Aero-engine air intake distortion simulation device

An aero-engine and simulation device technology, applied in the field of turbomachinery technology and aero-engine, can solve the problems of performance loss, rarely developing engines, etc.

Active Publication Date: 2020-05-19
BEIHANG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Existing studies have shown that rotational intake distortion has a strong impact on the performance of the compressor, and even in some cases rotational distortion can additionally increase the margin and efficiency of the compressor
However, the total circumferential pressure distortion will only have an adverse effect on the compressor system, and the existing research on the total circumferential pressure distortion mainly focuses on evaluating the performance loss caused by this distortion through numerical calculation and experimental methods
Even if the industry conducts relevant experimental research, it can only perform map simulation on the steady-state comprehensive distortion, and rarely conducts relevant research on the influence of unsteady-state distortion (such as rotational distortion or swirl distortion) on the engine in the test design stage. , not to mention simulating rotational or swirl distortions under laboratory conditions

Method used

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  • Aero-engine air intake distortion simulation device
  • Aero-engine air intake distortion simulation device
  • Aero-engine air intake distortion simulation device

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Embodiment 1 (rotation distortion generating device)

[0053] This embodiment provides an air intake distortion simulation device for an aero-engine, which can cause the airflow to enter the aero-engine to generate rotational distortion before entering the air intake lip of the aero-engine, thereby realizing the simulation of rotational distortion.

[0054] Such as Figure 5 and Figure 6 As shown, the aeroengine intake distortion simulation device of this embodiment includes: four spoiler screens 2 , a drive motor 3 , a frequency converter (not shown in the figure) and a bracket 6 .

[0055] The bracket 6 is used to support the driving motor 3 so that the driving motor 3 can normally drive the rotation of the spoiler screen 2 . The position of the bracket 6 should make the axis of the drive motor 3 align with the axis of the air intake lip of the air intake passage 5 of the aero-engine, so that the intake air flow can enter the air intake lip smoothly.

[0056] The ...

Embodiment 2

[0066] Embodiment 2 (swirl distortion generating device)

[0067] This embodiment provides an air intake distortion simulation device for an aero-engine, which can cause the airflow to enter the aero-engine to generate swirl distortion before entering the air intake lip of the aero-engine, thereby realizing the simulation of swirl distortion.

[0068] Such as Figure 7 As shown, the aeroengine intake distortion simulation device of this embodiment includes: eight flat guide vanes 12 , a servo motor 13 and a bracket 16 .

[0069] The bracket 16 is used to support the servo motor 13, so that the servo motor 13 can be normally used for mounting ring installation. The position of the bracket 16 should make the axis of the servo motor 13 align with the axis of the air intake lip 14 of the air intake channel 15 of the aero-engine, so that the intake air flow can enter the air intake lip 14 smoothly.

[0070] Eight flat guide vanes 12 are arranged on the air intake side of the air ...

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PUM

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Abstract

The invention provides an aero-engine air inlet distortion simulation device which can simulate rotation distortion or rotational flow distortion of aero-engine air inlet. The invention discloses a rotation distortion simulation device which comprises an even number of spoiler screens, a driving motor used for driving the spoiler screens to rotate to generate rotation distortion and a frequency converter used for adjusting the rotation frequency of the driving motor. A rotational flow distortion simulation device comprises a servo motor used for installing an installation ring at one end of the device and an even number of flat plate guide blades installed on the installation ring through threaded structures. Each flat plate guide blade has a certain installation angle, and when air inletflow passes through the flat plate guide blades, needed rotational flow distortion can be generated. The aero-engine air intake distortion simulation device disclosed by the invention can be simultaneously suitable for various open or closed low-speed or high-speed turbine test beds so as to simulate rotation distortion or rotational flow distortion.

Description

technical field [0001] The disclosure belongs to the fields of turbine technology and aeroengines, and relates to an intake distortion simulation device used in aeroengine tests and research stages. Background technique [0002] With modern society and military requirements on the overall performance of aero-engines, the compressor system in a working gas turbine engine may encounter various types of intake distortion at any time. This non-uniform intake distortion condition will not only have a bad impact on the performance of the compressor, resulting in a decrease in its efficiency and pressure rise capability, but also easily lead to stall and surge, seriously endangering the stability of the compressor system. [0003] In this regard, researchers at home and abroad have been studying the intake distortion problem since the 1960s, especially the industry has paid more attention to the intake distortion experiment of new engines to ensure that they have sufficient stabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/14G01M15/02
CPCG01M15/02G01M15/14
Inventor 董旭孙大坤孙晓峰
Owner BEIHANG UNIV
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