• 산업경영시스템학회지
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• 제46권3호
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• pp.148-160
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• 2023

The air transport industry is experiencing unprecedented fluctuations in aviation demand through the Covid-19 pandemic, and is more focused than ever on maintaining and generating business profitability. During the pandemic, demand for air cargo has soared, and the conversion business from passenger aircrafts to freighters(P2F) is drawing attention as a new business in the aviation maintenance industry. This study derives important factors to be considered in order to successfully carry out the P2F project through a wide range of cases and related literature, and analyzes the relative importance of each factor using the analytic hierarchy process. Through a survey of 33 aviation maintenance experts with more than 20 years of field experience, the importance of main factors and their sub factors was determined and implications were drawn. As a primary result, in order to succeed in the P2F project, the main factors were identified in the order of skill, finance, and location. The most important sub factors for each main factors were identified in order of securing airframe modification skill, securing infrastructure construction cost, and creating P2F business complex and district. The quantified success factors suggested the critical direction for the successful development of Korea's P2F business, and presented viable and specific business strategies and implementation plans for each factors.

• 한국항공운항학회지
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• 제32권1호
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• pp.79-90
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• 2024

UAM is emerging due to the deepening population concentration in the metropolitan area and the problem of congested ground transportation in urban areas. Accordingly, along with research on eVTOL aircraft for UAM services, interest in vertiport, the interest in vertiports, the infrastructure that allows eVTOLs to take off and land, is also increasing. However, behind the concentration of population in the metropolitan area, aphenomenon of local extinction is occurring in conjunction with the aging population. AAM, which moves quickly through 3D space, can be an effective SOC facility in times of local extinction crisis. In this paper, we introduce a design plan from the perspective of a complex transper center for a regional hub-level vertiport that can connect with local high-speed rail and utilize local airports in compliance with the vertiport design guidelines issued by FAA(Federal Aviation Administration) and EASA(European union Aviation Safety Agency). We would like to present Vertiport's future operation plan.

• 항공우주정책ㆍ법학회지
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• 제31권2호
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• pp.99-143
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• 2016

General aviation and air transport are two wings of the civil aviation industry. Chinese air transport is developing rapidly, and has become the world second air transport system only second to US since 2005. However, Chinese civil aviation is far behind the world average level, and cannot meet requirements of economic construction and social development. The transition and structural adjustment of Chinese economy provide the general aviation with a unprecedented broad market. The prospect of general aviation is promising and anticipated. The development of general aviation industry needs the legislative supports, and the current legislative conditions of Chinese general aviation are undoubtedly far behind the realistic requirements. Accelerating the legislation in Chinese general aviation industry requires scientific legislation concept. First, Legislation must promote development of general aviation industry. The general aviation will serves as a Chinese emerging industry that boosts domestic demand, promotes employment and expedite domestic economic development. We should, based on both the concept of promoting the industrial development of general aviation and national industrial planning, enact and rectify relative laws and regulations. And we should also straighten out the relationship between aviation security and industrial development and promote the revolution of low-altitude airspace management in an all-round way, in order to improve the utilization rate of airspace resources, classify and establish airspace, simplify examination and approval procedure and intensify operation management. In addition, what we should do is to expedite the infrastructure layout construction, guide the differentiated but coordinated development of general aviation industries in various areas, establish a united supervision mechanism of general aviation, redistrict the responsibilities of Chinese Air Control Agency and set up legislation, law enforcement and judicial systems with clarified institutions, clear positioning and classified responsibilities, so as to usher in a new era of the legislative management of Chinese general aviation industry. Second, shift the focus from regulations to both regulations and services. Considering the particularity of the general aviation, we should use American practices for reference and take into account both regulation and service functions when enacting general aviation laws. For example, we should reduce administrative licensing and market supervision, and adopt "criteria" and "approval" management systems for non-commercial and commercial aviation. Furthermore, pay attention to social benefits. Complete social rescuing mechanism through legislation. It should be clarified in legislation that general aviation operators should take the responsibilities of, and ensure to realize social benefits of environmental protection and ecological balance .Finally, rise in line with international standards. Modify Chinese regulations which is inconsistent with international ones to remove barriers to international cooperation. Specify basic legislative principles. One is the principle of coordination. Realize coordination between the civil aviation and general aviation, between military aviation and civil aviation, and among departments. Two is the principle of pertinence. The general aviation has its own rules and specialties, needing to be standardized using specialized laws and regulations. Three is the principle of efficiency. To realize time and space values of general aviation, we should complete rules in aerospace openness, general aviation airport construction, general aviation operations, and regulation enforcement. Four is the principle of security. Balance the maximum use of resources of Chinese airspace and the according potential threats to Chinese national interests and social security, and establish a complete insurance system which functions as security defense and indemnificatory measure. Establish a unified legal system. Currently, the system of Chinese general aviation laws consists of national legislation, administrative laws and regulations and civil aviation regulations (CAR). Some problems exist in three components of the system, including too general content, unclear guarantee measures, incomplete implementation details, and lacking corresponding pertinence and flexibility required by general aviation regulations, stringency of operation management and standards, and uniformity of standards. A law and regulation system, centered on laws and consisting of administrative laws regulations, industrial regulations, implementation details, industrial policies and local laws and regulations, should be established. It is suggested to modify the Civil Aviation Law to make general aviation laws complete, enact the Regulations of General Aviation Development, and accelerate the establishment, modification and abolition of Chinese general aviation laws to intensify the coordination and uniformity of regulations.

• 한국항공운항학회지
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• 제28권4호
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• pp.132-140
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• 2020

The development status was studied to predict the concept of how drone taxis would be presented in daily life. the results of the analysis on traffic effects of drone taxis showed that they would be an innovative transportation option that could reach a distance of 60km, which would typically take an hour by car, within twenty minutes. Moreover, the economic analysis of existing aircraft development was limited to production (development investment) of the input budget. However, since the drone taxi is a new transportation system, an overall traffic platform, such as its own terminals, would need to be established. So, the production inducement effect was analyzed by dividing input budget into three factors; production, infrastructure, and service. The results indicate this to be an innovative project expected to have an economic ripple effect and reach a total of 24 trillion won after an investment of 13 trillion won (production + infrastructure + service) in Korea from 2020 to 2040.

• 융합보안논문지
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• 제20권2호
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• pp.145-153
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• 2020

2018년부터 시행된 항공안전정책기본계획은 무결점 항공안전관리체계 구축과 미래 항공안전 인프라 구축을 목표로 4차 산업혁명 기술을 적용한 항공안전관리 기술 개발을 포함하고 있다. 인공지능과 빅데이터를 활용한 항공기 고장관리, 가상/증강현실 기술을 활용한 비행훈련체계 등 다양한 항공안전관리 체계를 구축하고자 한다. 현재 공군에서도 스마트한 공군력 건설이라는 목표 아래 신기술을 활용한 비행안전관리 체계 사업을 추진 중이다. 본 연구에서는 비행 전에 항공기의 최종 안전성을 점검하는 항공기 상태 점검체계를 4차 산업혁명기술을 적용하여 설계하고자 한다. 공군에서는 항공기 상태 점검으로 기골 결함 점검과 비행 전 항공기 종합점검을 실시한다. 본 연구에서는 최소한 점검 오류를 줄일 수 있는 무결점 점검을 위해서 인공지능, 사물인터넷, 빅데이터, 그리고 드론을 활용한 기골 결함 점검체계와 비행 전 항공기 상태 점검체계 설계를 제안한다.

• Advances in Computational Design
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• 제4권3호
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• pp.197-210
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• 2019

Motion generation of a four-bar linkage is a type of mechanism synthesis that has a wide range of applications such as a pick-and-place operation in manufacturing. In this research, the use of meta-heuristics for motion generation of a four-bar linkage is demonstrated. Three problems of motion generation were posed as a constrained optimization probably using the weighted sum technique to handle two types of tracking errors. A simple penalty function technique was used to deal with design constraints while three meta-heuristics including differential evolution (DE), self-adaptive differential evolution (JADE) and teaching learning based optimization (TLBO) were employed to solve the problems. Comparative results and the effect of the constraint handling technique are illustrated and discussed.

• 항공우주정책ㆍ법학회지
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• 제33권2호
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• pp.61-114
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• 2018

최근들어 '공역'은 뜨거운 이슈가 되었는데, 의외로 우리나라의 공역 법과 제도에 대해 전체적으로 설명된 자료는 없어, 민 군 공역 법제와 실무를 함께 정리하여 보았다. 우리나라의 항공법 분야는 적어도 법적인 측면에서는 민간항공기와 군용항공기 관련 법은 완전히 분리되어 있다. 국토부교통부장관은 "항공안전법"에서 부여된 각종 권한을 갖고 업무를 수행한다. 우리나라 항공관련 내용은 너무 많은 사항을 국토부 고시나 규정으로 규율하고 있고, 그 고시나 규정들도 상위 법규의 어떤 조항과 연결되는지 잘 알 수 없는 것들이 많다. 따라서, 현행 고시의 내용을 검토해서 가능한 법규명령으로 하도록 노력할 필요가 있고, 고시 내용도 위임된 사항에 한하여 구체적으로 명확하게 서술되도록 정비할 필요가 있다. 공역체계에 있어서는, 일반인이 이해하기에는 공역 분류체계가 너무 복잡하고, 법규와 실무의 괴리도 일부 있어 보인다. 따라서, 단순하면서도 실무현실에 부합하는 공역 분류 체계로 재정립해 보는 것은 어떤가 생각된다. 군에서 하는 공역이나 항공 관련 업무는 국토교통부장관으로부터 위탁받은 것과 군 고유의 권한을 명확히 구분해서 이해할 필요가 있다. 국토교통부 위탁사항과 관련해서는, 본래 국토교통부의 업무이기 때문에 관련 업무 지침 작성시 국토교통부와 긴밀히 협조해야 하고, 현재 국토교통부에서 국방부로 위탁한 것을 대부분 예하 비행단급까지 재위임하고 있는데 재위임 부대의 적정성을 한 번 고민해 볼 필요가 있고, 관련 지침의 작성 주체도 명확히 해 둘 필요가 있다. 군사작전활동으로서의 공역통제와 관련해서는, '노력의 통일'과 같은 공역통제에 관한 군사교리에 충실한 정책이나 지침이 필요하다.

• Smart Structures and Systems
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• 제15권3호
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• pp.593-608
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• 2015

In many of the industrialized countries an increasing amount of infrastructure is ageing. This has become specifically critical to bridges which are a major asset with respect to keeping an economy alive. Life of this infrastructure is scattering but often little quantifiable information is known with respect to its damage condition. This article describes how a damage tolerance approach used in aviation today may even be applied to civil infrastructure in the sense that operational life can be applied in the context of modern life cycle management. This can be applied for steel structures as a complete process where much of the damage accumulation behavior is known and may even be adopted to concrete structures in principle, where much of the missing knowledge in damage accumulation has to be substituted by enhanced inspection. This enhanced and continuous inspection can be achieved through robotic systems in a first approach as well as built in sensors in the sense of structural health monitoring (SHM).

• 항공우주의학회지
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• 제30권3호
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• pp.83-85
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• 2020

In commemoration of Vol. 30, Issue 3, our journal prepared five review articles and one original paper. The global outbreak of COVID-19 in 2020 has impacted our society, and especially the aviation and travel industries have been severely damaged. Kwon presented the aviation medical examination regulations related to COVID-19 announced by the Ministry of Land, Infrastructure, and Transport of the Republic of Korea. Lim summarized various efforts of airlines to overcome the crisis in the aviation industry. He also discussed the management of these aircraft as the number of airplanes landing for long periods increased. Finally, he suggested various quarantine guidelines at airports and onboard aircraft. COVID-19 has had a profound impact on mental health as well as physical effects. Kim investigated the impact of COVID-19 on mental health and suggested ways to manage the stress caused by it. The Internet of Things (IoT) refers to a technology in which devices communicate with each other through wired or wireless communication. Hyun explained the current state of the technology of the IoT and how it could be used, especially in the aviation field. In the area of airline service, various situations arise between passengers and crew. Therefore, role-playing is useful in performing education to prepare and respond to passengers' different needs appropriately. Ra introduced the conceptual background and general concepts of role-playing and presented the actual role-play's preparation process, implementation, evaluation, and feedback process. For a fighter to fly for a long time and perform a rapid air attack, air refueling is essential, which serves refueling from the air rather than from the aircraft base. Koo developed a questionnaire based on the HFACS (Human Factors Analysis and Classification System) model and used it to conduct a fighter pilot survey and analyze the results.

• 항공우주정책ㆍ법학회지
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• 제33권2호
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• pp.3-34
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• 2018

우리나라 항공운송산업은 1948년 10월에 대한국민항공사(KNA) 설립된 이후, 올해로 민항 70년의 역사를 이어 왔다. 현재 우리나라는 9개의 국제항공운송사업 면허를 보유한 항공사가 활발하게 사업을 영위하고 있으며, 2017년 기준으로 우리나라는 항공운송 수송실적(국내+국제)이 세계 8위를 차지할 정도로 세계 항공업계에서 그 위상을 확고히 하고 있다. 본고는 현재 우리나라 항공운송산업에 대한 분석을 통해 국내 항공운송산업의 내재적 문제점과 그에 대한 정책적 내지 법적으로 보완할 사항이 무엇인지에 대해 살펴보고, 향후 우리나라가 글로벌 항공 강국으로 지속 발전할 수 있는 '항공정책 방향'을 제시하는데 그 목적이 있다. 항공관련 통계자료를 분석해보면, 우리나라 항공운송산업은 매우 높은 성장률을 보이고 있으며, 국적항공사들도 지속성장을 위한 투자를 계속하고 있다. 나아가 새로운 기업들도 시장진입을 위해 노력하고 있다. 2018년 11월 현재 4개 기업이 국제항공운송사업 면허를 신청하였고, 1개 기업이 (화물)국제항공운송사업 면허를 신청한 상태이며 국토교통부는 2019년 1분기까지 면허발급 여부를 결정할 것으로 예상된다. 이러한 상황에 대해 일부에서는 경쟁촉진을 통한 가격인하와 소비자 편익 향상을 기대하고 있으나, 반대편에서는 경쟁심화로 인한 항공사의 재무구조 악화와 안전투자 소홀을 우려하기도 한다. 현재 상황에서 우리나라 항공운송산업의 문제점을 정리하면 첫째, 저비용항공사들이 내국인 수요 유치에 집중하는 반면 외국인 수요 유치에 대한 노력이 부족하여 장기적이고 지속적인 성장의 기반이 취약하며, 둘째, 최근 몇 년간의 고도성장에 따라 조종사, 정비사와 같은 항공 전문인력의 부족과 주요공항의 슬롯이 포화상태에 이르러 지속성장의 장애가 되고 있으며, 셋째, 항공사들의 재무건전성이 체계적이고 지속적으로 관리되지 않아서 급작스런 지정학적 리스크나 글로벌 경기 침체시에는 항공사들의 재무상태가 일시에 급격이 나빠지고, 그 피해는 고스란히 소비자들에게 귀결될 위험이 있다. 국적항공사들이 지속 발전하기 위해서는 첫째, 성장기반을 세계 항공시장의 무한한 수요에 초점을 맞추고 국제경쟁력을 갖추어 나가고, 둘째, 정부에서 항공 인프라를 항공운송산업 규모에 맞게 지원하여야 하며, 셋째, 우리나라 항공운송산업의 미래를 이끌어 나갈 항공 전문인력을 체계적으로 양성하고, 넷째, 정부는 상시적으로 항공사들의 재무상태를 관리하여 소비자의 피해를 미연에 방지해야 할 것이다. 현재 항공운송산업은 극심한 경쟁이 일상화 되어 있다. 국적항공사의 지속가능한 발전을 위해서는 항공사들이 모두 치열하게 노력해야 할 뿐만 아니라, 정부의 모든 기관들도 우리 항공사들이 국제경쟁에서 이길 수 있도록 정책적으로 뒷받침 해나가야 할 것이다.