Body module for hot test of rocket engine thrust chamber

Abstract

The invention provides a body module for a hot test of a rocket engine thrust chamber and solves the problems that in the existing rocket engine thrust chamber body design, it is difficult to meet the long-time hot test requirement, the machining is complicated, and the cost is high. The module comprises a main coolant inlet cavity, a main coolant outlet cavity, an auxiliary coolant cavity, a combustion chamber, a connecting part and a throat, wherein the combustion chamber, the connecting part and the throat are connected in sequence; the combustion chamber comprises a combustion chamber inner shell, a combustion chamber outer shell and a combustion chamber cooling channel arranged between the combustion chamber outer shell and the combustion chamber inner shell; the main coolant outlet cavity is formed in the front end of the combustion chamber outer shell and communicated with the combustion chamber cooling channel; the throat comprises a throat inner shell, a throat outer shell and a throat cooling channel arranged between the throat outer shell and the throat inner shell; the main coolant inlet cavity is formed in the rear end of the throat outer shell and communicated with the throat cooling channel; the connecting part is provided with a plurality of auxiliary coolant channels and connecting channels which are arranged in a staggered mode in the circumferential direction and are not communicated; and the auxiliary coolant cavity is formed in the outer wall of the connecting part and communicated with the inlet end of the auxiliary coolant channel.

Description

technical field [0001] The invention relates to the field of rocket engine thrust chamber hot test, in particular to a rocket engine thrust chamber hot test body module. Background technique [0002] During the rocket engine thrust chamber design test, it is often necessary to investigate the influence of different injector designs on the performance of the thrust chamber. In order to reduce the test cost, a detachable modular design is generally adopted, and the thrust chamber is divided into the body and the head containing the injector, so that different injectors can be replaced for testing. [0003] At present, there are usually two forms of body design: heat sink form and water cooling form. The heat sink form has the advantages of simple design and easy processing, but the disadvantages are also obvious. Since there is no active cooling, only relying on the heat capacity and high thermal conductivity of the material to withstand the high temperature environment of th...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of the body design of the existing rocket engine thrust chamber, which may only be able to perform a hot test within 5 seconds, it is difficult to meet the requirements of a long time hot test, or the design and processing are complicated and the cost is high, the present invention provides a Rocket engine thrust chamber hot test body module

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