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Combustion and Performance Efficiency of Boron Carbide Fuel in Solid Fuel Ramjet  

Lee, Tae-Ho (국방과학연구소 추진기관부)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.8, no.2, 2004 , pp. 95-101 More about this Journal
Abstract
An experimental investigation was conducted to investigate the effects of the equivalence ratio and air mass flux on the combustion efficiency in a solid fuel ramjet used fuel grains which were highly loaded with boron carbide. Combustion efficiency increased with increasing equivalence ratio (grain length), and decreasing air mass flux. Higher inlet air temperature produced higher combustion efficiencies, apparently the result of enhanced combustion of the larger boron particles those burn in a diffusion controlled regime. Short grains which considered primarily of the recirculation region produced larger particles and lower combustion efficiencies. The result of the normalized combustion efficiency increased with inlet air temperatures coincident with the result of the Brayton cycle thermal and the total efficiency relating to the heat input.
Keywords
Equivalence Ratio; Inlet Temperature; Recirculation Region; Brayton Cycle;
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  • Reference
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