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推进剂利用系统控制推进剂流量以减少推进剂剩余量(发动机关机时贮箱中剩余的液氧和液氢量)。半人马座级推进剂利用系统的液量差额电桥用来比较液氧和液氢的液量,使得系统能够修正两者的混合此偏差。本文对液量差额电桥进行了分析,以确定电桥的灵敏度,影响电桥平衡的因素和遥测电路故障对电桥的影响。分析结果表明: (1)电桥的输出灵敏度符合规定要求。 (2)规定的参数偏差对电桥的平衡没有大的影响。 (3)除主要电桥出故障外,遥测电路故障对电桥平衡也没有大的影响。电桥的设计是合理的,但由于给液量读出电路供电的400赫电源出故障而影响主电桥的情况除外。
Propellant utilization The system controls the flow of propellant to reduce the remaining amount of propellant (the amount of liquid oxygen and liquid hydrogen remaining in the tank when the engine is shut down). Centaurus propellant use system of liquid difference bridge is used to compare the amount of liquid oxygen and liquid hydrogen, allowing the system to correct the mixture of these two deviations. In this paper, the fluid balance bridge was analyzed to determine the sensitivity of the bridge, the factors that affect the balance of the bridge and the influence of the fault of the telemetry circuit on the bridge. The analysis results show that: (1) The bridge output sensitivity meets the specified requirements. (2) The specified parameter deviation has no significant effect on the balance of the bridge. (3) In addition to the main bridge failure, telemetry circuit failure on the balance of the bridge has no major impact. The design of the bridge is reasonable, except in the case of a failure of the 400 Hz power supply to the fluid sensing circuit that affects the main bridge.