• Journal of Advanced Navigation Technology
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• v.3 no.1
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• pp.69-90
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• 1999

The Korean airspace is very much limited, but its users are many. Especially many special using airspaces for military aircraft are formulated within the Taegu Flight Information Region and it is so restricted for civil aircraft to use the military airspaces. However, as the demand of civil air traffic is increasing, positive cooperation among the users of the airspace is needed to cope with the demand and to uplift the utilitation of the Korean airspace. Most of airspace except airways within the FIR are restricted areas, prohibited areas or operation areas for the military purpose. This thesis shows how to improve the utilitation of the Korean airspace and how much economical benefit the suggestion gives.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.23 no.4
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• pp.82-88
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• 2015

Airframe maintenance is regarded the most important maintenance action in airlines as the aircraft is the most valuable asset in their operation though the volume of airframe maintenance is the last in MRO market. In the selecting process of airframe MRO provider many kinds of evaluation criteria should be considered such as quality, expenses, TAT, capability, and customer support. This paper will suggest the way to select the airframe MRO in airlines and MRO business sectors using AHP.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.05a
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• pp.363-366
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• 2006

In general, pyrotechnic shock or pyroshock is generated during the operation of separation devices, which use explosives, such as pyrobolt, puronut, purocutter, linear shape charge, and so on. During the flight of launch vehicle, pyroshock is mainly produced at the events of satellite separation, fairing separation and stage separation. In this paper, characteristics of pyroshock are introduced in the first place and measured shock result data at the UMR of satellite mock-up during the separation tests of satellite and fairing are suggested. These results are compared with the suggested pyroshock test specification of satellite, and it finally confirms that the specification is reasonable for the qualification of satellite against pyroshock.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.24 no.3
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• pp.19-25
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• 2016

In this study, we surveyed the Marado status of the availability of emergency runway for the LSA, through site visits. For the future progress Marado flight tour operation, for LSA of 4 models with respect to just in case there was an emergency situation analysis of the availability of emergency runway. We analyzed the problems of the sloping runway with the changing elements for the kinetic and potential energy. The Bingo and CH-650 models of LSA are usability emergency runway of Marado for take-off and landing. But the AT-4 and CTLS models of LSA are limited or impossible to use emergency runway of the Marado.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.24 no.3
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• pp.37-47
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• 2016

After a thorough investigation of aviation accidents involving Korean national carriers both inside and outside of Korea and also after reviewing catastrophic events involving foreign carriers in Korea, we found numerous accidents that caused fatalities and serious personal injuries. Although the aircrafts involved were found to have no specific defects, many of the accidents were caused by the pilot's misjudgement according to previous studies. Our research is to find an new procedure to help the prevention of similar accidents by focusing particularly on CFIT accidents during the procedural operations of Non Precision Approach, Circling Approach and Visual Approach. Therefore, we emphasize the significance of this research on the development of the new checklist that will help achieve a safe and effective procedural operation for non precision approaches.

• The Journal of Korea Robotics Society
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• v.12 no.4
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• pp.432-440
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• 2017

In this paper, we propose a jellyfish distribution recognition and monitoring system using a UAV (unmanned aerial vehicle). The UAV was designed to satisfy the requirements for flight in ocean environment. The target jellyfish, Aurelia aurita, is recognized through convolutional neural network and its distribution is calculated. The modified deep neural network architecture has been developed to have reliable recognition accuracy and fast operation speed. Recognition speed is about 400 times faster than GoogLeNet by using a lightweight network architecture. We also introduce the method for selecting candidates to be used as inputs to the proposed network. The recognition accuracy of the jellyfish is improved by removing the probability value of the meaningless class among the probability vectors of the evaluated input image and re-evaluating it by normalization. The jellyfish distribution is calculated based on the unit jellyfish image recognized. The distribution level is defined by using the novelty concept of the distribution map buffer.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.8 no.1
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• pp.95-109
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• 2000

The analyses of the aircraft accidents across all of the world, including Korea, reported that 70 % of the accidents could be attributed to the faults of pilots' human factors. It implied that the aircraft accidents could be cut down remarkably if the pilots' faults were reduced. In this context, the purpose of the study were to explore and reduce the problems of authoritarian job performance in the cockpit operation of which mainly depended on the captain, though it was supposed that two or more pilots work together as a team. In relation to this, the current worldwide trend of pilot education had tended to emphasize education on the human factors of pilots since the strong recommendation of the International Civil Aviation Organization in the 1980's. From the educational dimension of the pilots, it was attempted to explore a new educational perspective which would enhance the flight crew's performance of the cockpit through improving the courses of the pilot education curriculum and the teaching-learning methods.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.8 no.1
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• pp.7-21
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• 2000

Magnitudes of Magnetic field, Electronic field and Microwave was measured during the each stage of flight in the airline operation. The results was much higher than the safety standard and proved to be serious to the cockpit crews on their duty. We also identified that the magnitude of electronic field was much decreased by all three kinds of microwave protection equipments. We recommend that the cockpit crew have to wear the protection clothes to reduce the hazardous effects on their duty and the aircraft manufacturers have to consider the microwave-reduced cockpit in the initial stage of aircraft design.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.14 no.4
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• pp.110-119
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• 2006

This research was conducted with a view to enhance the efficiency of the preventive tool which provide pilots and controllers with proper and timely safety alerts while conducting circling approach at the airport where surrounding terrains becomes threat to safe operation of flight around airport.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.7 no.1
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• pp.41-55
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• 1999

In case of KOREA, many difficulties are expected for pilots to adapt to the flight operational environment changes which we will meet suddenly in anytime of the future as the operating plan for GPS is not fully prepared yet. It is because GPS operation is rather difficult compared to other navigation equipments, and it takes much time and experience to be familiar with GPS instrument approach procedure. First of all, it is keenly required to establish GPS instrument approach procedure for the local airports to be familiar with GPS instrument approach procedure. We would like to introduce GPS instrument approach procedure for the Cheju International Airport as a basic model to help you to understand it.