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Ice cutter test device and test method

A test device and ice blade technology, applied in the field of wind tunnel tests, can solve the problems of wind tunnel tests, lack of liquid water content devices and methods, etc., to solve the difficult problems of liquid water content testing, easy to implement, and overcome harsh working environments Effect

Inactive Publication Date: 2015-02-11
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's first large-scale icing wind tunnel has been built, but there is a lack of corresponding devices and methods for measuring liquid water content, which has brought troubles to wind tunnel tests

Method used

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  • Ice cutter test device and test method
  • Ice cutter test device and test method
  • Ice cutter test device and test method

Examples

Experimental program
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Embodiment 1

[0029] In a certain icing test, the ice blade test device was first fixed on the wall of the wind tunnel, the protective cover was closed, and the blowing and spraying started. The wind speed was set at 105m / s. After the flow field was stable, the driving control protective cover was quickly opened to allow the working knife The front edge begins to collect ice patterns. After 90 seconds of testing, close the protective cover, stop spraying and stop blowing, and then go in to measure the thickness of the ice patterns collected by the front edge of the working knife. △S is 5mm, C is 1, ρ ice Take it as 880Kg / m 3 ,E b Take it as 0.95, after calculating the liquid water content of the wind tunnel in this state LWC = 0.49g / m 3 .

[0030] All features disclosed in this specification, except mutually exclusive features, can be combined in any way.

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Abstract

The invention discloses an ice cutter test device which comprises a supporting frame, wherein a mounting plate is arranged on the top of the supporting frame; a cutter rack, a protection cover frame, a driver and the like are fixedly arranged on the mounting plate; the ice cutter test device further comprises an ice cutter and a protection cover; one end of the ice cutter is fixed on the cutter rack; the ice cutter is positioned at the center of an air duct, and the front-edge working surface is perpendicular to the coming flow; the protection cover can rotate, so that the ice cutter has two states, namely a covered state and a non-covered state; the liquid water content value corresponding to the air duct can be calculated by measuring the icing thickness at the front edge of the ice cutter. The ice cutter test device belongs to initiated equipment for measuring and calibrating the liquid water content in the iced air duct, is simple in structure and working theory, fills the blank of the field and is good in implementation effect.

Description

technical field [0001] The invention belongs to the field of wind tunnel tests, and in particular relates to an ice blade test device and a test method for testing liquid water content in a wind tunnel in an icing wind tunnel. Background technique [0002] The icing wind tunnel is a special wind tunnel. Compared with the conventional wind tunnel, it can generate cloud and fog environment to simulate the icing atmospheric environment of the aircraft. The cloud and fog environment contains an important index parameter, that is, the liquid water content. In order to analyze and compare the results of the icing test, the liquid water content must be calibrated and measured before each icing test. my country's first large-scale icing wind tunnel has been built, but there is a lack of corresponding devices and methods for measuring liquid water content, which has brought troubles to wind tunnel tests. Contents of the invention [0003] In view of the above situation, the object...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 郭龙赖庆仁梁鉴李明马军
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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