By employing the gaseoos oxygen as oxidizer and gaseoos hydrogen as fuel, hot-firing tests were performed for aerospike nozzle and dual bell nozzle test engines with al titude compensating features.

• 摘要采用气氧作氧化剂、气氢作燃料，对具有高度补偿特性的塞式喷管和双钟型喷管进行了点火热试。