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Device for measuring multiple aerodynamic parameters of an outlet section of an air inlet channel

A technology of outlet section and aerodynamic parameters, which is used in measuring devices, jet engine testing, gas turbine engine testing, etc. The effect of improving test efficiency

Inactive Publication Date: 2021-07-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the above problems, the present invention provides a multi-aerodynamic parameter measuring device for the outlet section of the air inlet, which solves the repeated disassembly and assembly of the measuring rake and accessory parts in the prior art, and reduces the manpower, material resources and time consumption caused by multiple disassembly and assembly. question

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  • Device for measuring multiple aerodynamic parameters of an outlet section of an air inlet channel

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Embodiment Construction

[0027] In order to make the purpose, technical method and advantages of the present invention clearer, the following will be combined with the attached Figure 1-5 The present invention is described in further detail.

[0028] In order to improve the measurement accuracy of the aerodynamic parameters of the inlet outlet in the wind tunnel test, and to obtain multiple aerodynamic parameters in a blowing test, the present invention proposes a multi-aerodynamic parameter measuring device for the outlet of the inlet, including a driving motor 1, The motor bracket 2 that fixes the driving motor 1, the rotating shaft 4 that is located in front of the driving motor 1 and is coaxially connected with the output shaft of the driving motor 1 through a coupling 3, the concentric shaft bracket 5 that carries the rotating shaft 4, and is installed on the front end of the concentric shaft bracket shaft sleeve 6. The rotating shaft 4 passes through the concentric shaft bracket 5 and the shaf...

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Abstract

The invention discloses a device for measuring multiple aerodynamic parameters of an outlet section of an air inlet channel. The device comprises a driving motor, a motor bracket, a rotating shaft, a probe mounting arm and a measuring probe. When an air inlet channel wind tunnel test is carried out, the driving motor drives the probe mounting arm to rotate, and aerodynamic parameters on a plurality of circular rings on the section of an outlet of the air inlet channel can be obtained; various parameters including total pressure, rotational flow angle, temperature and dynamic parameters in various states can be obtained by replacing the types of the probes; by arranging different probes in a crossed manner, various parameters can be obtained in one blowing test. The device is simple in structure, easy to implement and small in influence on a measurement flow field; the action of the device can be repeated; the device can obtain abundant test data, can improve the measurement precision of the outlet section of the air inlet channel, and reduces the air inlet channel wind tunnel test cost.

Description

technical field [0001] The invention belongs to the technical field of air inlet wind tunnel test measurement, and in particular relates to a rotary measuring device for measuring the aerodynamic parameters of the outlet section of an air inlet. Background technique [0002] As one of the components of an aero-engine, the air inlet is mainly responsible for capturing the flow and compressing the free flow. The wind tunnel blowing test on the air inlet is an indispensable part of developing a new engine. Usually in the wind tunnel test of the inlet, the researchers evaluate the performance of the inlet outlet by measuring the static total pressure, dynamic total pressure, temperature and swirl angle of the inlet outlet section, including the total pressure recovery. Coefficients, Total Pressure Distortion, Temperature Distortion, Swirl Distortion and Transient Distortion. The traditional measurement method is to arrange eight measuring rakes in the circumferential direction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06G01M15/14
CPCG01M9/06G01M15/14
Inventor 谭慧俊汪昆黄河峡李子杰陈诚林正康秦源唐学斌李方波李灿民
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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