• Title/Summary/Keyword: 항공협력

Search Result 197, Processing Time 0.029 seconds

Prospect and Direction on Korean Ground System Development (우리나라 지상시스템의 발전 전망 및 방향)

  • Chung, Daewon
    • Journal of the Korean Society for Aeronautical & Space Sciences
    • /
    • v.44 no.8
    • /
    • pp.718-727
    • /
    • 2016
  • Korean ground systems have started to be developed for mission control and payload data processing since 1990s. International technology cooperations were needed in the early development phase of ground system for science experiment satellite, LEO satellite and GEO satellite and then they have been developed as domestic own technology since acquiring early technology. Our country has developed total 14 ground systems until now, this paper suggests prospect and direction on ground system development in the base of such development experiences. Mission control system is needed to develop multi-satellite mission control system in the base of technology of re-configure, re-use and automation. Processing system is needed to acquire processing technology for kinds of payload sensor data and study inter-operation to integrate and use outputs which are processed between users. Finally, national ground system infrastructure is needed to operate kinds of lots of satellites at worldwide area.

Leader - Follower based Formation Guidance Law and Autonomous Formation Flight Test of Multiple MAVs (편대 유도 법칙 및 초소형 비행체의 자동 편대 비행 구현)

  • You, Dong-Il;Shim, Hyun-Chul
    • Journal of the Korean Society for Aeronautical & Space Sciences
    • /
    • v.39 no.2
    • /
    • pp.121-127
    • /
    • 2011
  • This paper presents an autonomous formation flight algorithm for micro aerial vehicles (MAVs) and its flight test results. Since MAVs have severe limits on the payload and flight time, formation of MAVs can help alleviate the mission load of each MAV by sharing the tasks or coverage areas. The proposed formation guidance law is designed using nonlinear dynamic inversion method based on 'Leader-Follower' formation geometric relationship. The sensing of other vehicles in a formation is achieved by sharing the vehicles' states using a high-speed radio data link. the designed formation law was simulated with flight data of MAV to verify its robustness against sensor noises. A series of test flights were performed to validate the proposed formation guidance law. The test result shows that the proposed formation flight algorithm with inter-communication is feasible and yields satisfactory results.

A Comparative Study on Preference of the Korean Army's Flight Jacket According to Working Environment (근무 환경에 따른 육군 비행재킷의 선호도 비교 연구)

  • Choi, Hee Eun;Choi, Kueng-mi
    • Fashion & Textile Research Journal
    • /
    • v.22 no.6
    • /
    • pp.844-852
    • /
    • 2020
  • This study is to understand the preferences of pilots, flight engineers and crew who work in the same aircraft but are exposed to different working environments and perform different mission operations in order to develop an ergonomic flight jacket. Based on a preliminary investigation, a survey of 107 pilots and 36 flight engineers and crew was conducted. The results are as follows; Pilots can control the temperature inside the cockpit, so they are less exposed to the cold when working, while flight engineers and crew are exposed to the cold more because they have many external tasks. The reason for the problem of the current flight jacket was a difference in ranking between two groups, but the highest ranking was poor dimensional suitability due to the habit of wearing layers of clothing. As a result of preferred design, there were significant differences between groups in the item of overall style. Pilots preferred a bomber jacket style(P:68.2%, E&C:44.4%), on the other hand, flight engineers and crew preferred a field jacket style(P:26.2%, E&C:55.6%)(p<.01). They preferred a stand collar(P:71.0%, E&C:86.1%), a fastener slider for a front fastening(P:62.6%, E&C:61.1%), fastener tape cuffs(P:54.2%, E&C:47.2%), a jacket with a softshell(P:86.9%, E&C:83.3%), fleece as softshell material(P:88.8%, E&C:69.4%), and fastener sliders as a attaching method(P:69.2%, E&C:61.1%). A hem fastening will be selected differently according to the overall style of outshell. Additionally, they preferred more than 5ea pockets(P:51.4%, E&C:44.4%), fastener sliders as pocket's fastenings(P:48.6%, E&C:61.1%), armpit ventilations(P:62.9%, E&C:58.5%). The results of above will be considered to design an ergonomic flight jacket.

Informetric Analysis of Regional Studies: Focused on Incheon Area (지역 연구에 대한 계량정보적 분석 - 인천 지역을 중심으로 -)

  • Cho, Jane
    • Journal of the Korean Society for Library and Information Science
    • /
    • v.55 no.1
    • /
    • pp.323-341
    • /
    • 2021
  • Various research are being published in the areas of humanities, history, aviation/ports, and regional development, centering on the Incheon area which has issues such as large-scale ports and airports, archipelago, and urban regeneration. This study explored the scope of the subject and the distribution of researchers using a informetric analysis focusing on the studies of Incheon. Specifically, this study extracted authors from about 500 Incheon-related research papers listed in the Korean journal's citation index and analyzed the co-author relationship network to understand the cooperative behavior between authors' institutions. In addition, by extracting keywords from the articles and performing a weighted network (PFNET) analysis on the relationship between keywords, the intellectual structure was analyzed. As a result, it was found that Inha University and Incheon National University showed a high TBC, and Incheon Development Institute showed the high NNC. Meanwhile, the intellectual structure of Incheon-related research was found to be composed of 11 thematic clusters, and the social issues of Incheon, ports, and aviation were analyzed as representative clusters.

Experimental Study on Mode-I Energy Release Rate of Polypropylene Adhesive Layer Manufactured by Microwave Composite Forming Process (마이크로파 복합재 성형 공정을 이용한 폴리프로필렌 접착층의 모드 I 에너지 해방률에 대한 실험적 연구)

  • Park, E.T.;Kim, T.J.;Kim, J.;Kang, B.S.;Song, W.J.
    • Transactions of Materials Processing
    • /
    • v.31 no.1
    • /
    • pp.29-38
    • /
    • 2022
  • Recently, the composite material market is gradually growing. Various composite forming processes have been developed in order to reduce the production cost of the composite material. Unlike the conventional forming process, the microwave composite forming process has the advantage of reducing the processing time because the composite material is heated directly or indirectly at the same time. Due to this advantage, in this study, a double cantilever beam test was conducted with specimens manufactured by the microwave composite forming process. The purpose of this study was to compare mode-I energy release rate for specimens manufactured by prepreg compression forming and microwave composite forming processes. First, a microwave oven was proposed to conduct the microwave composite forming process. Double cantilever beam specimens were manufactured. After that, the double cantilever beam test was conducted to obtain the mode-I energy release rate. Mode-I energy release rates of specimens manufactured by the microwave composite forming and prepreg compression forming processes were then compared. As a result, mode-I energy release rates of specimens fabricated by the microwave composite forming process were similar to those fabricated with the prepreg compression forming process with a relatively reduced process time.

Liability of the Compensation for Damage Caused by the International Passenger's Carrier by Air in Montreal Convention (몬트리올조약에 있어 국제항공여객운송인의 손해배상책임)

  • Kim, Doo-Hwan
    • The Korean Journal of Air & Space Law and Policy
    • /
    • v.18
    • /
    • pp.9-39
    • /
    • 2003
  • The rule of the Warsaw Convention of 1929 are well known and still being all over the world. The Warsaw Convention is undoubtedly the most widely accepted private international air law treaty with some 140 countries. In the international legal system for air transportation, the Warsaw Convention has played a major role for more than half century, and has been revised many times in consideration of the rapid developments of air high technology, changes of social and economic circumstances, need for the protection of passengers. Some amendments became effective, but others are still not effective. As a result, the whole international legal system for air transportation is at past so complicated and tangled. However, the 'Warsaw system' consists of the Warsaw Convention of 1929 the Guadalajara Convention of 1961, a supplementary convention, and the following six protocols: (1) the Hague Protocol of 1955, (2) the Guatemala Protocol of 1971, (3) the Montreal Additional Protocols, No.1, (4) the Montreal Additional Protocol No.2, (5) the Montreal Additional Protocol No.3, and (6) the Montreal Additional Protocol No.4. of 1975. As a fundamental principle of the air carrier's liability in the international convention and protocols, for instance in the Warsaw Convention and the Hague Protocol, the principle of limited liability and a presumed fault system has been adopted. Subsequently, the Montreal Inter-carrier Agreement of 1966, the Guatemala City Protocol, the Montreal Additional Protocol No.3, and the Montreal Additional Protocol No. 4 of 1975 maintained the limited liability, but substituted the presumed liability system by an absolute liability, that is, strict liability system. The Warsaw System, which sets relatively low compensation limits for victims of aircraft accidents and regulates the limited liability for death and injury of air passengers, had become increasingly outdated. Japanese Airlines and Inter-carrier Agreement of International Air Transport Association in 1995 has been adopted the unlimited liability of air carrier in international flight. The IATA Inter-Carrier Agreement, in which airlines in international air transportation agree to waive the limit of damages, was long and hard in coming, but it was remarkable achievement given the political and economic realities of the world. IATA deserves enormous credit for bringing it about. The Warsaw System is controversial and questionable. In order to find rational solution to disputes between nations which adopted differing liability systems in international air transportation, we need to reform the liability of air carriers the 'Warsaw system' and fundamentally, to unify the liability system among the nations. The International Civil Aviation Organization(ICAO) will therefore reinforce its efforts to further promote a legal environment that adequately reflects the public interest and the needs of the parties involved. The ICAO Study Group met in April, 1998, together with the Drafting Committee. The time between the "Special Group on the Modernization and Consolidation of the 'Warsaw system'(SGMW)" and the Diplomatic Conference must be actively utilized to arrange for profound studies of the outstanding issues and for wide international consultations with a view to narrowing the scope of differences and preparing for a global international consensus. From 11 to 28 May 1999 the ICAO Headquarters at Montreal hosted a Diplomatic Conference convened to consider, with a view to adoption, a draft Convention intended to modernize and to integrate replace the instruments of the Warsaw system. The Council of ICAO convened this Conference under the Procedure for the Adoption of International Conventions. Some 525 participants from 121 Contracting States of ICAO attended, one non-contracting State, 11 observer delegations from international organizations, a total of 544 registered participants took part in the historic three-week conference which began on 10 May. The Conference was a success since it adopted a new Convention for the Unification of Certain Rules for International Carriage by Air. The 1999 Montreal Convention, created and signed by representatives of 52 countries at an international conference convened by ICAO at Montreal on May 28, 1999, came into effect on November 4, 2003. Representatives of 30 countries have now formally ratified the Convention under their respective national procedures and ratification of the United States, which was the 30th country to ratify, took place on September 5, 2003. Under Article 53.6 of the Montreal Convention, it enters into force on the 60th day following the deposit of the 30th instrument of ratification or acceptation. The United States' ratification was deposited with ICAO on September 5, 2003. The ICAO have succeeded in modernizing and consolidating a 70-year old system of international instruments of private international law into one legal instrument that will provide, for years to come, an adequate level of compensation for those involved in international aircraft accidents. An international diplomatic conference on air law by ICAO of 1999 succeeded in adopting a new regime for air carrier liability, replacing the Warsaw Convention and five other related legal instruments with a single convention that provided for unlimited liability in relation to passengers. Victims of international air accidents and their families will be better protected and compensated under the new Montreal Convention, which modernizes and consolidates a seventy-five year old system of international instruments of private international law into one legal instrument. A major feature of the new legal instrument is the concept of unlimited liability. Whereas the Warsaw Convention set a limit of 125,000 Gold Francs (approximately US$ 8,300) in case of death or injury to passengers, the Montreal Convention introduces a two-tier system. The first tier includes strict liability up to l00,000 Special Drawing Rights (SDR: approximately US$ 135,000), irrespective of a carrier's fault. The second tier is based on presumption of fault of a carrier and has no limit of liability. The 1999 Montreal Convention also includes the following main elements; 1. In cases of aircraft accidents, air carriers are called upon to provide advance payments, without delay, to assist entitled persons in meeting immediate economic needs; the amount of this initial payment will be subject to national law and will be deductable from the final settlement; 2. Air carriers must submit proof of insurance, thereby ensuring the availability of financial resources in cases of automatic payments or litigation; 3. The legal action for damages resulting from the death or injury of a passenger may be filed in the country where, at the time of the accident, the passenger had his or her principal and permanent residence, subject to certain conditions. The new Montreal Convention of 1999 included the 5th jurisdiction - the place of residence of the claimant. The acceptance of the 5th jurisdiction is a diplomatic victory for the US and it can be realistically expected that claimants' lawyers will use every opportunity to file the claim in the US jurisdiction - it brings advantages in the liberal system of discovery, much wider scope of compensable non-economic damages than anywhere else in the world and the jury system prone to very generous awards. 4. The facilitation in the recovery of damages without the need for lengthy litigation, and simplification and modernization of documentation related to passengers. In developing this new Montreal Convention, we were able to reach a delicate balance between the needs and interests of all partners in international civil aviation, States, the travelling public, air carriers and the transport industry. Unlike the Warsaw Convention, the threshold of l00,000 SDR specified by the Montreal Convention, as well as remaining liability limits in relation to air passengers and delay, are subject to periodic review and may be revised once every five years. The primary aim of unification of private law as well as the new Montreal Convention is not only to remove or to minimize the conflict of laws but also to avoid conflict of jurisdictions. In order to find a rational solution to disputes between nations which have adopted differing liability systems in international air transport, we need fundamentally to reform their countries's domestic air law based on the new Montreal Convention. It is a desirable and necessary for us to ratify rapidly the new Montreal Convention by the contracting states of lCAO including the Republic of Korea. According to the Korean and Japanese ideas, airlines should not only pay compensation to passengers immediately after the accident, but also the so-called 'condolence' money to the next of kin. Condolence money is a gift to help a dead person's spirit in the hereafter : it is given on account of the grief and sorrow suffered by the next of kin, and it has risen considerably over the years. The total amount of the Korean and Japanese claims in the case of death is calculated on the basis of the loss of earned income, funeral expenses and material demage (baggage etc.), plus condolence money. The economic and social change will be occurred continuously after conclusion of the new Montreal Convention. In addition, the real value of life and human right will be enhanced substantially. The amount of compensation for damage caused by aircraft accident has increased in dollar amount as well as in volume. All air carrier's liability should extend to loss of expectation of leisure activities, as well as to damage to property, and mental and physical injuries. When victims are not satisfied with the amount of the compensation for damage caused by aircraft accident for which an airline corporation is liable under the current liability system. I also would like to propose my opinion that it is reasonable and necessary for us to interpret broadly the meaning of the bodily injury on Article 17 of the new Montreal Convention so as to be included the mental injury and condolence. Furthermore, Korea and Japan has not existed the Air Transport Act regulated the civil liability of air carrier such as Air Transport Act (Luftverkehrsgestz) in Germany. It is necessary for us to enact "the Korean Air Transport Contract Act (provisional title)" in order to regulate the civil liability of air carrier including the protection of the victims and injured persons caused by aircraft accident.

  • PDF

위성정보 활용 현황 및 발전 전망

  • Yeom, Jong-Min;Kim, Yun-Su;Yun, Bo-Yeol;Cheon, Yong-Sik;Kim, Hak-Jeong
    • The Magazine of the IEIE
    • /
    • v.37 no.12
    • /
    • pp.144-153
    • /
    • 2010
  • 지금은 국내외 위성 영상자료의 증가가 예상되고 위성 정보 활용 관련 산업 및 시장에 대한 전망은 충분히 발전 가능성이 있다고 예측되고 있어, 이에 대한 대응 방안을 마련해야할 시점이다. 특히 이전의 단순 영상 제공에서 가공, 처리를 통한 부가 서비스에 대한 부분이 중요시 될 것으로 사료된다. 앞으로 우리가 나아가야 할 길은 국내 위성 정보 활용 시장 확대 및 국제적인 경쟁력을 갖추는 것이다. 이를 위해서는 무엇보다 위성정보 활용 범국가 활용체계 구축이 시급하며, 국가 컨트롤 타워를 통하여 위성정보 활용 중장기 계획을 수렴하여 체계적인 계획 실천이 필요하다. 또한 표준화된 위성정보 자료처리 및 배포 시스템 구축, 그리고 위성정보 활용의 활성화를 위한 인프라 구축에 많은 관심을 두어야한다. 하지만 무엇보다 세계 위성영상 상용화 시장에 경쟁력을 가지기 위해서는 핵심 및 융복합 활용 기술 개발, 국내 전문 인력/전문기업 양성 및 국제적 협력 강화가 중요하다. 최근 국내 위성개발 위상 강화로 인하여, IC 가입이 추진되고 있으며 이사회 회의를 통하여 회원기관으로 한국항공우주연구원이 동의를 받은 상태이다. 이는 대한한국 위성정보의 활용이 경제적인 측면에서 뿐만 아니라, 범지구적 문제해결에 이바지 할 수 있는 위성정보 공여국의 위치로 진입하였다는 점을 암시하는 것이라 할 수 있다.

  • PDF

Development of the Interpretation Key for Land-Cover Mapping of North Korea using KOMPSAT EOC Imagery (KOMPSAT EOC 영상을 이용한 북한 토지피복 판독 기법 개발)

  • 김정현;김두라;이규성;민숙주;김계현
    • Proceedings of the KSRS Conference
    • /
    • 2001.03a
    • /
    • pp.133-138
    • /
    • 2001
  • 최근 문화 및 통일협력 교류등으로 인하여 북한에 대한 사회적인 관심이 날로 증가하고 있 는데 반하여 북한의 폐쇄성으로 인한 북한에 대한 정보는 매우 미비한 실정이다. 이러한 시 점에서 북산지역에 관한 토지이용도나 토지피복도는 북한의 실정을 이해하는데 매우 유용하 게 사용될 수 있으며 기본적인 기반자료로서의 역할을 할 수 있다. 토지 이용구분은 토지의 물리적 특성보다는 인간의 이용목적에 기반을 둔 분류체계로서 확실한 특정 토지 이용 정보 를 획득하기 위해서 현지조사나 항공사진판독 등에 주로 의존한다. 하지만 현재 북한의 경 우는 접근이 불가능하므로 토지 이용도의 제작이 불가능한 실정이며, 따라서 토지이용도 보 다는 토지피복도의 제작이 보다 현실적 접근이라 할 수 있다. 본 연구에서는 KOMPSAT EOC 영상에 나타난 북한의 토지피복 특성을 파악하고 EOC 영상으로 판독 가능한 북한 토 지피복의 판독 특성의 기준을 제시하는 것을 목적으로 한다. Landsat TM 영상과 SPOT 영 상, 북한의 1:50000 지형도를 참고자료로 하여 EOC 영상을 육안 판독한 결과 다락밭, 비탈 밭 등과 같은 남한에서는 볼 수 없는 다른 피복들이 존재하였다. 이와 같은 피복을 포함한 북한의 자연환경과 지형구조 등을 고려한 북한의 각 토지 피복의 판독특성을 정의하고 북한 에 적합한 토지피복 분류체계를 수립하였다.

  • PDF

Risk Management for R&D Projects in the Military Aircraft Systems (군용항공기 연구개발 사업의 리스크 관리)

  • Kim, Sung Hun;Lee, Hyun Cheol
    • Journal of Korean Society of Industrial and Systems Engineering
    • /
    • v.44 no.4
    • /
    • pp.76-84
    • /
    • 2021
  • Military aircraft R&D projects require large-scale investment in cost and time, and involve a complex coordination process in decision-making. The R&D project manager should determine the development management priorities as accurately as possible and focus on R&D capabilities, thereby reducing the risks of the aircraft R&D project. To this end, this study aims to reduce R&D risk by prioritizing cost, schedule, and performance, which are basic management factors used in R&D project management in defense project management regulations. Analytic Hierarchy Process (AHP) is applied using a questionnaire for managers in charge of aviation R&D under the Defense Acquisition Program Administration. As a primary result, the importance of the factors that the aircraft R&D project manager should consider was derived in the order of performance, cost, and schedule, and the priorities of performance and cost in the lower layer were also identified. In addition, in order to provide practical risk management measures to aircraft R&D project managers, the results of analyzing 28 cases of US National Transportation Safety Board accidents were compared and analyzed with the AHP analysis results, and management measures suitable for the situation were specified.

Modeling Domestic News Topics for Mongolia: Focusing on Changes in Press on Diplomatic Relations between the two countries after the establishment of Diplomatic ties between Korea and Mongolia (몽골에 대한 국내 뉴스 토픽 모델링: 한몽 수교 이후 양국 관계 보도 양상 변화를 중심으로)

  • Yoon, Ji-Soo;Jin, XianMei
    • The Journal of the Korea Contents Association
    • /
    • v.22 no.4
    • /
    • pp.37-46
    • /
    • 2022
  • During the study, big data analysis was conducted focusing on domestic media reports related to Mongolia. The Latent Dirichlet Allocation(LDA) topic modeling was conducted using 130,000 articles with the keyword 'Mongolia' as the target of analysis. As a result of deriving and examining major topics for each period, there were disappearing subjects as the diplomacy level was raised, but most appeared in the beginning were remained and additional issues in various fields were shown.