Real-time dynamic measurement method of rocket tank propellant dose

Abstract

The invention discloses a method for measuring the real-time dynamic state of rocket storage tank propellant amount. The method includes the following steps that a, a control valve controlling pressurizing gas in a pressurizing gas cylinder to enter a storage tank is closed, the pressure of a storage tank air cushion in the storage tank is measured through a storage tank pressure sensor, and a record is made; b, when air pressure is lowered to a certain degree, the pressure of the storage tank air cushion in the storage tank is measured through the storage tank pressure sensor, and a record is made; c, the volume of propellant flowing out of the storage tank in a time interval is measured through a flow meter; d, a mathematic model of a closed-opening system of the storage tank air cushion is established, and a relation formula between the size of the storage tank air cushion and the pressure of the storage tank air cushion, and a relation formula between the pressure changing amount of the storage tank air cushion and the size changing amount of the storage tank air cushion are obtained; e, after the measuring process is completed, the control valve controlling the pressurizing gas in the pressurizing gas cylinder to enter the storage tank is opened, and a user makes the pressurizing process recover. The method is high in measuring accuracy, does not need additional devices, is easy to operate and can meet the requirement that the pressurizing gas outside the spacecraft storage tank enters the storage tank.

Description

technical field [0001] The invention relates to the technical field of measuring the propellant dose of a spacecraft tank, in particular to a real-time dynamic measurement method for the propellant dose of a rocket tank. Background technique [0002] In the field of aerospace, sending every kilogram of payload into orbit requires expensive launch costs. Therefore, how to improve the rocket's carrying and launching capabilities and improve launch efficiency has become an important research topic. In the current launch mission, the propellant dose actually injected by the rocket is much more than the propellant dose required to send the payload into the predetermined orbit. Most of this surplus propellant is not used up after the mission ends, resulting in Great waste of load, if this part of surplus propellant is properly reduced, the rocket still has sufficient power to complete the entire mission, and the reduced mass of propellant can be used to carry more payload, which i...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a real-time dynamic measurement method for the propellant dose of rocket storage tanks, to solve the problem that most of the surplus propellants are not used up after the mission ends, resulting in a huge waste of load, and the surplus propellants still remain in the space after the mission ends. The final stage rocket is prone to technical problems such as explosion when it is in orbit with the final stage rocket when it is disturbed by the outside world

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