPC concrete is advantageous for the surface maintenance of airport pavements with jointed concrete. In fact, MPC concrete can be sufficiently constructed using existing concrete maintenance equipment, and partial repair works spanning a cross-sectional area of 11 m2 can be completed in 1 d. In addition, if the crushing and cleaning are performed separately from production and construction, then repair work using MPC concrete can be performed at a larger scale.

PURPOSES : In this study, drone highway route alternatives were evaluated using the analytic hierarchy process (AHP) technique to investigate any difficulties or improvements while designing drone highway routes. METHODS : Based on the literature review and AHP analysis, 39 road and airport experts were surveyed to evaluate two alternate drone highway routes that connect the Seoul train station and Jamsil park near Gangnam business district. RESULTS : The AHP analysis results revealed that the environmental aspect was the most critical factor in designing a drone highway route, followed by social and technological factors. Among the investigated factors, noise and life-environment showed the highest geometric mean value of 0.21. This mean should be considered when developing plans and policies for drone highway design. CONCLUSIONS : Environmental and social agreement is more crucial than the technological and economic aspects when designing drone highway routes. Laws and policies should be updated and followed to support the drone highway system, which is vital in logistics.

이 연구는 한국, 중국, 일본의 국제항공 네트워크의 구조적 차이를 파악하기 위해 각 국의 주요 공항 및 국적 항공사 네트워크를 대상으로 비교분석을 실시하였다. 공항과 항공사 네트워크의 연결성을 파악하기 위해 연결·매개·근접 중심성, 네트워크 밀도, 동류성(Assortativity) 등 네트워크 분석의 다양한 지표들이 활용되었다. 주요 분석 결과는 다음과 같다. 먼저 아시아 공항들을 대상으로 국제노선 네트워크의 중심성 순위 분석 결과, 인천공항은 연결, 매개, 근접 중심성 측면에서 아시아 최상위권에 위치하였 다. 이와 더불어, 동북아와 중국 간 국제노선 네트워크가 조밀해짐에 따라 양 지역의 2차 허브공항들을 중심으로 3개 중심성 순위가 2015년 대비 급속하게 상승하였다는 점을 발견하였다. 다음으로 한국, 중국, 일본의 주요 공항 간 국제항공 네트워크 비교 결과, 우리나라는 인천 중심의 단일 허브 네트워크가 발달함에 따라 인천과 나머지 국제공항 간 중심성 격차가 복수의 허브를 운용하는 중국과 일본에 비해 매우 크게 나타나고 있었다. 다만, 국적 LCCs(Low Cost Carriers)의 경우 지역공항을 2차적 거점으로 활용함에 따라 인천공항에 대한 국제노선 집중도가 FSCs(Full Service Carriers)에 비해 상대적으로 낮게 나타났다. 본 연구를 통해 국가공항체계의 불균형을 완화하고, 지방 거주민들의 국제선 접근성 및 이용 편의성을 향상시키기 위한 전략으로 LCCs를 통한 지방국제공항들의 국제 연결성 강화 전략이 지속적으로 추진될 필요가 있다는 점을 확인하였다.

This work in progress aims to shed light on the influence of airports’ sensory environment on the destination image formation, by underlining the need for differentiation in the global market. A two-study approach is proposed with observation and questionnaires, investigating both the internal and external environment of four airports.

PURPOSES : Almost every design method for airport concrete pavements considers only traffic loading and not environmental loading. This study proposes a mechanistic design method for airport concrete pavements, that considers both environmental and traffic loading simultaneously. METHODS: First, the environmental loading of concrete pavements in Korean airports was quantified. FEAFAA, a finite element analysis program for airport pavements, was used to calculate the maximum tensile stress (MTS) of the slab, caused by both environmental and traffic loadings. The factors that influence the MTS were identified via sensitivity analysis, and an MTS prediction model was developed using the statistical analysis program SPSS. The ratio of MTS to the tensile strength of slab was calculated using the prediction model. The fatigue model under the AC 150/5320-6E and AC 150/5320-6F standards of the FAA was corrected to make it suitable for the predicted stress-strength ratio. RESULTS : The MTS prediction model and corrected fatigue model were used to redesign the slab thickness and joint spacing of airport concrete pavements originally designed using the AC 150/5320-6D standard, which empirically considers traffic loading only. As a result, different slab thicknesses and joint spacings were redesigned with consideration for environmental loading, specifically the weather conditions of airports. . CONCLUSIONS: The slab thickness and joint spacing can be mechanistically designed at the same time, whereas previously, only the slab thickness was designed, and the joint spacing was determined empirically.

여행객 휴대 수입금지식물에서 발생하는 금지해충(과실파리류, 코드린 나방 등)의 유입 가능성이 높아짐에 따라 지속적인 모니터링을 통하여 품목별, 국가별로 검출되는 해충의 정보 축적이 필요하며, 검역해충 종 동정을 위하여 표본 확보 및 분류학적 정보가 필요하다. 2018년 1월부터 12월까지 인천공항 및 인천항으로 반입되어 압수한 휴대식물 중 사과, 배, 복숭아에서 검출되는 해충을 조사하였다. 그 결과 형태학적 동정 및 DNA 바코딩 분석을 통하여 Carposina sasakii (복숭아심식나방), Grapholta molesta (복숭아순나방), Grapholita dimorpha (복숭아순나방붙이) 등이 검출되었지만 우려하는 코드린나방은 검출되지 않았다. 본 연구결과는 휴대 반입식물에서 검출되는 해충 종 구성에 대한 검역자료로 활용될 수 있을 것으로 판단된다.