发动机气瓶热防护产品绝热性能评定研究  

The Evaluating Research on Heat-insulating Property of Thermal Protection Products Used on the Engine's Gas Cylinders

作　　者：刘建方[1] 胡坚勇[1] 孙慧娟[1] 李明伟[2] 

机构地区：[1]北京航天动力研究所,北京100076 [2]哈尔滨工业大学,哈尔滨150001

出　　处：《宇航计测技术》2017年第2期26-29,共4页Journal of Astronautic Metrology and Measurement

摘　　要：通过批抽检热真空试验,能够评定发动机气瓶热防护产品的绝热性能,由于试验设备和试验工艺过程对产品温升会产生巨大影响,依据绝热材料导热系数测试方法,在试验方法不变的条件下,提出新的试验评定要求:稳态过程中产品温升速率。新的产品测试评定要求,能够客观准确的评定产品的隔热性能,排除设备和工艺过程对评定结果的影响。此评定方法也可用于形状不规则、厚度不一致的整件产品绝热性能评定。The heat insulating property of thermal protection products used on the enginers gas cyl-inders is evaluated through sampling test under thermal vacuum environment. The product temperature rise which is evaluation requirement is affected seriously by the equipment and engineering process. Ac-cording to the test method in the heat conductivity coefficient of the insulation material, temperature rising rate as a novel test requirement of evaluating the property of the products is acquired under the same tes-ting process. This method can evaluate heat-insulating property accurately and objectively, and it can e-liminate the interference factors in the equipment and engineering process. The heat insulating property of out- of-shape thermal protection products with non-uniform thickness also can be evaluated by the method.

关 键 词：复合结构 热防护 绝热性能 产品测试 

分 类 号：V434.3[航空宇航科学与技术—航空宇航推进理论与工程]