典型文献
Ablation characteristics of insulator under high-temperature gas dual-pulse erosion
文献摘要：
This study numerically simulated and investigated the flow field characteristics of a typical dual-pulse solid rocket motor with a soft pulse separation device through thermal insulation ablation under high-temperature dual-pulse erosion.The ablation rate of ethylene-propylene-diene monomer(EPDM)insulator was measured after the experiment.Experimental results were analyzed through scanning electron microscopy and microcomputed tomography.The ablation mechanism of the EPDM insulator under the operation conditions of a dual-pulse solid rocket motor was evaluated by analyzing the results.The results reveal that the internal flow field of the motor with a soft pulse separation device is uniform.The original charred layer existing on the EPDM insulator surface in the first pulse combustor is the decisive factor affecting the final ablation rate of the dual-pulse motor during the second pulse operation,and the ablation characteristic region is easily formed with the exfoliation of the charred layer.The ablation rate difference of the insulator increases with gas velocity.
文献关键词：
中图分类号：
作者姓名：
Yang Liu;Xiao-cong Li;Peng-fei Zhu;Kun Xi
作者机构：
Northwestern Polytechnical University,710072,Xi'an,PR China;Department of Aerospace Propulsion Technology,Science and Technology on Combustion,Internal Flow and Thermal-Structure Laboratory,Shaanxi,PR China;Xi'an Modern Chemistry Research Institute,710065,PR China
文献出处：
引用格式：
[1]Yang Liu;Xiao-cong Li;Peng-fei Zhu;Kun Xi-.Ablation characteristics of insulator under high-temperature gas dual-pulse erosion)[J].防务技术,2022(10):1875-1885
A类：
microcomputed,charred
B类：
Ablation,characteristics,insulator,under,high,temperature,gas,dual,pulse,erosion,This,study,numerically,simulated,investigated,flow,field,typical,solid,rocket,motor,soft,separation,device,through,thermal,insulation,ablation,rate,ethylene,propylene,diene,monomer,EPDM,was,measured,after,experiment,Experimental,results,were,analyzed,scanning,electron,microscopy,tomography,mechanism,operation,conditions,evaluated,by,analyzing,reveal,that,internal,uniform,original,layer,existing,surface,first,combustor,decisive,affecting,final,during,second,region,easily,formed,exfoliation,difference,increases,velocity
AB值：
0.490798
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