发动机燃烧室热防护系统电弧加热直连式试验技术  

Arc-heated Direct-connected Testing Technology Investigation on Scramjet Combustor Thermal Protection System

作　　者：涂建强[1] 陈连忠[1] 马雪松[2] 陈海群[1] 王琴[2] 

机构地区：[1]中国航天空气动力技术研究院,北京100074 [2]北京动力机械研究所,高超声速冲压发动机技术国防重点实验室,北京100074

出　　处：《导弹与航天运载技术》2013年第6期10-14,共5页Missiles and Space Vehicles

摘　　要：基于原有的电弧加热直连式试验燃烧室性能测试平台,阐述了结合燃油燃烧试验方法,发展了对主动和被动热防护冲压发动机燃烧室热防护性能进行长时间考核的新方法。根据主动冷却燃烧室的试验要求,改进燃油供给控制系统,使其在出口管路压力升高时能长时间稳定供给燃油;采用B型热电偶、隔热毡和高温合金钢卡环安装方法对燃烧室外壁面温度进行接触式测量,获取燃烧室的温度分布;采用轴向不限位的支撑和位移传感器测量燃烧室的轴向变形情况。通过以上3方面的测量技术创新,燃烧室热防护性能考核的电弧加热直连式试验技术能够对发动机燃烧室热防护性能进行千秒量级的考核,并且能够长时间获取燃烧室的燃油供给量、壁面温度分布和轴向变形等数据。Based on the original arc-heater direct-connected scramjet combustor working performance test facility, a new method, which is used to test the long-time thermal protection performance of the active and passive scramjet combustor thermal protection system （TPS）, has been developed. According to the active scramjet combustor test demand, the fuel supply and control system has been improved, which can steadily supply fuel when the exit pressure is increasing. The temperature distributing of the scramjet exterior wall has been measured by the B-type thermocouples, heat-insulation felt and high-temperature alloy steel ring. The axial deformation of the scrarnjet has been gained by the axial-free supports and displacement sensors. With the three parts improvement, the arc-heater direct-connected testing technology of the scramjet combustor TPS thermal protection performance can last for thousand seconds. And a mass of the scramjet combustor thermal protection performance data in the normal work situation, such as the fuel flux, the exterior wall temperature distributing and the axial deformation, can be obtained for long time.

关 键 词：超燃冲压发动机 电弧加热设备 直连式试验 热防护系统 

分 类 号：V43[航空宇航科学与技术—航空宇航推进理论与工程]