• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.48 no.10
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• pp.753-763
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• 2020

A wind tunnel test of 29.7% scaled model of NASA Common Research Model with belly model support was performed in small low speed wind tunnel. The static aerodynamic forces and moments of CRM were measured with belly sting support configuration. Pitching moments of belly sting with various fairings were compared and small interference fairing shape was found. The belly sting model support interference and reducing effect of fairing shapes with CFD analysis.

• Journal of the Korean Society of Propulsion Engineers
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• v.24 no.5
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• pp.56-64
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• 2020

A wind tunnel test of 29.7% scaled model of NASA Common Research Model was performed in small low speed wind tunnel. The wind tunnel model was fabricated in Aluminium in consultation with NASA Langley Research Center and AIAA Drag Prediction Workshop committee members. The static aerodynamic forces and moments were measured at a relatively low Reynolds number of 0.3 × 10⁶ due to tunnel capability limitations. Pitching moment of three types of model support(Fin sting, Blade sting and Belly sting) were compared. The pitching moment for corrected Belly sting and Fin sting were similar. The result of pitching moment for Blade sting was very small.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.30 no.8
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• pp.30-36
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• 2002

Wind tunnel model has some difference in shape compared to the real flight vehicle because of model support system for testing. The support system can make some differences in the measured forces and moments to the flight test data. There are several correction methods involved such as cavity pressure correction and model support interference. Internal balance and belly sting support were used for this wind tunnel test and three types of model support correction methods, variable sting thickness method, dummy sting method, and wire support method, were compared. Variable sting thickness method is well matched with wire support method, which is known for almost interference free.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.33 no.9
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• pp.27-33
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• 2005

This research presents the influence of the base region modeling on the aerodynamic characteristics of a launch vehicle using CFD. The vicinity of a launch vehicle is divided into four zones, and four computational cases are made using these four zones. The aerodynamic coefficients are predicted for the angle-of-attack of 6 degrees and Mach numbers ranging from 0.4 to 2.86. It was found that modeling of the base region should not be neglected for the prediction of the aerodynamic characteristics of a launch vehicle in subsonic and transonic regions. It was also found that the modeling of the sting support used in the wind tunnel test is necessary to get a better agreement with the experiments.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.327-332
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• 2016

Sting (Gordon Sumner) is a British musician and singer-songwriter. He was the principal songwriter, lead singer, and bassist for the new wave rock band 'The Police' from 1977 to 1984, before launching a solo career in 1985. With his stylish and sophisticated sensibility and musical spectra, he achieved 100 million album sales. In this thesis, after he disbanded the group THE POLICE, his career as a solo artist with his wide variety of musical colors has been acknowledged for his reputation over more than 30 years. Therefore, I analyze 'Sting' of music included in 'Straight To My Heart' and 'Be Still My Beating Heart' in. Songs in indicate that the drum part the tunes that there is in a record doesn't break away from the basic way of music. The role of the whole rhythm division through the various percussions or can see a synthesizer than the role as the cord musical instrument that there are lots of tunes placing a great deal of weight on the role as the rhythmic musical instrument more. The unique instrument-based rhythm of the early Sting and role dispensation create a unique sound that is quite different from what the musician subsequently recorded. The feature and rhythmic characteristic, which is the arrangement that appeared outstandingly in this record, I am trying to explain about the way in which I lead the basic flow of the tune through the rhythm division of the other musical instruments which I split that is, the drum beat and break away from a rhythm from the divided general way and include a percussion.

• Proceedings of the KAIS Fall Conference
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• 2012.05a
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• pp.86-90
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• 2012

본 논문에서는 영국을 대표하는 아티스트인 스팅이 폴리스 해체 이 후 25년이 넘도록 다양하고 폭넓은 자신만의 음악적 세계를 인정받는데 큰 발판이 되었던 음반에 포함된 곡을 중심으로 이 시기에 두드러지게 나타난 편곡적인 특징과 리듬적 특성, 즉 드럼비트를 쪼개서 리듬을 분할하는 기존의 통념에서 벗어나 퍼커션과 다른 악기들의 리듬분할을 통해 곡의 기본적인 흐름을 이끌어가는 방법에 대해 설명하고자 한다.

• Corrugated packaging logistics
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• no.61
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• pp.123-124
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• 2005

우리조합에서는 재정경제부와 산업자원부로부터 관세감면에 대한 업계의 의견을 조사하여 보고하도록 요청받아 2005년도 국산대체 불가한 골판지포장설비에 대한 관세감면대상물품을 2004년 5월$\~$6월에 조사한 결과, 골판지 제조기(지폭1,800mm)를 포함한 총11개 물품에 대하여 관세감면 대상물품을 신청하여 받았다. 이에 대하여 재정경제부는 2005년도에도 기존연장 10개품목, 신규추가, 1개품목(다목적스팅머신)은 8$\%$중 50$\%$를 감면받게 되었습니다.

• Corrugated packaging logistics
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• no.62
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• pp.126-127
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• 2005

우리조합에서는 재정경재부와 산업자원부로부터 관세감면에 대한 업계의 의견을 조사하여 보고하도록 요청받아 2005년도 국산대체 불가한 골판지포장설비에 대한 관세감면대상물품을 2004년 5월$\~$6월에 조사한 결과, 골판지 제조기(지폭1,800mm)를 포함한 총11개 물품에 대하여 관세감면 대상물품을 신청하여 지정받았다. 이에 대하여 재정경제부에서는 2005년도에도 기존연장 10개품목, 신규추가 1개품목(다목적스팅머신)은 8$\%$중 50$\%$를 감면받게 되었습니다.

• Proceedings of the Earthquake Engineering Society of Korea Conference
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• 2003.09a
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• pp.334-343
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• 2003

본 논문의 목적은 스팅베어링의 기존교량과 납-고무베어링(Lead-Rubber Bearing)으로 내진 보강된 교량에 대해서 갭(Gap)의 크기가 교량의 지진 취약도에 미치는 영향에 대해서 평가하였다. 이를 위해서 다경간 단순교(Multi-Span Simply Supported Bridge)와 다경간 연속교(Muti-Span Continuous Bridge)를 대상으로 취약도 분석을 실시하였다 또한 다양한 크기의 갭사이즈를 도입하여 해석을 실시하였다. 이를 통해서 갭사이즈의 변화가 각 교량의 구성품에 미치는 영향을 확률적으로 평가할 수 있었고, 합성된 취약도 곡선을 이용하여 최적의 갭사이즈를 확정할 수 있었다.

• The Transactions of the Korea Information Processing Society
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• v.3 no.7
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• pp.1858-1867
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• 1996

This paper describes a platform for video conferencing on Information Super Highway. In this paper we de-sign a Multi-Multicast Server(MCS) and the platform. The platform uses Multi-MultiCast Server for multitasking IP Multicast data on IP over ATM. Based on Multicast Address Resolution Server (AMRS) which was proposed in this paper the platform maps from D class IP addresses to ATM addresses. MARS handles a recovery in case of MCS down. This paper also presents a solving mechanism for handling botteneck by using the MCS.