• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2001.04a
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• pp.14-16
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• 2001

• Journal of the Korean Society of Propulsion Engineers
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• v.7 no.2
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• pp.70-75
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• 2003

• 비료회보
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• s.587
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• pp.30-34
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• 2006

올해는 과학기술부와 한국과학문화재단이 추진하는 사이언스 코리아 운동에 의해 ‘화학의 해’로 지정되었다. 인류가 지금 같은 문명생활을 누리고 있는 것은 화학의 발전 없이 불가능하다고 할 정도로 화학은 실생활과 밀접한 관련이 있다. 사이언스타임즌는 ‘2006 화학의 해’를 기념하고 화학에 대한 이해를 높이고자, 큰 업적을 남긴 화학자와 화학이 우리 생활과 어떤 연관이 있는지 알아보는 특집 시리즈를 마련한다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2005.11a
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• pp.196-200
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• 2005

A theoretical model for the calculation of chemical equilibrium composition of propellant combustion product is briefly presented for the performance analysis of monopropellant hydrazine rocket engine. Analysis result is compared to that of test and evaluation of 1-lbf class thruster and is scrutinized primarily from the view point of ammonia dissociation fraction. Chemical equilibrium composition and average molecular weight is additionally depicted according to the variation of propellant inlet pressures and the varying nozzle area ratio. The theoretical analysis is tried as a way of derivation of design parameters for mid- and large-thrust class of monopropellant rocket engines.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.148-153
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• 2017

During natural ageing of HTPB propellant undergoes a series of slow physico-chemical degradation reactions. By using accelerated ageing conditions it is possible to simulate the material behaviour at different time-temperature conditions especially focused on the in-service conditions. Ageing behaviour of HTPB propellant were investigated using HFC(Micro-Heat Flow Calorimeter) is universal technique for measuring the rate of slow chemical and physical processes in long-term storage.

• Journal of the Korean Society of Propulsion Engineers
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• v.22 no.5
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• pp.59-65
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• 2018

During natural aging, hydroxyl-terminated polybutadiene(HTPB) propellant undergoes a series of slow physico-chemical degradation reactions. By using accelerated ageing conditions it is possible to simulate the material behavior at different time-temperatures focusing on in-service conditions. Aging behaviors of HTPB propellant are investigated using HFC(heat flow calorimeter), a universal technique for measuring the rate of slow chemical and physical processes in long-term storage.

• Journal of the Korean Society of Propulsion Engineers
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• v.6 no.1
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• pp.12-20
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• 2002

An integrated analysis of kerosine/LOX based KSR-III rocket body/plume flowfield has been performed. The analysis has been executed employing three kind of gas thermo-chemical models including calorically perfect gas, multiple species chemically reacting gas, and chemically frozen gas models and their effect on rocket flowfield has been accessed to provide the most appropriate gas thermo-chemical model which meets a specific purpose of performing rocket body and plume analysis. The finite-rate chemically reacting flow solution exhibited higher temperature throughout the flowfield than other gas models due to the increased combustion gas temperature caused by the chemical reactions within the nozzle. All the reactions were dominated only in the shear layer and behind the barrel shock reflection region where the gas temperature is high and the effect of finite-rate chemical reactions on the flowfield was found to be minor. However, the present plume computation including finite-rate chemical reactions revealed major reactions occurring in the plume and their reaction mechanisms and as well.

• Journal of the Korean Society of Propulsion Engineers
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• v.12 no.3
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• pp.9-15
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• 2008

Nozzle flow analyses of $30\;ton_f$-class KARI liquid rocket engine for high altitude propulsion are carried out using a chemically frozen and equilibrium flow analysis code developed previously. It is considered that the combined frozen- and shifting- equilibrium analysis is cost-effective regarding the convergence characteristics and modeling uncertainties, though the non-equilibrium analysis is most reliable approach. A dependable performance prediction could be attainable through the present analyses that account for the recombination process and thermal and kinetic energy recovery during the expansion process with viscous effects.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2000.04a
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• pp.3-3
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• 2000

로켓엔진의 연소실은 가능한 크기가 작으면서 완전 연소되어 화학에너지를 운동에너지로 변환시킬수 있도록 연소성능이 우수해야 한다. 로켓의 연소성능을 해석적으로 구하기 위하여 많은 연구가 진행중이지만, 화학반응, 열전달, 유체유동 등이 복합적으로 관련되기 때문에 아직도 해석결과는 실제와 상당한 차이가 있으며, 결국 연소실험으로 정확한 값을 구하여 설계에 반영하고 있다.

• Korea Petroleum Association Journal
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• no.10 s.140
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• pp.109-115
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• 1992

1962년 10월 13일에 출범한 주식회사 유공은 국내 최초의 정유 회사로서 한국 경제 발전을 주도하였으며 에틸렌ㆍ프로필렌ㆍBTX등 석유화학 기초분야의 선도기업으로서 업계를 이끌어 왔다. 1980년 선경 그룹의 일원이 됨으로써 순수 민간 기업으로 새롭게 태어난 유공은 기존의 한정된 사업 영역에서 탈피, 끊임없이 기업변신을 추진하여 왔으며, 그동안의 성장ㆍ발전과 성공적 사업 추진에 힘입어「에너지ㆍ화학을 중심으로 끝없이 혁신ㆍ발전하는 세계 인류 기업」이라는 장기 기업 목표를 설정하고 새로운 세기를 열어 가고 있다. 1992년 10월 13일. 창사 30주년을 맞아 유공 30년 발전약사를 정리해 본다. <유공 홍보실 제공>