An air jet type dynamic pressure distortion generator and its generating method

A distortion generator and dynamic pressure technology, which is used in jet engine testing, gas turbine engine testing, instruments, etc., can solve the problem that the intensity of dynamic pressure distortion cannot meet the requirements of dynamic distortion intensity of engine intake air, and achieves ingenious design and disassembly. Easy to install and the effect of expanding the effect area

Active Publication Date: 2022-04-29
AVIC SHENYANG AERODYNAMICS RES INST
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Problems solved by technology

[0005] The research and development purpose of the present invention is to solve the problem that the strength of the dynamic pressure distortion produced by the existing pressure distortion generator is difficult to meet the requirements of the dynamic distortion strength of the real engine air intake. A brief overview of the present invention is given below in order to provide information on the present invention. A basic understanding of some aspects of the invention

Method used

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  • An air jet type dynamic pressure distortion generator and its generating method
  • An air jet type dynamic pressure distortion generator and its generating method
  • An air jet type dynamic pressure distortion generator and its generating method

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specific Embodiment approach 1

[0075] Specific implementation mode one: combine Figure 1-Figure 7 Describe this embodiment, an air jet dynamic pressure distortion generator and its generation method in this embodiment, including an engine intake pipe 1, a nozzle assembly 2, a rapid valve group 3, an annular air supply pipe 4, and a straight air supply pipe 5 , the main switch valve 6, the pressure regulating valve 7 and the filter valve 9, the nozzle assembly 2 is arranged and installed inside the engine intake pipe 1, the nozzle assembly 2 is connected and installed with the annular air supply pipe 4 through the rapid valve group 3, and the annular air supply pipe 4 It is installed in communication with the air supply straight pipe 5. The air supply straight pipe 5 is provided with a main closing valve 6, a pressure regulating valve 7 and a filter valve 9. The engine intake pipe 1 is an equal straight pipe, and it is connected with the inlet of the aeroengine ground test device. The gas end is connected a...

specific Embodiment approach 2

[0076] Specific implementation mode two: combination Figure 1-Figure 7 Describe this embodiment, an air jet type dynamic pressure distortion generator and its generation method in this embodiment, the engine intake pipe 1 is processed with an air intake through hole 11, and the two ends of the air intake through hole 11 are respectively connected to the fast valve Group 3 and nozzle assembly 2 are installed in communication.

specific Embodiment approach 3

[0077] Specific implementation mode three: combination Figure 1-Figure 7 Describe this embodiment, based on specific embodiment 1, an air jet type dynamic pressure distortion generator and its generation method in this embodiment, the nozzle assembly 2 is fixedly installed on the inner wall of the engine intake pipe 1, the nozzle assembly 2 and The fast valve group 3 is connected and installed, and the number of nozzle assemblies 2 is 6 to 12.

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Abstract

An air jet dynamic pressure distortion generator and a generating method belong to the field of aero-engine ground bench testing. The invention includes an engine air intake pipe, a nozzle assembly, a quick valve group, an annular air supply pipe, an air supply straight pipe, an on-off valve, a pressure regulating valve and a filter valve. The valve group is connected and installed with the annular air supply pipe, the annular air supply pipe is connected with the air supply straight pipe, and the relevant valve, pressure regulating valve and filter valve are installed on the open air supply straight pipe. The purpose of research and development of the present invention is to solve the problem that the intensity of dynamic pressure distortion generated by the existing pressure distortion generator cannot meet the requirements of the real engine intake dynamic distortion intensity. The present invention can continuously adjust in a wide range by changing the air supply pressure. The amplitude of the pulsating pressure can accurately simulate the dynamic pressure distortion, and can simulate the two dynamic pressure distortions of the aero-engine intake air.

Description

technical field [0001] The invention relates to an air jet type dynamic pressure distortion generator and a generating method, which belong to the field of aero-engine ground bench tests. Background technique [0002] Air intake ducts of different forms are generally arranged in front of aircraft engines to adapt to wider flight conditions. Different types of pressure distortions will occur at the outlet section after the airflow flows through the intake pipe, including steady-state pressure distortion in the form of steady-state pressure uneven distribution and dynamic pressure distortion in the form of pressure pulsation. At different flight attitudes and speeds, the proportions of the steady-state pressure distortion index and dynamic pressure distortion index in the comprehensive distortion index are different. [0003] At present, there are many methods for the simulation of steady-state pressure distortion, including distortion nets, simulation boards, plug-in boards,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/14G01M15/02
CPCG01M15/14G01M15/02
Inventor 曹永飞王旭东赵振山李家宏杜羽
Owner AVIC SHENYANG AERODYNAMICS RES INST
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