A deflector and injector capable of improving the synchronization of propellant filling

Abstract

The invention relates to a deflector and an injector that can improve the synchronization of propellant filling, so as to solve the problem that the deflector in the fuel chamber of the existing injector makes the fuel filling one-way and has a long stroke, resulting in synchronous filling of the injector. The technical problem of reduced performance and reduced working stability at start-up. The deflector includes a deflector body, a central hole arranged in the central area of ​​the deflector body, a plurality of side area flow holes uniformly distributed around the edge area of ​​the flow deflector body, and a plurality of nozzle installation holes, and a plurality of side area flow holes The ratio of the total area to the area of ​​the center hole is 20% to 30%; the injector includes the injector surface, multiple nozzles arranged on the injector surface, the fuel chamber and the above deflector, the deflector is installed on the fuel The fuel chamber is divided into an upper fuel chamber and a lower fuel chamber, and a plurality of nozzles respectively penetrate the fuel chamber and pass through corresponding nozzle mounting holes in the fuel chamber. The invention can take into account both the cooling of the injector face and the speed of fuel filling.

Description

technical field [0001] The invention relates to a deflector and an injector which can improve the synchronization of liquid propellant filling. The deflector is applied in the fuel cavity of the injector, and the injector is applied to the thrust chamber or the gas generator of the engine, especially It is a liquid rocket engine thrust chamber that requires high propellant filling synchronization. Background technique [0002] Liquid rocket engine thrust chamber injectors are the main components for atomizing and mixing liquid propellant components. The working condition of the injector largely determines the degree of complete combustion of the propellant and the stability of the working process of the thrust chamber. On the one hand, the synchronicity of the liquid propellant filling process in the injector affects the ignition quality of the thrust chamber and the working stability at start-up; cooling to ensure its working reliability. Therefore, improving the filling...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the deflector of the fuel chamber of the existing injector makes the fuel filling one-way and the stroke is long, which leads to the decrease of the injector filling synchronization and the work stability during start-up, and proposes a Deflector and injector that can improve the synchronization of propellant filling. The deflector can improve the filling synchronization of liquid propellant in the injector, taking into account the flow rate of the fuel lower chamber, thereby increasing the cooling margin of the injector surface

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