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Water-absorbent ice shape cutter, ice shape measuring device and ice shape measuring method

A cutter and ice shape technology, applied in the field of wind tunnel testing, can solve the problems of random freezing, affecting fidelity, destroying the shape of ice accumulation, etc., and achieve the effect of high fidelity, simple structure, and accurate ice shape

Active Publication Date: 2021-10-08
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the device cuts the nitrogen gas to blow off the ice and melted water, due to the low temperature of the nitrogen gas, it is easy to cause random freezing on the surface of the ice shape in the overflow of the water, destroying the shape of the ice accumulation, and affecting the fidelity of the ice shape acquisition. The device uses a hot knife Heating by means of electric heating, it is easy to cause electric shock accidents in the humid environment of icing wind tunnels, and the safety is not good
[0006] In addition, when nitrogen blows off ice and melted water, due to the low temperature of nitrogen, it is easy to cause random freezing on the surface of the ice shape during the process of water overflow, which affects the fidelity of ice shape acquisition

Method used

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  • Water-absorbent ice shape cutter, ice shape measuring device and ice shape measuring method
  • Water-absorbent ice shape cutter, ice shape measuring device and ice shape measuring method
  • Water-absorbent ice shape cutter, ice shape measuring device and ice shape measuring method

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Such as Figure 1-Figure 10 As shown, Embodiment 1 of the present invention provides a water-absorbable ice cutter, including a cutting assembly 10, a water supply assembly 30, a water collection container 40, an air supply assembly 50, an ejector 60, and a water absorption assembly 70;

[0055] The water outlet of the water supply assembly 30 is connected to the water inlet of the ejector 60, and the water inlet of the water supply assembly 30 is connected to the water outlet of the water collection container 40;

[0056] The air inlet of the air supply assembly 50 is connected to the air source, and the hot air outlet of the air supply assembly 50 is connected to the air inlet of the ejector 60;

[0057] The jet port of the ejector 60 is connected to the inlet of the cutting assembly 10, the outlet of the cutting assembly 10 is connected to the heat recovery port of the water collection container 40, and the cutting assembly (10) forms a housing cavity; the The water...

Embodiment 2

[0107] This embodiment 2 provides an ice shape measurement device (not shown in the accompanying drawings), including a measurement bracket, a measurement board, graph paper and the absorbable ice shape cutter described in any one of embodiment 1 , the graph paper is placed on the measuring board, the measuring board and the ice cutter are installed on the support, the measuring board and the ice cutter can move up and down along the support, and The measurement plate is located above the ice cutter.

[0108] In the above scheme, the ice-shaped cutter is slidably installed on the measuring bracket, and the measuring plate is also slidably installed on the measuring bracket. The measuring plate is installed above the ice-shaped cutter, and by moving the position of the ice-shaped cutter relative to the measuring bracket, First move the ice cutter to the side of the aircraft model that needs to be cut, then move and cut along the arc of the aircraft model to be cut until the des...

Embodiment 3

[0111] Such as Figure 11 As shown, the present embodiment 3 provides a method for measuring ice shape using the above-mentioned ice shape measuring device, comprising the following steps:

[0112] Step S10: arranging the ice shape measurement device as described in Example 2 in the wind tunnel;

[0113] Step S20: Adjusting the height of the ice cutter relative to the measuring bracket to the target height of the ice shape position to be measured;

[0114] Step S30: Move the ice-shaped cutter horizontally to the target height on one side of the aircraft model, and the ice-shaped cutter moves telescopically along the aircraft model until the gap is cut, the ice-shaped cutter stops moving, and moves the ice-shaped cutter away from aircraft model;

[0115] Step S40: adjusting the height of the measuring board to be consistent with the height when the ice cutter cuts;

[0116] Step S50: Move the measuring board horizontally to the cutting gap, and insert the pre-cut graph paper...

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Abstract

The invention is suitable for the technical field of wind tunnel tests, and provides a water-absorbent ice shape cutter, an ice shape measuring device and an ice shape measuring method. The water-absorbent ice shape cutter comprises a cutting assembly, a water supply assembly, a water collecting container, an air supply assembly, an ejector and a water absorption assembly, wherein a water outlet of the water supply assembly is connected with a water inlet of the ejector, and a water inlet of the water supply assembly is connected with a water outlet of the water collecting container; an air inlet of the air supply assembly is connected with an air source, and a hot air outlet of the air supply assembly is connected with an air inlet of the ejector; an air injection opening of the ejector is connected with an inlet of the cutting assembly, an outlet of the cutting assembly is connected with a heat recovery opening of the water collecting container, and the cutting assembly forms a containing cavity; at least part of the water absorption assembly is located in the containing cavity, and the water absorption assembly is used for absorbing water generated during cutting of the cutting assembly; and the water inlet, the air inlet and the air injection opening of the ejector communicate with one another. By the adoption of the method, water can be absorbed in the cutting process, so that the fidelity of the obtained ice shape is high.

Description

technical field [0001] The invention relates to the field of wind tunnel tests, in particular to a water-absorbable ice shape cutter, an ice shape measurement device and an ice shape measurement method. Background technique [0002] When an aircraft passes through a large number of low-temperature clouds rich in supercooled liquid droplets, its windward surface is prone to icing, which poses a serious threat to the flight safety of the aircraft. Therefore, the icing test of the aircraft model was carried out in the icing wind tunnel It has been called an important link in the design and verification of aircraft anti-icing system. [0003] In wind tunnel tests on aircraft model icing, it is necessary to accurately obtain the two-dimensional cross-sectional shape of ice on the surface of the model (referred to as ice shape). The accuracy and speed of ice shape acquisition will directly affect the quality and efficiency of the test. In the prior art, the main method for obtain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25C5/08G01M9/02G01M9/06G01M9/08
CPCF25C5/08G01M9/02G01M9/06G01M9/08
Inventor 张平涛郭龙易贤张轲孙才国李自雨
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT