Discharging device and method of remaining propellant in propellant cross conveying pipeline

Abstract

The invention relates to the technical field of aerospace, and discloses a discharging device and method of a remaining propellant in a propellant cross conveying pipeline. The device is characterizedin that a first branch is connected to a booster stage fuel pipeline, a second branch is connected to a core stage fuel pipeline, the first branch and the second branch are connected through a fuel connecting separating device, a third branch is connected to a booster stage oxidizing agent pipeline, a fourth branch is connected to a core stage oxidizing agent pipeline, the third branch and the fourth branch are connected through an oxidizing agent connecting separating device, the first branch is provided with a fuel discharging pipeline, and the third branch is provided with an oxidizing agent discharging pipeline. According to the provided discharging device and method of the remaining propellant in the propellant cross conveying pipeline, the fuel discharging pipeline and the oxidizingagent discharging pipeline are arranged, remaining fuel and a remaining oxidizing agent in the pipelines are discharged, separation of a booster stage is carried out, the connecting separating devices are subjected to unlocking separating under the dry working condition, and the reliability and the safety of the conveying pipeline can be improved.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a device and method for discharging excess propellant in a propellant cross-transport pipeline. Background technique [0002] Liquid propellants are widely used in aerospace. The propellants of the booster stage and the core stage of traditional liquid launch vehicles are used separately. Once the power of the booster stage is shut down, the propellant in the booster stage storage tank will be discarded. The remaining propellant will form additional dead weight and may cause a total The center of mass of the arrow shifted drastically, resulting in the failure of the launch mission. In the prior art, there is a pipeline system that proposes a reasonable sharing of propellant between the booster stage and the core stage engine. When the propellant of the booster stage is used up, the booster stage and the core stage can be separated to reduce the dead weight, but there is no so...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a device and method for discharging residual propellant in the propellant cross-transport pipeline, which is used to solve or partially solve the existing pipeline system for transporting propellant, which is prone to explosion when the booster stage pipeline is separated. Problems that affect the flight of the rocket body

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