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An Analysis on Combustion Instability in Solid Rocket Motor of 4 Slotted Tube Grain  

Cho, Ki-Hong (서울시립대학교 화학공학과, 국방기술품질원 유도방공팀)
Kim, Eui-Yong (서울시립대학교 화학공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.15, no.4, 2011 , pp. 48-56 More about this Journal
Abstract
A Possibility of combustion instability on longitudinal mode has a high level at large scale of L/D. Solid propellant has a metal particle and a grain of control to pressure oscillation. Solid rocket motor in slotted-tube grain controls pressure oscillation of longitudinal mode. Slotted-tube grain restrains longitudinal 1st pressure oscillation. But cavity volume of aft. insulation ablation amplifies 2nd pressure o scillation by vortext shedding. A study has suppressed combustion instability and vortex shedding by modified 4 slotted tube solid rocket motor design.
Keywords
Solid Rocket Motor; Combustion Instability; Spectrum Analysis; Acoustic Modal Analysis; Vortex Shedding;
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