试车台氧化剂系统增压能力影响因素分析

试车台进行改造后,管路和容器参数都发生了变化,试车过程中需在要求时间内完成发动机氧化剂入口压力从前稳段升压至过载段。首次试车过程中由于贮箱增压计算出现误差,导致氧化剂升压过程中增压阀门多次动作。为避免升压过程中增压阀门的多次动作,获得试车台的实际增压能力,对其影响因素及试车数据进行了分析,修正了调整计算过程。试验结果表明:调整计算正确,改进措施有效,满足了试验任务要求。

Analysis on pressurization ability of oxidizer system for test stand

Since the parameters of pipes and containers were changed after the test-stand technological renovation for overload test, the inlet pressure of the oxidizer was required to be raised from the steady phase to the overload phase in the process of engine test running within a specific time period. An error was made in the pressurization calculation for the tank during the first test. This made the pressurization valve act several times. In order to get rid of this phenomenon and get the actual pressurization ability of the test stand, the influencing factors and the test data were analyzed and calculation process was adjusted to make the tests to be successfully conducted. The result indicates that the method is correct.