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Adjustable fan-shaped inlet pressure distortion simulation board of engine

A technology of inlet pressure and fan-shaped plate, which is applied in the direction of engine testing, machine/structural component testing, measuring devices, etc., can solve the problems of unfavorable measurement accuracy of the total pressure field, increased backflow degree, and influence, so as to improve performance, Improve the flow field and use the promising effect

Inactive Publication Date: 2018-03-27
BEIJING POWER MACHINERY INST
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AI Technical Summary

Problems solved by technology

[0004] During the test of aerodynamic characteristics, it was found that when the depth of the insertion plate increases to a certain extent, the measurement section begins to flow back, and as it increases, the degree of backflow increases correspondingly, which has a negative impact on the accuracy of the total pressure field measurement

Method used

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  • Adjustable fan-shaped inlet pressure distortion simulation board of engine
  • Adjustable fan-shaped inlet pressure distortion simulation board of engine
  • Adjustable fan-shaped inlet pressure distortion simulation board of engine

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Embodiment Construction

[0035] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] In order to solve the problems of the prior art, the present invention provides an engine adjustable fan-shaped inlet pressure distortion simulation board, such as Figure 2-Figure 3 As shown, it includes: sector plate 2 for positioning, several sector plates for deformation and sector plate 7 for transmission;

[0037] The simulation board is a plurality of small-angle fan-shaped board connection structures, and the top of the positioning fan-shaped board 2 is provided with a fixing hole 1, so as to be connected to the pipeline of the distortion simulator through the fixing hole 1;

[0038] The tails of the plurality of deformation sector plates, the tail portions of the positioning sector plates 2 and the tran...

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Abstract

The invention belongs to the field of aerodynamic stability of small turbofan engines, and in particular relates to an adjustable fan-shaped inlet pressure distortion simulation board of an engine. The adjustable fan-shaped inlet pressure distortion simulation board comprises a positioning fan-shaped plate, a plurality of deformation fan-shaped plates and a transmission fan-shaped plate. The circumferential movement of the simulation board is utilized to shield a local area within a flow channel, so that a range of a blockage ratio of the channel reaches 0 to 0.17, and the range can meet the use requirements for air inlet distortion resistance tests and surge tests of most of engines.

Description

technical field [0001] The invention belongs to the field of aerodynamic stability of a small turbofan engine, in particular to an engine adjustable fan-shaped inlet pressure distortion simulation board. Background technique [0002] The adjustable pressure distortion simulation board is a key device in the turbofan engine stability evaluation test. The simulation board is the core part of the device. The simulation board can more realistically simulate the total pressure distortion of the engine inlet section under given conditions. The schematic diagram of the working principle is as follows: figure 1 As shown, the air flow passes through the simulation board to form a low-pressure area, and the edge of the simulation board forms turbulent flow. By changing the state of the simulation board, the total pressure distortion and turbulence degree of the engine inlet are changed, in order to simulate the progress in a certain state in front of the engine. The characteristics o...

Claims

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Application Information

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IPC IPC(8): G01M15/02
CPCG01M15/02
Inventor 张韬赵伟马同玲
Owner BEIJING POWER MACHINERY INST
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