• 한국항공운항학회:학술대회논문집
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• 2015.11a
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• pp.29-31
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• 2015

항공레저 스포츠의 급속적인 활성화 추세에 따라 국내 최초로 스포츠급 경항공기 KLA-100이 개발중이다. 본 개발 과제를 통해 경항공기 분야의 독자 개발과 인증에 필요한 기술을 확보하고 국내 경항공기 개발의 토대를 마련하기 위하여 그동안 축적된 항공기 개발 기술을 최대한 활용하여 해외 경항공기 개발 전문회사의 기술지원을 통해 항공기 개발 완성을 그 목표로 노력하고 있다. 본 연구에서는 현재 상세설계가 완료된 경항공기의 형상해석 수행 결과를 소개하였다.

• KLA journal
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• v.48 no.11 s.389
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• pp.100-100
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• 2007

• KLA journal
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• v.2 no.2
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• pp.30-34
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• 1961

• KLA journal
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• v.43 no.1 s.332
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• pp.100-103
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• 2002

• KLA journal
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• v.55 no.12
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• pp.42-45
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• 2014

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.41 no.8
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• pp.649-656
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• 2013

High-lift devices have a major influence on takeoff, landing and stall performance of an aircraft. Therefore, a slotted flap design optimization process is proposed in this paper to obtain the most effective flap configuration from supported 2D flap configuration. Flap deflection, Gap and Overlap are considered as main contributors to flap lift increment. ANSYS Fluent 13.0.0$^{(R)}$ is used as aerodynamic analysis software that provides accurate solution at given flight conditions. Optimum configuration is obtained by Sequential Quadratic Programing (SQP) algorithm. Performance of the aircraft with optimized flap is estimated using Aircraft Design Synthesis Program (ADSP), the in-house performance analysis code. Obtained parameters such as takeoff, landing distance and stall speed met KAS-VLA airworthiness requirements.

• KLA journal
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• v.46 no.12 s.367
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• pp.60-63
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• 2005

2004년에 이어 2005년에는 '책 읽는 서울'사업으로 도서관을 중심으로한 '한 도서관 한 책 읽기 운동'을 추진하였다. 이를 위해 지난 7월 21일 '한 도서관 한 책 읽기 사업 지원' 신청 접수를 받아 그 중 16개관을 선정 500만원에서 100만원까지 사업비를 차등 지원한 바 있다. 그 중 가장 좋은 평가를 받았던 서울특별시립어린이도서관의 다채로운 행사 결과를 본 지에 소개한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.5
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• pp.15-21
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• 2021

Electrically powered airplanes can reduce CO₂ emissions from fossil fuel use and reduce airplane costs in the long run through efficient energy use. For this reason, advanced aviation countries such as the United States and the European Union are leading the development of innovative technologies to implement the full-electric airplane in the future. Currently, the research and development to convert existing two-seater engine airplanes to electric-powered airplanes are underway domestically. The airplane converted to electric propulsion is the KLA-100, which aims to carry out a 30-minute flight test with a battery pack installed using the engine mounting space and copilot space. The lithium-ion battery installed on the airplane converted to electric propulsion was designed with a specific power of 150Wh/kg, weight of 200kg, and a C-rate 3~4. This study confirmed the possibility of a 30-minute flight with a designed battery pack before conducting a flight test of a modified electrically propelled airplane. The battery performance was verified by dividing the 30-minute flight profile into start/run stage, take-off stage, climbing stage, cruise stage, descending stage, and landing/run stage. The final target of the 30-minute flight was evaluated by calculating the battery capacity required for each stage. Furthermore, the flight performance of the electrically propelled airplane was determined by calculating the flight availability time and navigation distance according to the flight speed.

• KLA journal
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• v.46 no.9 s.364
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• pp.22-25
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• 2005

지난 7월 20일 미국대사관 자료정보센터 주최로 '미국에서의 도서관 역할과 미래' 에 대한 워크숍이 개최되었다. 이날 모임에는 약 100명의 공공, 대학, 전문, 특수도서관 사서 및 조사부 기자들이 참석하였으며, 도서관 환경의 급격한 변화 속에서 우리 도서관과 사서가 어떻게 미래를 준비할 것인가에 대하여 미국 도서관계 인사들의 발표에 이어 청중들간의 활발한 토의가 있었다. 해외 도서관 인사들의 새로운 시각이 국내 도서관계에 도움이 되었으면 하는 바람에서 주요 발표내용을 요약하여 이번 호에 게재한다.

• Microbiology and Biotechnology Letters
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• v.35 no.4
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• pp.352-356
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• 2007

A Lactobacillus sp. has been isolated from infant feces and characterized according to its physiological properties and identified as Lactobacillus acidophilus KLA1012. A gene coding surface layer protein (SLP) has been cloned and the sequence has been determined. The nucleotide sequence of slpA was 1,338 bp in size and was identical to that of L. acidophilus ATCC 4356 (100%). Amino acid sequence of SLP-A was deduced from the nucleotide sequence and it had signal sequence at N-terminal, consisting of positively charged amino acid mainly lysine. slpA was cloned and heterologously expressed in E. coli M15 and the 45.2 kDa surface-layer protein band was examined by SDS-PAGE and confirmed by Western blotting using polyclonal antibody against L. acidophilus KLA 1012 SLP-A protein.