Vertical recovery rocket tank pressure supplementing and air sealing system design

Abstract

The invention particularly relates to a vertical recovery rocket tank pressure supplementing and air sealing system design which comprises the following steps that an auxiliary power system is arranged, and the auxiliary power system sequentially comprises a gas cylinder, an auxiliary power system main path electromagnetic valve, a pressure reducing valve and a plurality of thrust chambers in the gas supply direction of a pipeline; a branch pipeline is arranged between the gas cylinder and the auxiliary power system main path electromagnetic valve, and gas is connected and supplied to a storage tank pressure supplementing system and a storage tank gas sealing system through a pipeline; in the flying process of a rocket, the gas cylinder supplies gas to the auxiliary power system to meet the attitude control requirement and meanwhile supplies gas to the storage tank gas sealing system to meet the gas sealing requirement, after the rocket lands, an electromagnetic valve on the storage tank pressure supplementing system is opened, and the pressure supplementing requirement of discharged propellants is met through residual gas of the gas cylinder of the auxiliary power system. Gas cylinders of the storage tank pressure supplementing and gas sealing systems do not need to be independently arranged, the power system is simplified, the total weight of the system is reduced, the gas utilization rate of the gas cylinder of the auxiliary power system is high, and the rocket efficiency is remarkably improved.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a pressure supplement and air seal system design for a vertical recovery rocket storage tank. Background technique [0002] For vertical recovery rockets, the propellant in the storage tank needs to be released after the rocket lands, which requires supplementary pressure on the storage tank; the pressurization of the domestic disposable cryogenic liquid launch vehicle storage tank generally adopts gas pressurization, self-generated booster Special gas cylinders are used to meet the pressure supplement requirements of the rocket storage tank; at the same time, the rocket needs to air seal the exhaust valve control chamber and exhaust pipe after flight and landing to prevent cold pumping caused by low-temperature propellants. Suction makes the exhaust valve and safety valve freeze, and the gas seal also needs the gas cylinder to provide gas; for the pressure supplement and gas ...

AI Technical Summary

Problems solved by technology

[0002] For vertical recovery rockets, the propellant in the storage tank needs to be released after the rocket lands, which requires supplementary pressure on the storage tank; the pressurization of the domestic disposable cryogenic liquid launch vehicle storage tank generally adopts gas pressurization, self-generated booster Special gas cylinders are used to meet the pressure supplement requirements of the rocket storage tank; at the same time, the rocket needs to air seal the exhaust valve control chamber and exhaust pipe after flight and landing to prevent cold pumping caused by low-temperature propellants. Suction makes the exhaust valve and safety valve freeze, and the gas seal also needs the gas cylinder to provide gas; for the pressure supplement and gas seal requirements of the rocket tank, if a special gas cylinder is installed, the system complexity will be increased, and the manufacturing cost will be increased. A new vertical recovery rocket tank supplementary pressure and air seal system scheme, with a simple gas supply system to meet the rocket tank supplementary pressure and exhaust valve control chamber, exhaust pipe air seal requirements, reducing the total weight of the system

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