• Journal of Advanced Navigation Technology
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• v.19 no.2
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• pp.91-97
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• 2015

This paper specifies several considerations about assessing safety-critical software in the aerospace domain. In order to evaluate safety critical software in the aerospace industry, it is required to identify an information of evaluation criteria of software under evaluation. The information is specified in the standard, but determination of evaluation criteria cannot be decided by itself and depends on the results of safety assessment of a system and system design. Thus, this paper explains required information of system development standard and safety assessment standard to determine software evaluation criteria. It surveys existing methodologies about evaluating software, and suggests method which is adapted to evaluation of an advanced surface movement guidance and control system (A-SMGCS) software.

• The Journal of Aerospace Industry
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• s.67
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• pp.71-94
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• 2004

전 세계 항공 산업의 비약적인 발전과 더불어 최근에는 군사용 및 항공수송을 위해 주간뿐만 아니라 야간에도 많은 비행이 요구되고 있으며, 이에 따라 항공기 안전운행의 필요성이 크게 대두되고 있다. 이러한 항공기의 안전운행에는 다양한 기술적인 발전이 진행되어 왔고, 야간시각시스템(NVIS)의 발전 역시 항공기 조종사에게 주간과 유사한 시각적 영상정보를 제공함으로써 심리적인 불안감을 해소시키고, 운항정보에 대한 신뢰성과 적시성을 증대시키며, 야간에 항공기를 안전하게 운항하기 위해 조종사의 업무부아(work load)를 줄이기 위한 노력으로 큰 관심사가 되어왔다. 또한 이러한 NVIS를 활용한 기술은 현재 군용항공기 뿐만이 아니라. 민간용 항공기, 자동차, 카메라, 레저용 등으로 그 범위가 확대되어 보급되고 있으며, 활용도 또한 커지고 있고, 수년 전부터 국내에도 이러한 기술이 적용되어 왔기에 이러한 항공기용 야간시각시스템(NVIS)에 대한 전반적인 내용을 소개하고, 향후 국내에서 개발/적용되는 항공기의 NVIS 기술에 대한 기본적인 평가방향을 제시하고자 한다.

• Proceedings of the Korea Contents Association Conference
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• 2007.11a
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• pp.769-772
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• 2007

This research was conducted to investigate the economoic effects of aviation safety technology development. The important subjects of aviation safety technology development, aviation accident prevention and damage reduction technique, aircraft safety certification development, BASA promotion in an aircraft class, were included to investigate the economic effects. The survey technique using Benefit-Cost Anlysis was performed and the results showed that aviation safety technology development brought scientific technique effect, industrial and economic effect, and the rest effects. Also, the benefits from aviation safety technology development were much greater than the costs.

• The Korean Journal of Air & Space Law and Policy
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• v.29 no.1
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• pp.67-95
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• 2014

Some Contracting States of the Chicago Convention issue FAOC(Foreign Air Operator Certificate) and conduct various safety assessments for the safety of the foreign operators which operate to their state. These FAOC and safety audits on the foreign operators are being expanded to other parts of the world. While this trend is the strengthening measure of aviation safety resulting in the reduction of aircraft accident. FAOC also burdens the other contracting States to the Chicago Convention due to additional requirements and late permission. EASA(European Aviation Safety Agency) is a body governed by European Basic Regulation. EASA was set up in 2003 and conduct specific regulatory and executive tasks in the field of civil aviation safety and environmental protection. EASA's mission is to promote the highest common standards of safety and environmental protection in civil aviation. The task of the EASA has been expanded from airworthiness to air operations and currently includes the rulemaking and standardization of airworthiness, air crew, air operations, TCO, ATM/ANS safety oversight, aerodromes, etc. According to Implementing Rule, Commission Regulation(EU) No 452/2014, EASA has the mandate to issue safety authorizations to commercial air carriers from outside the EU as from 26 May 2014. Third country operators (TCO) flying to any of the 28 EU Member States and/or to 4 EFTA States (Iceland, Norway, Liechtenstein, Switzerland) must apply to EASA for a so called TCO authorization. EASA will only take over the safety-related part of foreign operator assessment. Operating permits will continue to be issued by the national authorities. A 30-month transition period ensures smooth implementation without interrupting international air operations of foreign air carriers to the EU/EASA. Operators who are currently flying to Europe can continue to do so, but must submit an application for a TCO authorization before 26 November 2014. After the transition period, which lasts until 26 November 2016, a valid TCO authorization will be a mandatory prerequisite, in the absence of which an operating permit cannot be issued by a Member State. The European TCO authorization regime does not differentiate between scheduled and non-scheduled commercial air transport operations in principle. All TCO with commercial air transport need to apply for a TCO authorization. Operators with a potential need of operating to the EU at some time in the near future are advised to apply for a TCO authorization in due course, even when the date of operations is unknown. For all the issue mentioned above, I have studied the function of EASA and EU Regulation including TCO Implementing Rule newly introduced, and suggested some proposals. I hope that this paper is 1) to help preparation of TCO authorization, 2) to help understanding about the international issue, 3) to help the improvement of korean aviation regulations and government organizations, 4) to help compliance with international standards and to contribute to the promotion of aviation safety, in addition.

• Aerospace Industry
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• v.49
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• pp.12-21
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• 1997

• Aerospace Industry
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• v.48
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• pp.24-33
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• 1997

• Aerospace Engineering and Technology
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• v.6 no.2
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• pp.229-235
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• 2007

Reliability is the ability of a system or component to perform its required functions under stated conditions for a specified period of time. It is recognized that reliability is a key point of technical competency. This paper presents background of reliability and accelerated test concept, and verified the MTBF and assessed safety of airborne starter-generator through accelerated life test.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06d
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• pp.21-25
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• 2010

항공기반시설(공항, 기상 서비스, 항로 항행시설)에 대한 보안사고 대응을 위한 보안체계는 수립단계에서부터 착수하여 분석이 진행됨에 따라 세부적인 평가가 수행되어야하며, 시설변경이 발생하는 경우 변경된 시설에 대하여 재평가를 하여야 한다. 또한 항공기 운용과정에서 발생 가능한 각종 사고에 대한 사전 예방 및 정비를 위해서도 체계적인 보안성 평가가 필수적이다. 보안성 평가에는 계획(Plan), 활동(Do), 그리고 평가(Check), 조치(Action)업무가 네트워크 구조로 통합되어 적용되며, 과거의 사용 또는 경험에 따라 세분화된 보안성 평가 요구조건을 구분하여 적용한다. 특히 항공기반시설에 대한 보안성 입증과 안전한 운항을 보장하기 위하여 실시간 지원체계와 국가 차원에서 이를 관리하여야 한다. 이는 공공의 안전을 확보하기 위한 것으로서, 민간항공업체는 해당 법규, 표준서 및 지침 등에 따라 최소한의 보안성을 입증하여야 한다. 따라서 본 논문에서는 항공기반시설에 대한 보안사고 대응을 위한 보안체계를 위해 설정된 보안의 목표를 충족하고 있는지를 확인 평가하고, 분석 등을 고려하여 종합적인 보안성 평가기법을 적용할 수 있도록 하는 보안체계 네트워크 모델에 대해 제시하고자 한다.

• Journal of Aerospace System Engineering
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• v.17 no.5
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• pp.58-62
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• 2023

In this work, the structural integrity was investigated of the structural design results of internal components for the aircraft engine. The radiator and intercooler were combined with the internal components of the engine. Therefore, the safety of the radiator and intercooler was investigated during flight conditions. The structural integrity was evaluated through structural analysis, using the finite element analysis method. The acceleration load for structural design and analysis was considered. The structural safety evaluation found the structural design results to be valid.

• Journal of Aerospace System Engineering
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• v.16 no.3
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• pp.52-62
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• 2022

In the SORA methodology developed for the operational risk assessment of a specific category of operation of a UAS, the ground and the air risk levels are determined, and a SAIL indicating the level of assurance and integrity for the corresponding risk is assigned, and accordingly, the operational safety level for the proposed operation. Objectives should be demonstrated at an appropriate level of robustness. Because of the nature of the specific category of operation, people on the ground are the first risk subjects to be considered. The resulting ground risk class plays an important role in the allocation of SAIL. In this paper, the impact on SAIL and OSO according to the final risk level and the reduction of the level through the determination of the ground risk level and the application of mitigation measures among risk assessments for specific categories of UAV operation was investigated.