Spacecraft propellant in-orbit filling system and spacecraft propellant in-orbit filling method

Abstract

The invention discloses a spacecraft propellant in-orbit filling system and a spacecraft propellant in-orbit filling method. A technology of performing primary exhaust and then performing pressurized filling is adopted, a target conduit head and a filling conduit head do not need simultaneous connection of a gas path and a liquid path, and only a single liquid path is used for connection, so that a docking mechanism is simplified; a supplementary spacecraft is capable of performing pressurized filling without a mounting pump, not only can an attitude disturbing torque generated by rotation of a motor in the pump be avoided, but also the boost pressure during filling is reduced, and the task reliability is improved; before filling, a measure of performing pressure relief on the target spacecraft till reaching a pressure which is below a propellant saturated vapor pressure is adopted, thereby ensuring that the filling rate of the target spacecraft achieves a higher level; in addition, the system has a reusable characteristic; the supplementary spacecraft can be used for performing in-orbit supplement on multiple targets or one target for multiple times, so that a foundation for further implementing in-orbit filling service is laid.

Description

technical field [0001] The invention discloses a propellant on-orbit filling system and method, in particular relates to a spacecraft propellant on-orbit filling system and method, and belongs to the field of aerospace technology. Background technique [0002] With the development of my country's aerospace technology, many expensive and valuable payloads are gradually applied to space platforms. Due to the limitations of its own conditions and the influence of the space environment, the space on-orbit system is often forced to terminate its use due to limited fuel without any supply and maintenance, and has to be remanufactured and launched to replace it. Necessary loss and waste. The method of prolonging the life of spacecraft in orbit by increasing the carrying capacity and increasing the amount of propellant carried blindly cannot fundamentally meet the requirements of future aerospace development, and will also bring many adverse effects. [0003] On-orbit refueling se...

AI Technical Summary

Problems solved by technology

Among them, the space fluid transmission technology is the key technology for on-orbit refueling. Since the aircraft is in a microgravity environment and is affected by factors such as liquid surface tension and aircraft attitude changes, the propellant and pressurized gas inside the tank can be used without propellant management. It is in a disordered state of gas-liquid mixing under normal conditions, and the on-orbit refueling service requires that a vapor-free single-phase liquid be transported from the supply spacecraft tank to the target spacecraft tank in a microgravity environment in a specific thermodynamic state. This makes the space fluid transport process very complicated

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