Novel binary plug type spray pipe

Abstract

The invention provides a novel binary plug type spray pipe. The novel binary plug type spray pipe comprises a supporting component, a cone body and a mixer (5). The supporting component is a cylindrical component which is formed by sequentially connecting a cylinder (1), a circular-to-square transition section (2) and a spray pipe contraction section (3) end to end, an inlet of the supporting component is round, and an outlet of the supporting component is rectangular. The mixer (5) is an annular component which is connected to the axis of an inner cavity of the supporting component in a sleeving mode. The cone body is a double-layer thin-wall component which is connected to the axis of an inner ring of the mixer (5) in a sleeving mode and is composed of a wedge-shaped plug cone and a central cone which is in butt joint with the wedge-shaped plug cone and has a circular section, and a supporting structure is arranged between the two thin walls of the central cone. According to the novel binary plug type spray pipe provided by the invention, the central cone and the plug cone are integrally designed, transition of the whole pneumatic flow path is smooth, and pneumatic loss is small; high-temperature components in an engine can be completely shielded, and the novel binary plug type spray pipe has a good stealth capability; and meanwhile, the novel binary plug type spray pipe has the advantages of being simple in structure, short, and low in weight.

Description

technical field [0001] The invention belongs to the field of aero-engines, and in particular relates to a novel binary plug nozzle. Background technique [0002] The traditional binary plug nozzle design adopts the independent design technology of the inner cone and the plug cone, which fails to achieve continuous and uniform distribution of the flow field in the entire nozzle, and the aerodynamic performance is poor. Stealth and radar stealth are less effective. There is a certain height difference between the inlet and outlet axes of the fixed and non-adjustable S-curved binary nozzle, which has good stealth performance, but has the problems of long length and heavy weight. Contents of the invention [0003] It is an object of the present invention to provide a novel binary plug nozzle which overcomes or alleviates at least one of the above-mentioned drawbacks of the prior art. [0004] The purpose of the present invention is achieved through the following technical so...

AI Technical Summary

Problems solved by technology

[0002] The traditional binary plug nozzle design adopts the independent design technology of the inner cone and the plug cone, which fails to achieve continuous and uniform distribution of the flow field in the entire nozzle, and the aerodynamic performance is poor. Stealth and radar stealth are less effective

There is a certain height difference between the inlet and outlet axes of the fixed and non-adjustable S-curved binary nozzle, which has good stealth performance, but has the problems of long length and heavy weight

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