국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Combustion Characteristics of Metallized Hydrocarbon Fuels
저자	Hiroshi SAKAMOTO, Kazuo SATO, Nobuyuki YATSUYANAGI
Keyword	Metallized fuel; Tripropellant; Hydrocarbon fuel; Specific density impulse
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr01224.pdf?id=NALTR0001224
보고서번호	NAL TR-1224
발행년도	1994.1
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	In this paper the combustion performance of tripropellants consisting of LOX/hydrocarbon fuel and solid metals was evaluated.Thermochemical calculations were performed to evaluate specific impulse,specific density impulse and the combustion properties of LOX/kerosene/Be,LOX/kerosene/B,LOX/kerosene/Mg and LOX/kerosene/Al tripropellants.The specific impulse advantage of LOX/kerosene/Be over bipropellants was demonstrated,and consideration of specific density impulse justifies the use of heavier elements such as aluminum,magnesium and boron.Experiments were conducted to evaluate the combustion characteristics of oxygen/kerosene/aluminum tripropellants using single-element injectors and a water-cooled combustion chamber.Two kinds of unlike-impinging element (F-O-F) injectors were tested using liquid oxygen and one kind of coaxial injector was tested using gaseous oxygen.The fuel used was a kerosene/aluminum mixture which consisted of aluminum particles,with a meam diameter of 1.9～3.1μm in mean diameter,spended in kerosene fuel.The aluminum concentration in the total fuel mass varied from approximately 1 to 20 Wt％.The tested combustion pressure was 4MPa,and the mixture ratios were from 1.4 to 5.1. Experimental results demonstrated a significant improvement in combustion stability with the use of the impinging type of injector,and an increase in C* efficiency was achieved the coaxial type injector by the addition of aluminum to kerosene fuel.