KR101592284B1 - Airflow generator using multiple layer fans - Google Patents

Airflow generator using multiple layer fans Download PDF

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Publication number
KR101592284B1
KR101592284B1 KR1020140134528A KR20140134528A KR101592284B1 KR 101592284 B1 KR101592284 B1 KR 101592284B1 KR 1020140134528 A KR1020140134528 A KR 1020140134528A KR 20140134528 A KR20140134528 A KR 20140134528A KR 101592284 B1 KR101592284 B1 KR 101592284B1
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KR
South Korea
Prior art keywords
housing
fans
main fan
layer
height
Prior art date
Application number
KR1020140134528A
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Korean (ko)
Inventor
길용식
조정훈
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현대건설주식회사
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Priority to KR1020140134528A priority Critical patent/KR101592284B1/en
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Publication of KR101592284B1 publication Critical patent/KR101592284B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels

Abstract

By including the main fan and the multi-layer fans in the housing, it is possible to generate a rising airflow as well as an upward airflow by using only one device. In addition, the height of the main fan can be adjusted and the wind speed and angle of the multi-layer fans can be adjusted. Thus, airflows of various sizes and shapes can be reproduced. In addition, since the test bed equipped with the experimental model can be moved, there is an advantage in that the cost is reduced and operation is easier than moving the housing. In addition, when the upper housing and the lower housing are formed to include an upper housing, an intermediate housing, and a lower housing to generate a rising airflow, when a downward flow is to be generated, By using the intermediate housing in combination, turbulence generation due to a change in cross-sectional area of the housing upon generation of a downward flow can be prevented.

Description

[0001] The present invention relates to an airflow generator using multiple layer fans,

The present invention relates to an airflow generating apparatus using a multi-layer fan, and more particularly, to an airflow generating apparatus using a multi-layer fan that can be used to artificially generate a variety of airflows to evaluate the stability of buildings and industrial facilities.

Generally, the airflow represents the flow of air, and the heating of the air by the solar radiation eventually represents the temperature difference according to the latitude. For this reason, the convection phenomenon occurs and the airflow, which is the air flow, is generated. The wind only means the flow of air in the horizontal direction, but the air current means the flow of air in the vertical direction as well as the horizontal direction. In the air stream, the upward air stream is the air upward, and the downward air stream is the air downward. In Korea, a tornado phenomenon, which is a kind of tornado, is generated. Recently, asymmetric air current phenomenon due to a change of weather is often occurred.

Conventionally, the structure is designed so as not to cause safety or usability to wind against the building through wind-resistant design. However, the airflow such as the tornado has a pattern different from that of the conventional airflow design, so there is a limitation in using the conventional airflow design.

In addition, the conventional tornado generating apparatus has a problem that there are limitations in reproducing airflows of various sizes and sizes by providing fans only on the top and bottom.

Korean Patent No. 10-0423361

It is an object of the present invention to provide an airflow generating apparatus using a multi-layer fan capable of generating various types of airflows.

The air flow generating device using the multi-layer fan according to the present invention is characterized in that the air flow generating device is provided with a housing having a long air flow path and an upper part of the housing and being rotatable in both directions, And a plurality of multi-layered fans arranged at predetermined intervals in the vertical direction on the inner surface of the housing and capable of rotating at the same speed or at different speeds to generate a change in wind speed according to the height .

The present invention is advantageous in that, by including the main fan and the multi-layer fans in the housing, it is possible to artificially generate various kinds of airflow by only one device.

In addition, the height of the main fan can be adjusted and the wind speed and angle of the multi-layer fans can be adjusted. Thus, airflows of various sizes and shapes can be reproduced.

In addition, since the test bed equipped with the experimental model can be moved, there is an advantage in that the cost is reduced and operation is easier than moving the housing.

In addition, when the upper housing and the lower housing are formed to include an upper housing, an intermediate housing, and a lower housing to generate a rising airflow, when a downward flow is to be generated, By using the intermediate housing in combination, turbulence generation due to a change in cross-sectional area of the housing upon generation of a downward flow can be prevented.

1 is a cross-sectional view illustrating an airflow generating apparatus using a multi-layer fan according to a first embodiment of the present invention.
2 is a sectional view taken along the line II in Fig.
3 is a sectional view showing a state in which a downward airflow is generated in FIG.
4 is a cross-sectional view showing an airflow generating apparatus using a multi-layer fan according to a second embodiment of the present invention.
5 is a sectional view taken along the line II-II in Fig.
6 is a cross-sectional view illustrating an airflow generating apparatus using a multi-layer fan according to a third embodiment of the present invention.
FIG. 7 is a cross-sectional view of the upper housing and the lower housing shown in FIG. 6.
FIG. 8 is a cross-sectional view showing a state in which all the upper, middle, and lower housings shown in FIG. 6 are coupled.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view illustrating an airflow generating apparatus using a multi-layer fan according to a first embodiment of the present invention. 2 is a sectional view taken along the line I-I in Fig. 3 is a sectional view showing a state in which a downward airflow is generated in FIG.

1 to 3, an airflow generating apparatus 1 according to a first embodiment of the present invention includes a housing 10, a main fan 20, a height adjusting means 40, multi-layer fans 30, And a test bed (50).

The housing 10 has a long air flow path in the vertical direction. The housing 10 has a long cylindrical shape in the vertical direction. The upper portion of the housing 10 has a shape in which the cross-sectional area gradually decreases toward the upward direction, and the lower portion has a constant cross-sectional area. An upper opening 10a is formed on the upper surface of the housing 10 and a lower opening 10b is formed on the lower surface.

The upper opening 12a is provided with the upper duct 12 on which the main fan 20 is installed. At least a part of the upper duct 12 protrudes toward the upper side of the housing 10 and the rest of the upper duct 12 is inserted into the housing 10.

The main fan (20) is installed in the upper duct (12). The main fan 20 is connected to a bi-directional motor (not shown) so as to be bi-directionally rotatable to generate a rising airflow in the air flow path when rotating in one direction and a downward airflow when rotating in the opposite direction. An upper wire screen 22 is installed on the front surface of the main fan 20 or the upper duct 12. The upper wire screen 22 is also referred to as a net door, and is formed in a mesh or grill shape. The upper wire screen 22 serves to make the flow uniform and to block foreign matter.

The height adjusting means 40 is installed to adjust the height of the main fan 20 in the vertical direction. The height adjusting means 40 will be described by adjusting the vertical height of the main fan 20 between the main fan 20 and the upper duct 12, for example. The height adjusting means 40 is provided between the upper opening 12a and the upper opening 12a so as to adjust the vertical height of the upper duct 12 to adjust the height of the main fan 20, It is of course also possible to adjust the height of the lens. The height adjusting means 40 may be a hydraulic cylinder 24, but is not limited thereto. For example, the height adjusting means 40 may be moved up and down by rotation of the lead screw and the lead screw, A pinion gear rotatably driven by a motor and a rack gear coupled to the main fan 20 when the pinion gear is engaged with the pinion gear and is moved up and down, Of course. That is, the height adjusting means 40 can be applied to any device that can adjust the vertical height of the main fan 20.

The multi-layered fan (30) is composed of a plurality of multi-layered fans (30) spaced apart from each other by a predetermined distance in the vertical direction on the inner surface of the housing (10). The plurality of multi-layered fans 30 are capable of rotating at the same speed or at different speeds to each other to produce a change in wind speed along the height. The plurality of multilayer fans 30 includes a first layer pan 31, a second layer pan 32 provided at a position higher than the first layer pan 31, And a third-layer pan 33 provided at a higher position. However, the present invention is not limited to this, and it is of course possible that the plurality of multi-layer fans 30 comprise two layers or four or more layers. The first, second, and third layer fans 31, 32, and 33 are spaced a predetermined distance apart in the circumferential direction. In the present embodiment, the first, second, and third layer fans 31, 32, and 33 are arranged in four circumferential directions, respectively. The multi-layer fan 30 can be controlled such that the fans arranged at the same height rotate at the same speed with each other, and the fans arranged at different heights rotate at different speeds.

A plurality of side openings formed at positions spaced apart from each other by a predetermined distance in the vertical direction are formed on the side surface of the housing 10 and a plurality of side ducts 14 are installed. The multi-layered fan 30 is installed in each of the plurality of side ducts 14.

A side wire screen 15 is provided on each of the front or side ducts 14 of the multi-layer fan 30. The side wire screen 15 is also referred to as a net door and is formed in a mesh or grill shape. The side wire screen 15 serves to make the flow uniform and to block foreign matter.

The test bed 50 is installed at a lower portion of the housing 10 so as to correspond to a lower opening 10b of the housing 10. [ The test bed (50) is provided with an experimental model (51) for testing the influence of the air flow generated when the main fan (10) and the multi-layer fan (30) operate. The experimental model 51 includes models such as buildings, industrial facilities, and mountains. The test bed (50) is moved in at least one of the vertical direction and the lateral direction by the bed moving means. The bed moving means includes a left and right moving unit (not shown) having a pinion gear rotated by driving of a motor and a rack gear coupled to the test bed 50 so as to move in the left and right direction, (Not shown) made up of a hydraulic cylinder for vertically advancing or retracting the test bed 50 will be described by way of example. However, the present invention is not limited to this, and any of them can be applied as long as the test bed 50 can be moved up and down and left and right.

The operation of the airflow generator according to the first embodiment of the present invention will now be described.

When the main fan 20 is driven to rotate in one direction and the driving of the plurality of multi-layer fans 30 is stopped, a uniform upward flow of airflow is generated in the housing 10.

In this case, the vertical height of the main fan 20 can be adjusted by the height adjusting means 40. Since the vertical height of the main fan 20 can be adjusted, the height of the upward flow can be adjusted. Therefore, airflows of various sizes can be reproduced.

In addition, the influence of the ascending airflow on the test model 51 can be tested while moving the test bed 50 in the vertical direction or the left-right direction.

1, when the main fan 20 is driven to rotate in one direction and the plurality of multi-layer fans 30 are driven, it is possible to generate various types of upward flow have. That is, the plurality of multi-layer fans 30 blow toward the center of the housing 10 to generate various types of airflows.

At this time, it is possible to control them to rotate at the same speed according to the height of the plurality of multi-layer fans 30, or to control them to rotate at different speeds. When the rotational speeds of the first, second, and third floors 31, 32, and 33 are different, a variety of airflows can be generated by changing the wind speed according to the height. It is also possible that at least a part of the plurality of multi-layer fans 30 is driven.

Meanwhile, when the main fan 20 is driven to rotate in the opposite direction and the driving of the plurality of multi-layer fans 30 is stopped, a downward flow, which is a uniform flow, is generated in the housing 10.

In this case, the vertical height of the main fan 20 can be adjusted by the height adjusting means 40. Since the vertical height of the main fan 20 can be adjusted, the height of the downward flow can be adjusted. Thus, it is possible to reproduce the descending airflow of various sizes.

3, when the main fan 20 is driven to rotate in the opposite direction and the plurality of multi-layer fans 30 are driven, a variety of forms Downward flow can be generated. That is, the plurality of multi-layer fans 30 blow toward the center of the housing 10 to generate various types of airflows.

At this time, it is possible to control them to rotate at the same speed according to the height of the plurality of multi-layer fans 30, or to control them to rotate at different speeds. When the rotational speeds of the first, second, and third floors 31, 32, and 33 are different, a variety of airflows can be generated by changing the wind speed according to the height. It is also possible that at least a part of the plurality of multi-layer fans 30 is driven.

As described above, when only the main fan 20 is rotated in one direction or the opposite direction, it is possible to generate an upward flow and a downward flow, which are uniform flows, and to operate the multi-layer fans 30 in conjunction with the operation of the main fan 20 It is possible to generate various types of airflows such as turbulence having turbulence.

4 is a cross-sectional view showing an airflow generating apparatus using a multi-layer fan according to a second embodiment of the present invention. 5 is a sectional view taken along the line II-II in Fig.

4 and 5, an airflow generating apparatus 1 'using a multi-layer fan according to a second embodiment of the present invention includes a main fan 120 and multi-layer fans 130, 130 are different from those of the first embodiment, and other configurations and operations are similar to those of the first embodiment, so that a description of the similar configuration is omitted, Will be described in detail.

The main fan 120 is fixed to the upper portion of the housing 110. However, the present invention is not limited thereto. The height of the main fan 120 may be adjustable in the vertical direction.

A plurality of the multi-layered fans 130 are disposed on the inner surface of the housing 110 at predetermined intervals in the vertical direction. The multi-layered fan 130 is disposed to protrude from the inner side of the housing 110 toward the inside of the housing 110. The plurality of multi-layered fans 130 are rotatable at different speeds to produce a change in wind speed along the height. The plurality of multi-layer fans 130 includes a first layer pan 131, a second layer fan 132 located at a higher position than the first layer pan 131, And a third-layer pan 133 provided at a higher position. However, the present invention is not limited to this, and it is of course possible that the plurality of multi-layer fans 130 include two layers or four or more layers. The first, second, and third layer fans 131, 132, and 133 are spaced a predetermined distance apart in the circumferential direction. In this embodiment, the first, second, and third layer fans 131, 132, and 133 are disposed in four circumferential directions, respectively. The multi-layered fan 130 can be controlled such that the fans arranged at the same height rotate at the same speed, and the fans arranged at different heights rotate at different speeds.

The tilting adjusting means 140 is provided between the housing 110 and the multi-layer fans 130 to adjust the angle at which the multi-layer fans 130 blow air. That is, the tilting adjusting means 140 adjusts the angle at which the multi-layer fans 130 blow air by adjusting the multi-layer fans 130 to be inclined at a predetermined angle with respect to the inner surface of the housing 110 have. The tilting adjusting means 140 may have a hinge structure or a gear structure and may be of any type capable of adjusting the angle of the multi-layered fan 130.

Reference numeral 122 denotes a screen provided on the front surface of the main fan 120. [

The operation of the airflow generating apparatus according to the second embodiment of the present invention will now be described.

First, only the main fan 120 is driven to rotate in one direction and the driving of the plurality of multi-layered fans 130 is stopped, thereby generating an upward flow in the housing 110. Therefore, the influence of the ascending airflow on the experimental model 51 disposed at the lower portion of the housing 110 can be tested.

When the main fan 120 is driven to rotate in the opposite direction and the driving of the plurality of multi-layered fans 130 is stopped, a downward flow is generated in the housing 110. Therefore, the influence of the downward airflow on the experimental model 51 disposed at the lower portion of the housing 110 can be tested.

When the main fan 120 is rotationally driven in one direction and the plurality of multi-layer fans 130 is driven, a rising rotating air current including a swirl is generated in the housing 110.

When the main fan 120 is driven to rotate in the opposite direction and the plurality of multi-layer fans 130 are driven, a downward rotating current including a swirl is generated in the housing 110.

At this time, it is possible to control them to rotate at the same speed according to the height of the plurality of multi-layer fans 30, or to control them to rotate at different speeds. When the rotational speeds of the first, second, and third floors 31, 32, and 33 are different, a variety of airflows can be generated by changing the wind speed according to the height. For example, if the rotational speeds of the first, second, and third floors 31, 32, and 33 are increased as the height is increased, airflow such as a hurricane is generated, ) 32, 33, the airflow like the tornado can be generated when the rotation speed of the second floor pan 32 located at the middle side is the largest.

5, when adjusting at least a part of the plurality of the multi-layer fans 130 through the tilting adjusting means 140 so as to be inclined at a predetermined angle?, The inclination angle of the multi-layer fans 130 It is possible to generate an air current having a variety of wind directions.

6 is a cross-sectional view illustrating an airflow generating apparatus using a multi-layer fan according to a third embodiment of the present invention. FIG. 7 is a cross-sectional view of the upper housing and the lower housing shown in FIG. 6. FIG. 8 is a cross-sectional view showing a state in which all the upper, middle, and lower housings shown in FIG. 6 are coupled.

6 to 8, an airflow generating apparatus 200 using a multi-layer fan according to a third embodiment of the present invention includes a housing 210, a main fan 220, and multi-layer fans 230, Since the housing 210 is composed of the upper housing 211, the intermediate housing 212, and the lower housing 213, the structure and operation of the second embodiment are similar to those of the second embodiment. The description of the similar configuration will be omitted and the different points will be mainly described.

The main fan 220 may be fixed to the upper portion of the housing 210. However, the present invention is not limited thereto and the height of the main fan 220 may be adjustable.

A plurality of the multi-layered fans 230 are disposed on the inner surface of the housing 210 at predetermined intervals in the vertical direction. The multi-layered fans 230 protrude from the inner surface of the housing 210 toward the inside of the housing 210. The plurality of multi-layered fans 230 are rotatable at different speeds to produce a change in wind speed along the height. The plurality of multi-layer fans 230 includes a first layer fan 231, a second layer fan 232 disposed at a higher position than the first layer fan 231, And a third layer 233 provided at a higher position.

The housing 210 includes an upper housing 211, an intermediate housing 212, and a lower housing 213, which are detachably coupled to each other.

The main housing 220 and the upper screen 222 are coupled to each other on the upper surface of the upper housing 211, and the cross-sectional area of the upper housing is increased in a downward direction. That is, the upper housing 211 includes a cylindrical portion 211a on which the main fan 220 is installed, and an extended portion 211b extending downward from the cylindrical portion and configured to increase in cross-sectional area. A flange portion is formed at the lower end of the extension 211b to engage with the intermediate housing 212 or the lower housing 213.

The intermediate housing 212 is coupled between the upper housing 211 and the lower housing 213 when a downward airflow is generated, and is detached to generate an upward flow. The intermediate housing 212 has a cylindrical shape with a constant cross-sectional area. The cross-sectional area of the intermediate housing 212 is the same as the cross-sectional area of the lower housing 213.

A change in sectional area between the upper housing 211 and the intermediate housing 212 is minimized and a flow from the upper housing 211 to the intermediate housing 212 is more uniformly formed inside the intermediate housing 212 A flow guide 214 for guiding is formed.

The flow guide 214 is formed in a cylindrical shape bent at a predetermined curvature so as to minimize a change in sectional area between the upper housing 211 and the intermediate housing 212. The lower end of the flow guide 214 is coupled to the intermediate housing 212 and the upper end of the flow guide 214 protrudes from the inner surface of the upper housing 211.

The operation of the airflow generator according to the third embodiment of the present invention will now be described.

Referring to FIG. 7, when the user wishes to generate a rising airflow, the upper housing 211 and the lower housing 213 are coupled to each other. That is, the intermediate housing 212 is not used.

When only the main fan 220 is driven to rotate in one direction and the driving of the plurality of multi-layered fans 230 is stopped, an upward flow, which is a uniform flow, is generated in the housing 210. Therefore, it is possible to test the influence of the upward airflow on the experimental model disposed under the housing 210.

When the main fan 120 is rotationally driven in one direction and the plurality of multi-layer fans 130 is driven, a rising rotating air current including a swirl is generated in the housing 110.

Meanwhile, when a downward flow is to be generated, the intermediate housing 212 is coupled between the upper housing 211 and the lower housing 213. When the intermediate housing 212 is coupled between the upper housing 211 and the lower housing 213, the upper end of the flow guide 214 is in contact with the inside of the upper housing 211. Accordingly, a change in cross-sectional area from the upper housing 211 to the intermediate housing 212 is reduced.

At this time, when the main fan 120 is driven to rotate in the opposite direction and the driving of the plurality of multi-layered fans 130 is stopped, a downward flow is generated in the housing 110 as a uniform flow. Therefore, the influence of the downward airflow on the experimental model 51 disposed at the lower portion of the housing 110 can be tested.

When the main fan 120 is driven to rotate in the opposite direction and the plurality of multi-layer fans 130 are driven, a downward rotating current including a swirl is generated in the housing 110.

The air flow blown from the main fan 210 is moved downward along the flow guide 214 provided between the upper housing 211 and the middle housing 212. At this time, . Therefore, turbulent flow or the like is prevented from being generated between the upper housing 211 and the intermediate housing 212, and the flow can be made more uniform.

Meanwhile, the plurality of multi-layered fans 230 can be controlled to rotate at different speeds according to their heights. When the rotational speeds of the first, second, and third layer fans 231, 232, and 233 are different, a variety of airflows can be generated by changing the wind speed according to the height.

Further, when adjusting at least a part of the plurality of multi-layer fans 230 to be inclined at a predetermined angle?, It is possible to generate airflows with various wind directions.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10, 110, 210: housing 20, 120, 220:
30, 130, 230: Multi-layer fan 214:

Claims (12)

A housing in which an air flow path is elongated in a vertical direction;
A main fan installed at an upper portion of the housing and bi-directionally rotatable to generate either a rising air current or a falling air current in the air passage;
And a plurality of multi-layered fans arranged at predetermined intervals in the vertical direction on the inner surface of the housing, the multi-layer fans being capable of rotating at the same speed or at different speeds,
The housing includes:
An upper housing coupled with the main fan on an upper surface thereof and having a cross sectional area increased in a downward direction;
A lower housing disposed on the lower side of the upper housing and having a constant section formed when an upward flow is to be generated;
And an intermediate housing coupled between the upper housing and the lower housing and having a flow guide for guiding the flow from the upper housing to the lower housing when the downward flow is generated. Claim 1
Further comprising height adjusting means for adjusting the height of the main fan in the vertical direction. Claim 2
Further comprising an upper duct provided in an opening formed in the upper surface of the housing and having the main fan installed inside,
Wherein the height adjusting means adjusts the vertical height of the main fan between the main fan and the upper duct. Claim 2
Further comprising an upper duct provided in an opening formed in the upper surface of the housing and having the main fan installed inside,
Wherein the height adjusting means is provided between the opening and the upper duct to adjust a vertical height of the upper duct. The method according to claim 3 or 4,
Wherein the plurality of upper ducts are each provided with a wire screen. The method according to claim 1,
The lower housing has a cylindrical shape,
Wherein the plurality of multi-layered fans are disposed at predetermined intervals in a circumferential direction on a side surface of the lower housing. The method according to claim 1,
A plurality of openings formed at positions spaced apart from each other by a predetermined distance in a vertical direction on a side surface of the lower housing,
Further comprising a plurality of side ducts respectively provided in the openings and in which the multi-layered fans are installed, respectively. The method of claim 7,
Wherein the plurality of side ducts are each provided with a wire screen. Continuing from claim 1,
Further comprising a tilting adjusting means installed to adjust the angle at which the multilayer fans blow air. Continuing from claim 1,
A test bed disposed at an opening formed in a lower surface of the housing and equipped with a model for testing the influence of airflow generated when the main fan and the multi-layer fan operate;
Further comprising bed moving means for moving the test bed in at least one of an upper and a lower and a left and right direction. delete Continuing from claim 1,
The flow guide
Wherein the air flow is formed by a multi-layered fan having a shape curved at a predetermined curvature so as to reduce a change in sectional area between the upper housing and the intermediate housing, Generating device.
KR1020140134528A 2014-10-06 2014-10-06 Airflow generator using multiple layer fans KR101592284B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004053289A (en) 2002-07-17 2004-02-19 Univ Kanagawa Wind tunnel test device for base isolated building
WO2006012647A3 (en) 2004-07-30 2006-06-01 Skyventure Llc Recirculating vertical wind tunnel skydiving simulator and reduced drag cable for use in wind tunnels and other locations

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004053289A (en) 2002-07-17 2004-02-19 Univ Kanagawa Wind tunnel test device for base isolated building
WO2006012647A3 (en) 2004-07-30 2006-06-01 Skyventure Llc Recirculating vertical wind tunnel skydiving simulator and reduced drag cable for use in wind tunnels and other locations

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