A combustion chamber spanning support plate

Abstract

The invention discloses a spanning support plate of a combustion chamber, which relates to the technical field of transcendental ramjet engines. The key points of the technical solution are: a support plate body installed in the middle of the combustion chamber, the support plate body includes a first inclined surface close to the upstream direction of the airflow and The second slope is located on the upper plane and the lower plane of the straight section of the support plate body, and the third slope and the fourth slope are close to the downstream direction of the airflow; the end of the support plate body close to the upstream direction of the airflow is composed of the first slope and the second slope The first cone angle; the end of the support plate body close to the downstream direction of the air flow is formed by the third inclined plane and the fourth inclined plane; the second cone angle is formed; the center of the support plate body is provided with an oil injection cavity. The middle part of the upper plane and the middle part of the lower plane are provided with injection holes communicating with the oil injection chamber. It is convenient to directly and quickly inject fuel into the middle of the combustion chamber, and at the same time, it can reduce the total pressure loss of the airflow caused by the intrusion of the support plate into the combustion chamber, prolong the residence time of the fuel in the combustion chamber, improve the mixing efficiency of fuel and airflow, and enhance the ignition capacity of the combustion chamber .

Description

technical field [0001] The present invention relates to the technical field of transcendental ramjet, more specifically, it relates to a spanning support plate of a combustion chamber. Background technique [0002] As a propulsion power device, the scramjet can economically and reliably achieve the goal of hypersonic flight. A scramjet generally includes components such as an intake port, an isolation section, a combustion chamber, and an exhaust nozzle. [0003] The function of the combustion chamber is to realize fuel injection, ignition and combustion. The existing fuel injection methods can be divided into two categories according to the different injection positions: wall injection and intrusive injection. Wall injection generally uses small holes arranged in the wall of the engine to inject fuel into the combustion chamber. Intrusive injection often uses devices such as struts and support plates to inject fuel directly into the middle of the combustion chamber. The...

AI Technical Summary

Problems solved by technology

However, intrusive injection uses devices such as struts / supports with high resistance, which will cause a strong total pressure loss in the airflow, thereby reducing the propulsion efficiency of the engine

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