The severe erosion in the bicomponent propellant heat sink thrust chamber of hydrogen peroxide and kerosene through the firing test is studied. As shown in the results of CT scanning, the copper lining is burned through to expose a large gap between the copper lining and the stainless-steel shell. The erosion area of cross-section of copper lining decreases as the distance from the chamber head along the axial direction increases. During the firing test, the color of flame changes to green at 6.78s and after 9.34s the flame continues to be green. The temperature of the flame is obviously higher than that of normal combustion flame. It is considered as the flame color reaction of copper. The temperature of the burning gas reaches about 2640 K. Therefore, there is a phase change of copper lining, i.e., the loss of liquid copper on the surface under short-time operating conditions. Due to incomplete catalysis, the liquid hydrogen peroxide accumulates in the combustion chamber and is catalyzed by pure copper. It will cause the inner wall to be burned through to expose a hole. Thus, it is significant to adopt a catalytic bed of fast response and high efficiency, optimize the time sequence of pulse test, and select the compatible materials instead of copper for the chamber lining, for the purpose of improving the stability of heat sink thrust chamber. This paper is designed to break through the key technology of multiple starts and long-time operating conditions of hydrogen peroxide/kerosene bipropellant engine.

通过燃烧试验研究了双组分推进剂散热器推力室中过氧化氢和煤油的严重侵蚀。CT扫描结果显示，铜内衬被烧穿，铜内衬与不锈钢外壳之间暴露出很大的缝隙。衬铜截面的冲蚀面积随着与室头轴向距离的增加而减小。在燃烧测试过程中，火焰颜色在 6.78s 时变为绿色，9.34s 后火焰继续呈绿色。火焰的温度明显高于正常燃烧火焰的温度。它被认为是铜的火焰颜色反应。燃烧气体的温度达到2640K左右。因此，存在铜衬的相变，即，短时间操作条件下表面液态铜的损失。由于催化不完全，液态过氧化氢在燃烧室中积聚，被纯铜催化。它会导致内壁被烧穿，露出一个洞。因此，采用响应速度快、效率高的催化床，优化脉冲测试时序，腔内衬选用相容材料代替铜，对于提高散热器推力腔的稳定性具有重要意义。 . 该论文旨在突破过氧化氢/煤油双组元发动机多次启动和长时间工况的关键技术。液态过氧化氢积聚在燃烧室中，由纯铜催化。它会导致内壁被烧穿，露出一个洞。因此，采用响应速度快、效率高的催化床，优化脉冲测试时序，腔内衬选用相容材料代替铜，对于提高散热器推力腔的稳定性具有重要意义。 . 该论文旨在突破过氧化氢/煤油双组元发动机多次启动和长时间工况的关键技术。液态过氧化氢积聚在燃烧室中，由纯铜催化。它会导致内壁被烧穿，露出一个洞。因此，采用响应速度快、效率高的催化床，优化脉冲测试时序，腔内衬选用相容材料代替铜，对于提高散热器推力腔的稳定性具有重要意义。 . 该论文旨在突破过氧化氢/煤油双组元发动机多次启动和长时间工况的关键技术。腔内衬选用相容材料代替铜，以提高散热器推力腔的稳定性。该论文旨在突破过氧化氢/煤油双组元发动机多次启动和长时间工况的关键技术。腔内衬选用相容材料代替铜，以提高散热器推力腔的稳定性。该论文旨在突破过氧化氢/煤油双组元发动机多次启动和长时间工况的关键技术。