Modular thrust chamber verification structure and verification method for pintle injector optimization

Abstract

In order to solve the technical problems that in the process of developing a thrust chamber of a pintle injector at present, multiple influence factors need to be considered when high combustion efficiency and reliable cooling performance of a body are considered, the verification workload is very large, the number of times of required test run is large, the development cost is high, and the development period is long, the invention provides a thrust chamber for a pintle injector. The invention provides the modularized thrust chamber verification structure and verification method for pintle injector optimization. The verification structure replaces an integrated structure of the thrust chamber, rapid verification of multiple influence factors is achieved by designing cooling rings of different styles and replacing adjusting rings and extension rings of different thicknesses, the development period of the pintle injector thrust chamber is remarkably shortened, the technical state of the thrust chamber is rapidly determined, and the reliability of the thrust chamber is improved. In addition, multi-factor direct comparison can be completed under the same combustion field condition, interference caused by product assembly states and measurement system fluctuation can be eliminated, and the comparison result is high in accuracy and more credible.

Description

technical field [0001] The invention belongs to the technical field of liquid rocket engines, and in particular relates to a modular thrust chamber verification structure and a verification method for the optimization of a needle-bolt injector. Background technique [0002] The concept of the needle injector has been proposed in the 1950s and is currently widely used in liquid rocket engines with variable or fixed thrust. Represented by TRW, after nearly 60 years of technological development, a number of pin-bolt-type fixed thrust and variable-thrust liquid rocket engines have been developed, of which more than 60 pin-bolt engines have been tested by hot tests. Since the 1990s, it has focused on the research of high-thrust needle bolt engines such as liquid oxygen / liquid hydrogen and liquid oxygen / kerosene, and has achieved remarkable results in low-temperature propellant applications and low-cost solutions. The needle-bolt injector has a simple structure, high structural r...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that in the current development of the thrust chamber of the pintle injector, when taking into account high combustion efficiency and reliable cooling of the body, multiple influencing factors need to be considered, the workload of verification is very large, and many test runs are required. Due to the technical problems of high cost and long development cycle, a modular thrust chamber verification structure and verification method for pintle injector optimization are provided

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