Method for determining starting scheme of catalytic bed of hydrogen peroxide rocket engine

Abstract

The invention provides a method for determining a starting scheme of a catalytic bed of a hydrogen peroxide rocket engine. The method comprises the steps of carrying out a bubble sheet test, designing a starting time sequence, carrying out a catalytic test, correcting the starting time sequence and obtaining the starting scheme. The decomposition condition of hydrogen peroxide in the rocket engine is simulated by using the bubble sheet test, the starting time sequence is designed for a valve according to the result of the bubble sheet test, a catalytic test is performed in the rocket engine according to the starting time sequence, and then the starting time sequence corresponding to the next group of catalytic tests is corrected according to the result of the catalytic test, so that the starting time sequence is gradually improved. Finally, the last starting time sequence is corrected again and serves as a starting scheme. According to the process, a starting scheme completely matched with the catalytic bed of the rocket engine can be designed in a targeted mode, the starting speed of the catalytic bed is increased, the situation that a combustion chamber in the ignition stage has an over-high ignition pressure peak is avoided, and then the detonation danger is eliminated.

Description

technical field [0001] The invention relates to the field of rocket engines, in particular to a method for determining the start-up scheme of a catalytic bed of a hydrogen peroxide rocket engine. Background technique [0002] As a propellant, hydrogen peroxide has excellent characteristics such as greenness and non-toxicity, so it is widely used in rocket engines, and its main function is to act as an oxidant. At present, a series of studies have been done on the ignition scheme of the rocket engine using hydrogen peroxide as the propellant, and catalytic ignition as one of the ignition schemes has also been widely adopted and widely used. [0003] Compared with other schemes, the catalytic ignition scheme uses a catalytic bed, and liquid hydrogen peroxide is rapidly decomposed into water and oxygen when flowing through the catalytic bed, and is added to the combustion chamber in the gas phase at the outlet of the catalytic bed. Liquid direct injection is more conducive to ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem in the prior art of failing to design a start-up scheme that fully matches the catalytic bed, the purpose of the present invention is to provide a method for determining the start-up scheme of a hydrogen peroxide rocket engine catalytic bed

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