Review of baffles for application to liquid rocket engines
Combustion instabilities are unfavorable in liquid rocket engines,and the incurred large-amplitude pressure/heat oscillations would introduce many detrimental outcomes,such as combustor erosion and structure vibration.To suppress these thermoacoustic oscillations,baffles have been used in the injector plate,and this technique showed a large potential for its simple structure and good damping capability.In this work,the influence of the baffles design on the combustion process and acoustic properties in the combustor are analyzed.Emphasis is placed on the effects of baffles'structure(the baffle pattern,blade length,and blade number.)on the damping effects of combustion oscillations.In addition,based on the current research progresses,some suggestions for the further development of baffles are put forward.
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