• 대한안전경영과학회지
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• 제19권3호
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• pp.27-33
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• 2017

Electrical product safety certification is for public safety. Korea electrical safety certification (KC) is being tested and certified on the base of Korean electrical appliance safety act and KC scheme. There are operating system and Electrical safety standards in the KC scheme. KC' operating system was adapted from japan operating system of Japan certification scheme. But KC certification' electrical safety standard was adapted from IEC standards of IECEE CB scheme. So There are many problems such as difference of version between KC standards and IEC standards, discrepancy between operating system and standards. Therefore, This paper analyzed the reason of discrepancy and proposed the improved KC certification operating system in order to reduce cost and to save time in the procedure of issuing KC approval for public safety in using electrical products and also for global competence.

• 대한안전경영과학회지
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• 제18권1호
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• pp.111-118
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• 2016

KC Mark is one of the country's integrated legal force to the minimum mandatory certification mark system for safety. That is absolutely needed for manufacturing and sales of goods in Korea. This thesis intended to see what is prevalent for both imports and domestic products for illegal and defect and rebuild the ecosystem as soon as possible for the healthy development through public awareness. In this theses point out the seriousness of the problem based on the various kinds of press releases, data of KCA(Korea Consumer Agency), MOTIE(Ministry of Trade, Industry and Energy) and KCA(Korea Customs Service) to the problem of certification system of KC mark and propose a solution to that issue. This study is considered to make befit the nation's place in the world and sustainable development is possible about the system of certification KC. This study expect more research on this issue in order to make enhance the confidence of KC mark.

• 대한안전경영과학회지
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• 제17권3호
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• pp.307-317
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• 2015

This study was to identify the effect of the satisfaction of certification, the educational use of the company offering certificate, the system of confirmation of the same model and the demographic aspect on the companies to see if compulsory certification(KC certificate) has negative effects on company management. First, the satisfaction of certification could reflect positive influences on company management. Second, there is no statistical significance in the education from the company offering certificate as a result of analyzing relationships but education is required and has an effect on improving quality according to the result of frequency analysis. Last, the system to declare by identifying the same model has a difference in significance in sales account, the development of products and warranty service for products.

• 항공우주시스템공학회지
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• 제7권2호
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• pp.47-54
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• 2013

This paper describes and analyzes the HIRF protection standards of the helicopter category focused on external RF environments. In addition, this paper presents an ideal process of airplane design to accomplish the successful certification. Furthermore, this paper proposes practical recommendations to reduce RF energy on aircraft using specific EMI/EMC techniques such as shielding, grounding and filtering methods. Most of the proposed methods in this paper were key issues during the certification process of KC-100 small airplane which is Korea's first trial aircraft for civil airplane certification.

• 한국항공우주학회지
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• 제46권8호
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• pp.694-701
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• 2018

현재 항공기 민수인증분야에서 국제적으로 사용하고 있는 항공기 소음인증기준인 ICAO Annex 16 Vol. I에서는 항공기의 종류에 따라 A-Weighted SPL, EPNL, SEL 계산법을 사용하고 있다. 우리나라를 포함한 미국, 유럽도 이를 기반으로 항공기 소음인증기준을 개발하여 사용하고 있으며, KAS 36, CS 36, FAR 36 기준이 모두 동등하고 제한 값은 동일하다. 소형 항공기의 경우에는 이륙소음 한계만 규정하고 있으며, dB(A) 단위의 A-Weighted SPL 계산법을 사용하고 있다. 국내에서는 2012년 8월에 KC-100 항공기에 대하여 소음인증을 최초로 수행한 바 있으며, 당시 FAA와 함께 KAS 36과 FAR 36 해당 기준을 동시에 만족하는지 시험평가 되었다. 소음인증시험의 경우 시험조건과 처리방법이 까다로워 많은 경험과 배경지식이 필요하다. 이에 KC-100 인증비행시험을 기반으로 소형비행기의 소음인증 기준 분석과 시험조건 및 데이터 처리방법을 실 인증사례를 바탕으로 제시하고자 한다.

• 항공우주시스템공학회지
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• 제8권3호
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• pp.47-54
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• 2014

This is a research on the method of how to improve stall characteristics for the small general aviation airplanes to meet the FAR part 23 requirements. This research is based on the experience of certification flight tests of KC-100 airplane for Korea type certification. KAS/FAR Part 23.201/203 are the stall characteristics requirements. 23.201 requires to show the stable stalling tendency of the wings level stall and 23.203 requires to show the stable stalling tendency of stall characteristics during turning flight. In this paper, the stall characteristics requirements, improvement methods and flight test experience of KC-100 airplane for type certification.

• 항공우주시스템공학회지
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• 제5권2호
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• pp.18-26
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• 2011

This is the study to introduce the Japanese Type Certification System for Domestic Aircraft and current status of Bilateral Aviation Safety Agreement. The study on the Japanese Type Certification System will contribute to understand our aircraft certification system and will be a reference in performing the Type Certification Project on KC-100 airplane in the Part 23 Normal Category.

• 항공우주시스템공학회지
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• 제14권5호
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• pp.49-57
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• 2020

KC-100은 국토교통부로부터 민간형식인증이 완료되었고 현재 국토교통부 사업의 일환으로 무인비행기로 개조 개발 중이다. KC-100을 무인화 개조한 무인비행기 시스템(CTsUA System)은 고중량의 임무장비 탑재 및 장시간 비행 임무 수행 등이 가능하도록 개발하고 있다. 본 연구는 CTsUA System의 운용개념에 기반한 임무형상을 수행하기 위하여 각 단계별로 항공기 중량, 대기속도, 비행고도, 필요마력, 연료소모량 등 다양한 파라미터에 대하여 분석하는 과정과 결과에 대한 것이다. 최대이륙중량 3,600lbs(1,633kg)를 유지하기 위해서는 무인화시스템을 위한 적용 장비의 중량은 80lbs(36kg) 이하로 유지해야 하는 것으로 분석되었다.

• 한국환경보건학회지
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• 제45권5호
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• pp.443-456
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• 2019

Objectives: Children are exposed to various environmental pollutants through contact with children's products. We investigated the KC mark, certification number, and contained substances labeled on children's products through market research and collected the toxicological data on these substances. Methods: The environmentally hazardous substances labeled on children's products (n=6576), including toys (n=2812), personal care products (n=2212), stationary/books (n=1333), and playground equipment (n=219) were examined. For the components that could be identified by CAS number, toxicological data on oral, inhalation, and dermal routes, cancer slope factor, and reference dose were collected. Results: Among the investigated products, KC marks or certification numbers were found for 4557 products (69.3%). Except for cosmetics and cleansers, the material information was labeled on most of the products. The frequency of labeling substance information in toys and stationary/books was low since this information could be omitted if KC certification was obtained. In the target products, 617 substances were identified by CAS number, and polypropylene, acrylonitrile butadiene styrene, and polyester were the most frequently displayed. Chronic toxicity data was found for only 32.4% of individual components, and information on toxicity through the dermal route was also highly limited. Conclusion: Our study suggested that labeling guidelines should be required to identify the environmentally hazardous substances contained in children's products. In addition, the toxicological data on many ingredients in children's products were insufficient. The data gap for toxicity data should be filled for future risk assessment.

• 항공우주시스템공학회지
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• 제7권2호
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• pp.23-28
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• 2013

This is a research on the method of how to improve lateral stability for the small general aviation airplane to meet the FAR part 23 requirements. This research is based on the experience of certification flight tests of KC-100 airplane for Korea first type certification. KAS/FAR Part 23.177 is the static lateral and directional stability requirement. And, 23.177(b) requires to show the tendency to raise the low wing in steady heading side slip maneuver. However, it is very difficult for the low wing to be raised at the low speed during the steady heading side slip maneuver. So, the requirement allows not be negative at the $1.2V_{S1}$ speed and takeoff configuration. (static stability requirement requires low wing picked up at any speed except $1.2V_{S1}$ speed and takeoff configuration) In this paper, the static lateral stability requirements and the lessons & learned of KC-100 airplane certification flight test results are shown.