• 한국항공운항학회지
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• 제25권4호
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• pp.170-176
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• 2017

In recent years, Unmanned Aerial Vehicles (UAVs) were actively developed in various fields. In development process of UAVs, flight test is performed to ensure that minimum safety requirements and technical requirements are met. By constructing flight test infrastructure such as takeoff and landing facilities, operation procedure, and equipments, flight test can be performed effectively. In this paper, operation procedures of civil UAV's flight test are proposed. The procedures proposed are composed by two main steps: first, planning and permitting procedure of flight test. Secondly, execution and control procedure of flight test.

• 한국항공운항학회지
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• 제31권2호
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• pp.89-94
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• 2023

Recently, domestic small airport development plans are being promoted centering on islands, and among them, Baengnyeong Island Airport is located very close to North Korea due to its geographical characteristics. In particular, since it is located in the P-518, which is prohibited airspace, it is essential to configure the arrival/departure flight procedure route similarly to the current ship in terms of securing flight safety. Therefore, in this study, a plan for airport location and facility scale was proposed by focusing on the runway operated for the purpose of aircraft operation through consultations with the Ministry of National Defense. It was proposed to meet the standards of the Airport Facility Act as an airport dedicated to domestic flights for airside facilities such as runway length and direction, target aircraft, landing pad, apron, runway and taxiway width appropriate for the topographical characteristics of Baengnyeong Island. As a result, the flight procedure is generally established as a two-way visual flight, but the 10-way arrival/departure procedure was planned to be changed to an instrument (non-precision) according to the specificity of the region. In addition, a flight procedure was established and presented for safe and systematic operation by reflecting the changes in airport facility size (landing pad, runway end safety area, etc.) following the change in instrument flight procedure in the visual flight procedure.

• 항공우주시스템공학회지
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• 제7권3호
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• pp.45-50
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• 2013

This is a research report about the method of how to maintain qualification of certification flight test crews. KCA(Korea Certification Agency) have completed the KC-100 airplane certification flight tests which is the first time experienced flight tests operation. After the certification flight test, it has been found that annual flying time requirement of 100 hours to the certification flight test pilot is too strict, and other several requirements to maintain the qualification of the certification test crew such as aircraft certification introduction training, initial flight test pilot and flight test engineer certification training, crew resource management training, aviation physiology training, and survival training was difficult to implement in Korean civil aviation environments. In this study, it was suggested that 30 hours of flying time for maintaining certification flight test pilot qualification could be applied to contribute for safe operation of certification flight test and the other training requirements of the certification flight test crew could be fulfilled using self made training courses, existing FAA training courses and Korean Air Force training resources. Therefore, it is recommended that the regulation of maintaining the certification flight test crew qualification should be refined to implement the requirement practically.

• 한국항공운항학회지
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• 제31권1호
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• pp.79-91
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• 2023

In response to the recent surge in aviation demand, major airports and aviation authorities continue to make efforts to formulate arrival and approach procedures that take into account efficient aircraft separation, noise and environmental issues of carbon (CO2) emissions. In order to ensure efficient traffic control and environmental issues, as a result, a new concept Trombone, Point Merge, etc. have been introduced and widely used in the domestic airspace. However, these new concept procedures which do not properly reflect the characteristics of the aircraft operation performance and the FMS vertical descent guidance hinder flight efficiency as well as bring in turn negative factors such as level-off flight and the use of drag device at the busiest phase of the flight descent operation, like the Continuous Descent Operation (CDO). Accordingly, throughout modification the current Standard Terminal Arrival Route (STAR) and Instrument Approach Procedure(IAP) that reflect the aircraft descent performance and the FMS guidance, the flight operation safety and efficiency is expected to be improved eventually. We herewith analyze and propose the way of improving flight efficiency in the arrival operation procedure by supplementary modification which consequently contribute to the aviation industry international competitiveness.

• 한국항공운항학회지
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• 제18권4호
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• pp.106-112
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• 2010

After a series of aircraft noise measurements conducted in Noise Sensitive Areas(NSAs) in Gangwha Island, there appeared to be no regions affected by aircraft noise of over 75 WECPNL, the legal noise level standard for aircraft operations. However, with regard to the future environment where flight operations at Incheon International Airport are likely to escalate, an INM analysis result drawn shows that the number of regions afflicted by such noise will increase in Gangwha Island. Therefore, we studied similar cases from developed countries, which are pertinent to solutions for aircraft noise abatement in the vicinity of airports and herewith provided 6 more flight operation procedures other than those 3 currently in service at Incheon International Airport.

• 한국항공운항학회지
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• 제23권2호
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• pp.15-20
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• 2015

This paper introduces a new airspace design method for continuous climb operation (CCO). The optimization problem is formulated as Mixed-Integer Linear Program (MILP) to maximize the upper limits of altitude on the waypoints to facilitate continuous climb for aircraft. In the proposed method, the interactions with other flight procedures are considered as well as various aircraft flight performances. The proposed method is applied to one of the departure procedures of Incheon International Airport (ICN) to demonstrate its performances.

• Journal of Astronomy and Space Sciences
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• 제39권4호
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• pp.181-194
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• 2022

Korea Pathfinder Lunar Orbiter (KPLO), also known as Danuri, was successfully launched on 4 Aug. from Cape Canaveral Space Force Station using a Space-X Falcon-9 rocket. Flight dynamics (FD) operational readiness was one of the critical parts to be checked before the flight. To demonstrate FD software's readiness and enhance the operator's contingency response capabilities, KPLO FD specialists planned, organized, and conducted four simulations and two rehearsals before the KPLO launch. For the efficiency and integrity of FD simulation and rehearsal, different sets of blind test data were prepared, including the simulated tracking measurements that incorporated dynamical model errors, maneuver execution errors, and other errors associated with a tracking system. This paper presents the simulation and rehearsal results with lessons learned for the KPLO FD operational readiness checkout. As a result, every functionality of FD operation systems is firmly secured based on the operation procedure with an enhancement of contingency operational response capability. After conducting several simulations and rehearsals, KPLO FD specialists were much more confident in the flight teams' ability to overcome the challenges in a realistic flight and FD software's reliability in flying the KPLO. Moreover, the results of this work will provide numerous insights to the FD experts willing to prepare deep space flight operations.

• 한국항행학회논문지
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• 제28권3호
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• pp.272-277
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• 2024

대부분 국가에서 계기비행 절차는 국제민간항공기구(ICAO)의 DOC 8168, 항행 서비스 및 운항 절차(PANS-OPS) 또는 미국 연방항공청(FAA)의 터미널 절차(TERPS) 중 한 가지 기준을 적용해 설계된다. 특히, 선회접근 절차는 두 기준이 서로 많은 차이를 갖고 있고, 미국 터미널 절차(TERPS)는 2013년 이후에는 고도에 따라 확장된 기준을 적용함으로써 더 복잡해졌다. 선회접근 절차는 착륙을 위해 항공기를 에너지가 낮은 상태에서 지면과 가깝게 기동하는 것을 포함하므로 직진접근 절차보다 더 위험에 노출된다. 본 연구에서는 이들 차이점을 정확하게 알기 위해 선회접근 절차가 국내의 개별 공항에 따라 어떤 기준에 의해 설계되었는지를 구분하고, 선회접근 기동 중 최소장애물 회피를 보장하는 선회접근 구역 범위를 위한 반경을 산출하고, 안전한 선회접근 절차 수행을 위한 방법을 제시한다.

• 한국산학기술학회논문지
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• 제20권4호
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• pp.479-488
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• 2019

비행시험 운용절차는 유도무기 비행시험 시스템 설계 및 구현을 위한 중요 산출물의 하나로서 비행시험 진행 단계별 임무계획, 수행방법, 안전대책 등을 포함한다. 유도무기체계 개발이 첨단화, 전략화 됨에 따라서 유도무기 비행시험은 점차 복잡화, 광역화 되고 있다. 이에 따라 시험안전을 확보하기 위해서는 비행시험 운용절차의 신뢰성 증대가 요구되었다. 특히, 새로운 개념의 비행시험 수행을 위해서 시험 전 불확실성을 예측하고 대비할 수 있도록 비행시험 운용절차 설계에서 M&S 기법의 적용을 통한 검증이 필요하게 되었다. 관련 연구로서 비행시험의 최적 프레임워크 개발 연구와 비행시험 프로세스 모델기반 개선 연구들이 발표되었지만, 상위 개념의 프로세스를 중심으로 한 결과로서 하위 수준의 비행시험 자원과 연동하는 비행시험 운용절차에 직접 적용하기에는 구체성이 부족하였다. 또한, 기존의 문서기반으로 구성된 비행시험 운용절차는 시험자원의 거동과 성능에 대한 분석능력의 한계로 시험자원의 중복과 누락, 직관적이지 않는 표현으로 운용자 간의 의사소통 저하, 그리고 다수의 비행시험에 적용하기 위한 확장성 부족 등의 문제가 발생하였다. 이를 개선하기 위해 본 논문에서는 모델기반 시스템공학(MBSE) 기법의 적용을 통한 유도무기 비행시험 운용절차의 설계 방법을 제안하였다. 구체적으로 이전의 비행시험 정보를 기반으로 비행시험 진행 단계와 수행방안을 정의한 후, 요구사항으로부터 시험자원의 임무수행을 SysML 모델 기반으로 구성한 템플릿으로 제공하였다. 또한 시뮬레이션 분석을 통해서 정상상황과 비상상황에 대한 최적의 수행절차를 도출하였으며, 사례 적용을 통해서 검증하였다. 본 연구를 통해서 시험자원의 거동과 성능에 대한 분석능력의 증대로 신뢰성이 향상되었고, 다수의 비행시험에 적용할 수 있는 확장성으로 효율성이 증대되었으며, 향후 개발 예정인 유도 무기 비행시험에도 지속적으로 활용할 수 있다.

• 한국군사과학기술학회지
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• 제22권4호
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• pp.536-544
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• 2019

During the assembly and function inspection of missile system, flight simulation process is required. In the conventional flight simulation check of missiles, an inertial navigation system simulator was used to transmit the navigation output data acquired in HILS. There are several disadvantages in terms of check configuration complexity and data synchronization when using the simulator. So we proposed a new flight simulation method that utilizes the nonvolatile built-in memory of the aviation control unit. The data processing procedure and operation procedure of the proposed method for type I and type II missiles are presented. And we analyzed the causes of the difference between proposed method result and the HILS result for type II missile. By comparing the results obtained by the experiments using the proposed method with the results of HILS, the validity of proposed method was confirmed.