A Novel Two-Element Unilateral Expansion Nozzle

A unilateral expansion nozzle and unilateral technology, applied in the direction of jet propulsion devices, machines/engines, etc., can solve the problems of weak stealth ability, increased nozzle height and length, and inability to effectively block the front-end hot-end components, etc., to achieve reliable The effect of high performance and simple structure
CN104033283BActive Publication Date: 2016-05-04AECC SHENYANG ENGINE RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AECC SHENYANG ENGINE RES INST
Publication Date
2016-05-04

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Abstract

The invention relates to a novel two-dimensional single-side expansion nozzle and belongs to the technical field of aero-engine nozzles. The nozzle comprises a round-to-square barrel (1), a single-side expansion wall (3), an adjustment plate (4), extension section side walls (5) and a shield swirling leaf-shaped structure (6) and is particularly characterized in that the front end of the round-to-square barrel (1) is connected with an engine and serves as a support member of the whole nozzle; the rear end of the round-to-square barrel (1) is connected with the single-side expansion wall (3), the adjustment plate (4) and the extension section side walls (5); and the shield swirling leaf-shaped structure (6) is fixedly mounted in the round-to-square barrel (1) and mainly used for shielding a hot end member at the front end of the nozzle to achieve a good invisibility function. The nozzle has the advantages that a structure size of the conventional two-dimensional single-side expansion nozzle is ensured, a defect of the poor invisibility function of the conventional two-dimensional single-side expansion nozzle is overcome, and the nozzle has the advantages of simple structure and high reliability at the same time.
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Description

technical field

[0001] The invention belongs to the technical field of aero-engine nozzles, and relates to a novel dual-unit unilateral expansion nozzle with good stealth function, and is also applicable to the fields of other engine nozzles in need. Background technique

[0002] Due to the hollow structure inside the traditional dual-unit single-side expansion nozzle of aero-engine, it cannot effectively shield the front-end hot-end components, resulting in weak stealth ability. The dual-unit single-side expansion nozzle with S-curved or bent channels Although the front-end hot-end component can be partially shielded, the height and length of the nozzle will increase, which will affect the installation of the engine on the aircraft. Therefore, in order to make up for the defects of the conventional binary unilateral expansion nozzle, it is necessary to design a new type of binary unilateral expansion nozzle with good stealth ability that does not affect the structural size ...

Claims

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