Heat-insulating Material Anti-overload Performance Opposite Experiment

摘要：

For the request of improve performance of solid rocket motor, highly aluminum-contained composite propellants were adopted in the propulsion system of missile, but it would generate dense high temperature two-phase flow on local area for maneuver of missile, which would deteriorate working condition of insulator and even lead to propulsion system failure. To ensure a normal operation of propulsion system, it is necessary to select appropriate insulating material to restrain potential danger of the typical two-phase flow posed on motor. Three different insulating materials are investigated for ablation characteristic under high acceleration condition and structures of carbonization layers are analyzed by scanning electron microscopy. Base on the ablation rate and cross section character of insulating material, analyze the image of carbonized layer from the serious ablation position by SEM and make preliminary theoretic of ablation characteristic of experimental insulating material. The result show that: 1) Under the same experimental condition, the ablation rate ranks as follow: No. 2 insulating material (EPDM /Aramid Fiber, lower fiber and SiO2 content) < No. 1 insulating material (EPDM /Aramid Fiber, higher fiber and SiO2 content) < No. 3 insulating material (NBR /Asbestos Fiber); 2) Frame construction shaped from in situ carbonization of organic fiber plays certain role in ablation restraint, and appropriate SiO2 content and fiber quantity will enhance the anti-ablation ability for material.

关键词： solid propellant rocket motor (SRM) insulator ablation particle erosion experimental investigation

作者: Xu Kaimin Liu Yang Li Jiang Liu Shichang

作者单位: Combustion, Flow and Heat Structure National Key Laboratory, Northwestern Polytechnical University, Combustion, Flow and Heat Structure National Key aboratory, Northwestern Polytechnical University, X

会议类型: 国际会议

会议名称: 2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)

会议地点: 西安

会议语种:英文

页码: 873-876

在线出版日期: 2010-09-01（万方平台首次上网日期，不代表论文的发表时间）