Modularized heat-capacity type thrust chamber

Abstract

The invention relates to a modularized heat-capacity type thrust chamber comprising an injector assembly, a head top cap, a head bottom cap, a body cylinder section and a tail spray pipe, wherein the injector assembly, the head top cap and the head bottom cap are connected by adopting bolts to form the head of the thrust chamber; the body cylinder section is in a sectional type structure; and each section of the cylinder section, the tail spray pipe and the head of the thrust chamber are connected by adopting bolts. The head and the body of the thrust chamber, and the cylinder section and the spray pipe section are sealed in the mode of compacting expanded graphite sealing rings between a boss and a groove. The head can be made of a stainless steel material, the body cylinder section is made of red copper, and the spray pipe section is made of a high temperature-resistant material. By adopting the invention, when performing the experimental study on a rocket engine, experimenters can conveniently replace the module of the engine to change the studied parameter for carrying out comparative analysis, therefore, the cost is obviously reduced.

Description

【Technical field】 [0001] The invention relates to a heat capacity type thrust chamber with a modular structure. In particular, it relates to a liquid rocket engine thermal mass thrust chamber with variable injector, body length and nozzle geometry (shape and size). 【Background technique】 [0002] In the development process of the rocket engine thrust chamber, especially the development process of the injector as the main component of the thrust chamber, in a large number of initial research stages, in order to fully carry out the experimental research, it is often necessary to change the injector form, body shape, etc. The length of the nozzle and the geometry (shape and size) of the nozzle are used to obtain data under different working conditions for analysis and comparison. [0003] In the combustion test research on the ground, a heat capacity structure with a simple structure and easy to measure is generally used. However, when the head injector or body structure need...

AI Technical Summary

Problems solved by technology

Among them, the body and head of the single-nozzle thrust chamber adopt multi-part components, which can easily replace the injector, the length of the body and the nozzle part, but the connection form is completed by the integral hydraulic pressure at the front and rear of the thrust chamber, which requires The hydraulic press mechanism increases the cost and difficulty of the test, and when parts need to be replaced, the entire thrust chamber must be separated, and it is impossible to replace only one part while keeping the other parts connected.

Due to the complexity of the multi-nozzle structure, and the modular design method of the single-nozzle thrust chamber seen in the existing data, especially the design method of the head structure, it cannot be extended to the modular design of the multi-nozzle thrust chamber

In addition, there is no modular design structure of the overall thrust chamber in the design of the more expensive multi-nozzle thrust chamber

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