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Compression system of variable cycle engine

A variable cycle engine and compression system technology, applied in the field of compression systems, to achieve the effect of changing thermodynamic cycle parameters and realizing variable cycle characteristics

Active Publication Date: 2019-08-23
AECC SHENYANG ENGINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a compression system of a variable cycle engine to solve at least one problem existing in the existing variable cycle engine compression system

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  • Compression system of variable cycle engine
  • Compression system of variable cycle engine
  • Compression system of variable cycle engine

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. Embodiments of the present application will be described in detail below in conjunction with th...

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Abstract

The invention belongs to the field of variable cycle engine structure design and particularly relates to a compression system of a variable cycle engine. The compression system comprises a shell, a CDFS rotor shaft, a CDFS rotor, a gas compressor second-stage rotor, a transfer disk, three rows of stators, a small duct, a valve, a first driving mechanism and a second driving mechanism, wherein theCDFS rotor shaft is provided with a shaft journal; the CDFS rotor and a first-stage rotor are fixedly arranged at the two ends of the shaft journal correspondingly; the first stator and the second stator are arranged on the axial two sides of the CDFS rotor, and the third stator is arranged between the first-stage rotor and the second-stage rotor; the small duct is formed in the position, betweenthe second stator and the first-stage rotor of the gas compressor, of a shell; the valve is used for controlling the outlet area of the small duct; the first driving mechanism is used for controllingthe valve to move; and the second driving mechanism is used for driving stator blades of the first stator to rotate. The compression system of the variable cycle engine, provided by the invention, canrealize pneumatic distribution of a CDFS and the gas compressor and gas flow distribution of an outlet of the CDFS, change thermodynamic cycle parameters of the engine and realize variable cycle characteristics.

Description

technical field [0001] The application belongs to the field of variable cycle engine structure design, in particular to a compression system of a variable cycle engine. Background technique [0002] The variable cycle engine adjusts the thermodynamic cycle parameters in combination with changes in the geometric shape, size or position of some components. Compared with the conventional mixed displacement turbofan engine, the variable cycle engine has better flow matching performance with the intake port, reducing the conventional mixed displacement turbofan. The overflow resistance and rear body resistance that occur during the throttling process of the engine improve the flow capacity of the fan, thereby reducing the installation loss of the propulsion system. Core driven fan stage (CDFS for short) and Front Variable Area Bypass Inject (FVABI for short) are the main components of the variable cycle engine compression system. [0003] Most of the existing technical solutions...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K3/04F02K3/075
Inventor 张德志纪福森赵鑫高凤树孙莹
Owner AECC SHENYANG ENGINE RES INST