• 제목/요약/키워드: Composite material certification

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A Study on the Pilot Qualification and Qualification System Establishment of The Aerospace Composite Materials

  • Yong Man Yang;Sung In Cho;Seok Ho Jeong;Je-Jun Kim;Manseok Oh;Young Hwan Kim
    • International Journal of Aerospace System Engineering
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    • 제10권1호
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    • pp.14-24
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    • 2023
  • The materials applied to the aircraft fuselage, parts, and components must be verified by relative authorities in accordance with the procedures set by the airworthiness authority to achieve the aircraft type certification. There are no examples of domestic composite materials which were verified in order to be applied to aircraft structure. In this study, the composite material certification system of NCAMP, an American composite material standard certification organization, was reviewed and used as the fundamentals of the first aerospace composite material certification system in ROK(Fig 2,8). Also updated material certification documents were developed and confirmed by material certification engineers and inspectors. This aerospace composite material qualification system is intended to modernize the material certification system for AAM(Advanced Air Mobility) as well as aircraft and to enhance the understanding of related technicians and inspectors.

항공기용 복합소재 인증 고찰 (An Overview of Composite Material Qualification for Aircraft)

  • 양용만;윤범수;전승목;이승근;백운율;오만석
    • Composites Research
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    • 제36권5호
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    • pp.361-368
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    • 2023
  • 항공기에 사용되는 복합소재는 항공기의 감항성 확보를 위하여 인증된 소재를 사용해야 하며 소재의 물리적 특성 및 공정을 확인하여 재료규격 및 공정규격서등의 인증 문서와 시스템을 승인하는 방식으로 인증이 진행된다. 국내 복합소재 인증시스템은 국토교통부의 항공기용 복합재료 시범인증 사업을 통해 마련되었으며 현재 항공기 전문검사기관인 항공안전기술원에서 인증 및 공유 데이터시스템을 구축하여 운영하고 있다. 본 논문은 실증을 바탕으로 구축된 항공기용 복합소재 인증체계의 개선사항을 식별하고 이에 대한 개선 방안 도출을 통해 국산 항공기용 복합소재의 인증 및 산업 활성화 방안을 제시하였다.

항공기용 국산 복합재료 인증체계 및 발전방향에 대한 연구 (A Study on the Certification System and Development Plan of Domestic Composite Material for Aircraft Use)

  • 김일영
    • 항공우주시스템공학회지
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    • 제9권4호
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    • pp.43-48
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    • 2015
  • This paper presents the systematic and procedural approaches to ensure the safety of the composite material domestically developed and produced, for its use in the structure of aeronautical product in accordance with the applicable international standard, and to enhance its creditability. Based on this approaches, this paper eventually proposes the practical future plan to encourage and expand the adoption of domestic composite material as part of aeronautical product by aircraft manufacturer in global market.

국산 복합재료의 물성치 공유체계 수립을 위한 요구조건 (Requirements for Composite Material Property Sharing System to Korean Products)

  • 서장원;이승윤;이영대
    • 항공우주시스템공학회지
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    • 제7권1호
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    • pp.32-38
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    • 2013
  • This paper presents a survey results on the material properties sharing system database on composite in USA. The requirements on management and database for Korean composite product that meet KAS (Korean Airworthiness Standard) are suggested. The certification policy on composite material qualification of also introduced. The benefits to material supplier, aircraft manufacturer and certification authority, which get through the database have been considered. The database managing process, composite material manufacturing process, properties and design allowable meeting KAS have been suggested.

빌딩블록 접근법을 이용한 복합재 재료 허용치 및 설계치 설정 방법 (A Methodology to Determine Composite Material Allowables and Design Values Using Building Block Approach)

  • 김성준;이승규;황인희
    • 한국항공우주학회지
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    • 제50권6호
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    • pp.377-384
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    • 2022
  • 복합재 항공기 구조물의 설계 시 인증을 고려한 재료 허용치와 설계치의 설정이 매우 중요하다. 그리고 복합재 구조물의 재료 허용치와 설계치의 설정은 정적강도, 손상허용 요구 조건 및 환경효과가 고려되어야 한다. 빌딩블록 접근법은 오랫동안 민간 및 군수 항공 산업에 적용되어 왔으며 중요한 인증 방법론을 제공하였다. 현재의 인증 방법은 시편, 요소, 부구성품 및 전기체 시험을 포함하는 광범위한 실험을 기반으로 한다. 본 논문에서는 복합재 허용치 실험 사례가 제시되며 빌딩 블록 접근 방식의 중요한 배경 및 적용방법이 제시된다.

우주항공 재료시스템 품질인증 (Certification Methodology of Aerospace Materials System)

  • 이호성
    • 항공우주시스템공학회지
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    • 제1권2호
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    • pp.13-20
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    • 2007
  • Structural qualification plan (SQP) for aerospace vehicle is based on material certification methodology, which must be approved by certification authority. It is internationally required to use of statistically based material allowables to design aerospace vehicles with aerospace materials. In order to comply with this regulation, it is necessary to establish relatively large amount of database, which increases test costs and time. Recently NASA/FAA develop the new methodology which results in cost, time, and risk reduction, and satisfies the regulation at the same time. This paper summarizes the certification methodology of materials system as a part of structural qualification plan (SQP) of aerospace vehicles and also thermal management of the vehicle system, like thermal protection materials system and thermally conductive material system. Materials design allowable was determined using this method for a carbon/epoxy composite material.

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소형 항공기용 복합재료 인증 (Qualification of Composite Materials for Small Aircraft)

  • 서장원;박종혁;이종희
    • 항공우주시스템공학회지
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    • 제5권1호
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    • pp.17-23
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    • 2011
  • Since the time, cost and lack of regulatory information and guidance, one of the largest regulatory obstacles for an airframe manufacturer of polymer based advanced composite materials in certified aircraft applications, is to generate design allowables that will satisfy Airworthiness Regulations. In the past two decades, the design allowables used in military aircraft had been generated and applied in Korea, however the qualification of composite materials used in certifying airframe structure was not accomplished for design and demonstration of compliance to applicable airworthiness regulation. It is the intend of this paper that provide the basis of composite material qualification for small aircraft certification to the airworthiness regulation.

복합재항공기 연료시스템의 낙뢰보호설계 및 인증 연구 (Research on Aircraft Lightning Protection Design and Certification of Fuel System in Composite Material)

  • 이영제;조원일;전정환;고진환
    • 한국항공운항학회지
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    • 제25권4호
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    • pp.130-140
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    • 2017
  • Lightning protective design of an aircraft fuel system is closely related to the safety of the flight. Recently, composite material in building an aircraft becomes more important because it can reduce the weight of the aircraft. The composite materials decrease the protection against the effect of lightning. Lightning protective design of metal material aircraft has been researched for a long time and the design technique has been announced widely. However, research on the lightning protective design using composite material aircraft is very limited. In this study, lightning protective design for fuel tank structural component, access cover, fuel filler cap and drain valve in carbon fiber composite material aircraft have been presented. To show the compliance with FAA airworthiness standard regarding the presented protection designs, three steps, including lightning strike analysis, lightning environment analysis and certification test, were conducted in accordance with FAA AC 20-53.

복합재 소형 항공기 구조 인증 고려사항에 대한 고찰 (A Consideration on Composite Material Certification for Small Aircraft Structure)

  • 서장원
    • 항공우주산업기술동향
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    • 제7권1호
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    • pp.128-140
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    • 2009
  • 본 논문에서는 FAR Part 23에 따른 복합재 소형항공기 구조 인증시 복합재료의 인증활동에서 발생할 수 있는 기술적 문제점 또는 고려사항을 검토하고, 이에 대한 인증 신청자가 수행해야 할 것으로 예상되는 사항을 검토하였다. 본 논문은 복합재 인증시 발생하는 기술적 문제에 초점을 맞추어 규정과의 관계 및 인증 경험에 관련한 기술 적 문제를 설명하였다. 복합재 인증활동에 대한 개괄적 내용과 복합재 항공기 구조물의 인증에 유용한 지침과 참고자료를 제시하고 있다. 본 논문에 소개된 일반적인 인증에 관련한 내용은 모든 복합재료 구조에 대해 적용되어지지 않을 수 있으며, 비행 안전에 치명적이지 않는 2차 구조에 대해서는 적용되어지지 않을 수 있다.

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복합재 재료인증을 위한 시험입회 방법론 (Test Witness Methodology for Acquisition of the Composite Material Qualification Data)

  • 이승윤
    • 항공우주시스템공학회지
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    • 제9권3호
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    • pp.8-11
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    • 2015
  • Since the late 1990's, FAA, NASA and the aerospace industry have worked together to develop the sharing system of the composite material qualification databases which were obtained through the standardized fabrication and testing procedures. The result was what is now known as the AGATE(Advanced General Aviation Transport Experiments) or NCAMP(National Center for Advanced Materials Performance) methodology, a more cost-effective concept that shifts the major responsibility for qualification and testing from the aircraft manufacturer to the material supplier. The properties of composite materials are largely dependent on the testing as well as the raw material properties and the manufacturing process including the process control parameters. Thus it is important in the composite material qualification to comply with the standardized testing procedures. In this paper, I will describe the standardized witness methodologies of certification engineers to reduce the effect of testing variability within the qualification data.