Method and device for improving performance of hydraulic management system of spacecraft propulsion system

Abstract

The present invention provides a method and device for improving the performance of the hydraulic management system of the spacecraft propulsion system, comprising the following steps: Step 1, connecting two liquid circuit normally closed circuits in parallel downstream of each storage tank of the propulsion system using parallel storage tanks Explosion valve; step 2, arrange two temperature measurement points near the electric explosion tube of the main electric explosion valve; step 3, before filling the liquid pipeline, check all the temperature measurement points on the main electric explosion valve Start temperature collection; step 4, when filling the liquid pipeline, first detonate the main electric explosion valve downstream of the parallel storage tank, and simultaneously interpret the shell temperature of the liquid circuit normally closed electric explosion valve; step 5, if a certain electric explosion valve is measured If the temperature of the two measuring points on the explosion valve has changed significantly, it is determined that the electric explosion valve has successfully detonated, otherwise, it is considered that the electric explosion valve has not successfully detonated; , then send an instruction in time to detonate the electric explosion valve connected in parallel with it.

Description

technical field [0001] The invention relates to a method for supplying a propellant of a dual-component propulsion system of a spacecraft, in particular to a method and a device for improving the performance of a liquid path management system of a spacecraft propulsion system. Background technique [0002] In the dual-component propulsion system of spacecraft, the combination of methylhydrazine / nitrogen tetroxide pyrophoric propellant is usually used. These two fuels are liquid at room temperature and have the characteristics of spontaneous combustion, explosion, and toxicity after mixing, so leakage is not allowed . If the oxidant and fuel contact in the non-working state, they will directly burn and explode, which poses a great threat to the safety of products, equipment and personnel on the ground. Therefore, various safety measures are attached great importance to in use. In order to improve the safety and reliability during propellant filling, during storage after fill...

AI Technical Summary

Problems solved by technology

In order to eliminate the single-point failure that the electric explosion valve cannot be opened with a small increase in the structural mass, a bridge electric explosion valve is added, that is, plan E. However, it is found in actual use that if a certain electric explosion valve does not detonate normally , it cannot meet the requirement of balanced discharge accuracy of parallel storage tanks

In order to pursue higher reliability, plan F is adopted in some occasions. In actual use, if high balanced discharge accuracy is required, all parallel electric explosion valves should be detonated or only one electric detonation valve downstream of each storage tank should be detonated (taken 1), but in fact, there is no guarantee of 100% successful detonation

If a certain electric explosion valve does not detonate normally, when the proportion of the electric explosion valve flow resistance in the hydraulic system cannot be ignored, it is impossible to solve the problem of high requirements on the balanced discharge accuracy of parallel storage tanks and the system mixing ratio accuracy

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