A binary plug nozzle

A plug-type nozzle and nozzle technology, which is applied to jet propulsion devices, machines/engines, etc., can solve the problems of increased nozzle stern angle and reduced thrust performance, achieve efficient throat area adjustment, and meet different working conditions. the desired effect
CN104948343BActive Publication Date: 2016-11-02AECC 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
2016-11-02

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Abstract

The invention relates to the field of design of aero-engines, in particular to design of a two-dimensional plug nozzle of an aero-engine. The two-dimensional plug nozzle is characterized by comprising a cylinder (1), side walls (2), convergent sections (3), a plug (4), mounting bases (5), actuator cylinders (6), pull rods (7), rocker arms (8) and connecting rods (9). Piston rods of the actuator cylinders (6) act to push the plug (4) to slide forwards and backwards, meanwhile, the pull rods (7) drive the rocker arms (8) so as to drive the connecting rods (9) to enable the convergent sections (3) to deflect. The throat area of the nozzle is adjusted under the coaction of slide of the plug (4) and deflection of the convergent sections (3). The throat area can be efficiently adjusted through combined movement of the plug (4) and the convergent sections (3). The nozzle is simple in structure, convenient to operate, widely applicable to the design of the two-dimensional nozzle of the aero-engine and also applicable to the design field of aero-engines or airspace engines with similar functions.
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Description

technical field

[0001] The invention relates to the field of aero-engine design, in particular to the design of an aero-engine binary plug nozzle. Background technique

[0002] The existing binary plug nozzles usually adjust the throat area in two ways: one is to move the plug cone back and forth, and the other is to deflect the converging section. Due to the requirements of aerodynamic performance, the profile of the plug cone of the binary plug nozzle generally needs a smooth transition. Therefore, when adjusting the throat area by moving the plug cone back and forth, it is necessary to move the plug cone back and forth a large distance; while the deflection convergence section is realized When a smaller throat area is required, the stern angle of the nozzle will become larger, which will reduce its thrust performance. Contents of the invention

[0003] The purpose of the present invention is to provide a binary plug nozzle that can efficiently realize the adjustment of...

Claims

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