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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

Active Publication Date: 2016-11-02
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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 the smaller throat area is required, the stern angle of the nozzle will become larger, which will reduce the thrust performance

Method used

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  • A binary plug nozzle
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Embodiment Construction

[0015] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same elements unless otherwise indicated.

[0016] Such as figure 1 and figure 2 As shown, a binary plug nozzle provided by the present invention includes a cylinder body 1, a side wall 2, a converging section 3, a plug cone 4, a mounting seat 5, an actuator cylinder 6, a pull rod 7, a rocker arm 8 and The connecting rod 9 is characterized in that: the number of the cylinder 1 is 1, the inlet is circular, the outlet is square, and the middle is evenly transitioned; the side wall 2 and the cylinder 1 are fastened and connected by bolts, and the number is 2. Arranged symmetrically on the left and right sides of the nozzle, there is one chute A and two round holes B on it, the horizontal center plane of the chute A coincid...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K1/06
Inventor 宁怀松石晶商鹏程
Owner AECC SHENYANG ENGINE RES INST
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