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정용운(Jung, Yong Wun),전용민(Jun, Yong Min) 한국항공우주연구원 2013 항공우주산업기술동향 Vol.11 No.2
터보프롭 항공기는 대개 400 nm 이하의 단거리용으로 이용되고 있다. 항공기 운용에 소요되는 비용 COC에는 연료비, 승무원비용, 이착륙비용, 공항사용료 등으로 구성이 되는데, 단거리 운항에서는 연료비가 차지 하는 비중이 COC의 50% 수준이다. 따라서 고유가가 지속됨에 따라서 연료소모율이 낮은 터보프롭 항공기가 항공기 시장에서 지속적으로 관심을 받고 있다. 터보프롭 시장을 양분하고 있는 ATR과 Bombardier는 90석급 터보프롭 항공기에 대한 계획은 발표하였으나 착수 시점에 대해서는 명확하게 의사 표명을 하지 않고 있다. 하지만 시장요구에 따라서 90석급 터보프롭 항공기에 적용 가능한 5,000마력 이상의 차세대 터보프롭 엔진 개발을 착수하기 위하여 각 엔진사가 노력 중이다. 본 문서에서는 중형급 터보프롭 항공기의 시장 동향과 각 엔진사에서 준비 중인 차세대 터보프롭 엔진의 개발 동향에 대해서 조사하여 정리하였다. The turboprop aircraft has been generally used for a short distance flight below 400 nm. The COC(Cash Operating Cost) that means the cost required for an airplane operation is composed of fuel cost, crew cost, landing fee, ground-handling fee etc. The fuel cost on the short distance flight is approximately half of the total COC. Therefore, recently airline companies take an interest in the regional turboprop aircraft as the high fuel cost is sustained. Major turboprop manufacturers, Bombardier and ATR, that have contemplated launching a 90-seat aircraft, have not announced any detailed plan of a 90-seat aircraft. However, Engine companies, specially P&WC and GE, are preparing the 5,000 shp class next generation turboprop engine and trying to fine launching customer. In this paper, we surveyed the market trend of regional turboprop aircraft and the development trend of turboprop engine for this aircraft.
정용운(Jung, Yong-Wun),이융교(Lee, Yung-Gyo),강왕구(Kang, Wang-Gu),김동민(Kim, Dong-Min),염찬홍(Yeom, Chan-Hong) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06
The effort to realize the concept of stratospheric airship, which can fly at about 20km altitude, has been persevered since late 1980's. Referring to the feasibility study of ensuring the flight duration of the airship over 1year, total weight is about 30 tons, the length is about 200m. There are lots of key technologies to be solved to develop the system, and one of the essential prerequisite technologies is regenerative fuel cell system. In this paper, design requirement of regenerative fuel cell system is introduced with the feasibility study results of the challenging stratospheric airship.
정용운(Jung Yong Wun),강왕구(Kang Wang Gu),류종학(Ryu Jong Hak) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Recently strong interest is focused on unmanned vehicles as like drone (small UAV), autonomous vehicle, and HALE(high altitude long endurance aircraft). A few years ago, unmanned vehicle was considered only for military usage. But depending on technical development and increase of various market need, commercial market demand is increasing dramatically. In this paper, we investigated the market demand of unmanned vehicle which is operated on the ground and marine as well as sky. Furthermore, we performed the market forecast during next 15 years and tried to show our advancing direction of technical development.