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Combustion chamber of a sub-combustion ramjet engine

A sub-combustion ramjet and combustion chamber technology is applied in the field of sub-combustion ramjet combustion chambers, which can solve the problems of difficult ignition and stable combustion of sub-combustion ramjets, and achieve convenient and rapid participation in combustion, good mixing effect, and prolonged residence time. Effect

Inactive Publication Date: 2017-08-25
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the difficult problem of sub-combustion ramjet ignition and stable combustion

Method used

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  • Combustion chamber of a sub-combustion ramjet engine
  • Combustion chamber of a sub-combustion ramjet engine
  • Combustion chamber of a sub-combustion ramjet engine

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Embodiment Construction

[0024] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise stated, "a plurality" means two or more; the terms "upper", "lower", "left", "right", and "internal" "," "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and The description is simplified, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addi...

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Abstract

The invention belongs to the technical field of sub-combustion ramjet engines, and discloses a combustion chamber of sub-combustion ramjet engines, which include sequentially arranged and sequentially connected: an isolation section, a sudden expansion section, a concave cavity, an equal straight section and an exhaust nozzle; the isolation The distance between the respective bottom plates of the section, the sudden expansion section, and the concave cavity increases sequentially from the top; the support plate structure is provided with a support plate cavity, and the support plate structure is provided with a fuel inflow port, a high-temperature bleed air port and a A plurality of injection holes communicated with the cavity of the support plate. The invention adopts the combination of the sudden expansion section, the concave cavity and the support plate structure, so that the mixing effect of the fuel and the incoming air is good; the support plate structure is arranged obliquely, and the fuel mixture sprayed by the support plate structure has a wide distribution range in the flow channel; The fuel and the high-temperature bleed air flow are pre-contacted in the support plate cavity, so that the fuel can gain energy, which is convenient and fast to participate in combustion, and the ignition speed is fast; the concave cavity can form a continuous and stable flame, which is helpful for spreading and stabilizing the flame.

Description

Technical field [0001] The invention relates to the technical field of sub-combustion ramjet engines, in particular to a sub-combustion ramjet engine combustion chamber. Background technique [0002] The ramjet is an air jet engine that relies on the deceleration and supercharge of the high-speed oncoming air flow. Its structure is simple. There are no complicated rotating parts like the compressor and turbine of the turbojet engine. The air entering the engine is compressed by high-speed Obtained by stagnation of airflow (ram pressurization). Ramjets can be divided into two types: sub-combustion ramjet (subsonic combustion ramjet) and supersonic ramjet (supersonic combustion ramjet). [0003] The combustion chamber is the core component of the sub-combustion ramjet engine. Since the sub-combustion ramjet engine works at high altitude, the ambient temperature is low, the air density in the combustion chamber is very low, and the airflow velocity at the inlet of the combustion cham...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/42
Inventor 林鹏方祥军黎军王霄王亚妹陶佳欣
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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