JP3207736B2 - Wind direction control device in wind tunnel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling a wind direction in a wind tunnel.

[0002]

2. Description of the Related Art As a conventional wind direction control device in a wind tunnel, there is one as shown in FIG. 3, and a vane plate rotatable around a vertical axis is provided at a front end of a wind path in a measuring section 3 in the wind tunnel. 2
Are laterally juxtaposed to form a cascade. Each blade 2 is provided with a rotation control mechanism 1 including a motor. Note that a support shaft protruding upward from the upper end of each blade plate 2 is supported by a bearing in a bearing housing 5. With the above configuration, an airflow with a controlled wind direction is sent to the terrain model 4 installed in the measurement unit 3.

[0003]

By the way, in the above-mentioned conventional wind direction control device in the wind tunnel, since each blade 2 is formed as a single vertically long one, the blade 2
In the vicinity of, the wind direction is constant over the vertical direction of the wind path, and there is a problem that natural winds having different wind directions depending on altitude are not sufficiently approximated. The present invention is intended to solve such a problem, and it is possible to make the wind direction different according to the altitude, so that the inside of a wind tunnel which can show a situation approximating the actual atmospheric flow as much as possible can be obtained. It is an object to provide a wind direction control device.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problem, an airflow direction control device in a wind tunnel according to the present invention comprises an upper wing and a lower wing which can rotate around substantially the same vertical axis in a wind path in the wind tunnel. It has a wing, and a special rotation control mechanism is provided for each of the upper wing and the lower wing. As described above, the vane plate for changing the wind direction in the wind tunnel is divided into at least an upper wing and a lower wing, and each of them has a dedicated rotation control mechanism. Since the rotation is controlled independently, an airflow similar to a natural wind having a different wind direction according to the altitude from the ground is generated.

Further, the wind direction control device in the wind tunnel according to the present invention is characterized in that the upper wing and the lower wing are arranged side by side in a lateral direction to form a cascade. When the upper wing and the lower wing each form a cascade in the lateral direction, the control of the wind direction in the air path can be performed finely even in accordance with the position in the lateral direction of the air path.

Further, the wind direction control device in the wind tunnel according to the present invention comprises:
An intermediate wing, which is rotatable around the vertical axis, is provided between the upper wing and the lower wing. Thus, a sudden change in the wind direction between the upper wing and the lower wing can be achieved by providing a dedicated rotation control mechanism on the intermediate wing or by using a means for appropriately restricting the intermediate wing to the upper wing or the lower wing. The effect of suppressing
The wind direction can be controlled finely.

In the wind direction control device in the wind tunnel according to the present invention, the intermediate wing is rotatably supported on a shaft, and the intermediate wing is arranged between the upper wing and the lower wing. It is characterized by being connected via a flexible connecting member. With such a configuration, the rotation control of the upper wing and the lower wing causes the deformation of the flexible connecting member that connects the intermediate wing and the intermediate wing, and the wing direction of the intermediate wing is changed to the wing of the upper wing. This is an intermediate direction between the direction and the wing direction of the lower wing, so that a sudden change in wind direction between the upper wing and the lower wing is automatically suppressed.

Further, the wind direction control device in the wind tunnel according to the present invention comprises:
The intermediate wings are provided in a plurality of stages vertically, and the upper and lower intermediate wings are also connected to each other via a flexible connecting member. As described above, when the intermediate wings are provided in a plurality of stages vertically and connected to each other by the flexible connecting member, the relative direction change is automatically generated between the intermediate wings, and the upper wing and the lower wing are automatically changed. Abrupt changes in wind direction between the wing and the wing are more appropriately mitigated.

Further, a dedicated rotation control mechanism is provided.
The upper and lower wings are each made of a flexible material such as rubber.
The middle wing is omitted, the lower edge of the trailing edge of the upper wing and the lower
The upper wing may be connected to the upper edge of the
Abrupt changes in wind direction between the wing and the lower wing
The present invention includes such a form.
You.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a wind tunnel control device according to an embodiment of the present invention.
FIG. 1 is a perspective view, and FIG. 2 is a perspective view showing a part thereof.

In the wind direction control device in the wind tunnel according to the present embodiment, a plurality of sets of elements shown in FIG.
Pairs) are arranged side by side to constitute the entire apparatus. That is, as shown in FIG. 1, the upper wing 2a and the lower wing 2a, which can rotate around the same vertical axis, are provided at the front end of the wind path on the upstream side of the terrain model 4 in the wind path in the measurement unit 3 in the wind tunnel. The wing 2b is provided with rotation control mechanisms 1a and 1b each including a dedicated motor. And
An intermediate wing 2c is provided between the upper wing 2a and the lower wing 2b so as to be rotatable around the vertical axis. Specifically, as shown in FIG. 2, a support shaft along the vertical axis is provided. 7, the respective wings 2a, 2b, 2c are relatively rotatable.

The intermediate wing 2c is connected between the upper wing 2a and the lower wing 2b via a flexible connecting member 6 which is flexible and stretchable. The upper rotation control device 1a is installed above a bearing box 5 containing a bearing for supporting a drive shaft for rotating the upper wing 2a, that is, above the air passage ceiling,
In addition, the lower rotation control device 1b is configured such that a drive shaft for rotating the lower wing 2b penetrates the air path floor,
It is provided below the floor.

Since the wind direction control device in the wind tunnel according to the present embodiment is configured as described above, the upper wing 2a and the lower wing 2b
Are controlled independently of each other by the respective rotation control mechanisms 1a and 1b.
c is a flexible connecting member 6 with the upper wing 2a and the lower wing 2b.
In tandem, the wing direction of the intermediate wing 2c is intermediate between the wing direction of the upper wing 2a and the wing direction of the lower wing 2b. In this manner, an airflow similar to a natural wind having a different wind direction according to the altitude from the ground is generated, and in particular, the intermediate wing 2c
, The effect of automatically suppressing a sudden change in the wind direction between the upper wing 2a and the lower wing 2b can be obtained.

Further, since the upper wing 2a, the lower wing 2b, and the intermediate wing 2c form a cascade in the lateral direction, the wind direction can be controlled finely even in accordance with the lateral position of the air path. become. In this embodiment, the intermediate wing 2c is 1
Although only the stages are provided, such intermediate wings may be provided in a plurality of stages vertically and the intermediate wings may be connected to each other by a flexible connecting member. In this case, the upper wing 2a and the lower wing 2b
The rapid change in the wind direction between the intermediate wings can be more appropriately mitigated by the intermediate wings of the plurality of stages.

Further, the intermediate wing provided between the upper wing 2a and the lower wing 2b also has a dedicated rotation control mechanism and can be controlled to have a more appropriate wing direction. Further, the upper wing 2a and the lower wing 2b having dedicated rotation control mechanisms 1a and 1b are respectively formed of a flexible material such as rubber, the intermediate wing 2c is omitted, and the trailing edge of the upper wing 2a is omitted. Even if the lower end and the upper end of the trailing edge of the lower wing 2b are appropriately connected, it is possible to suppress a sudden change in the wind direction between the upper wing 2a and the lower wing 2b.
Such a form is also included.

[0016]

As described above in detail, the following effects can be obtained by the wind direction control apparatus in the wind tunnel of the present invention. (1) Since the upper wing and lower wing that change the air path in the wind tunnel each have a dedicated rotation control mechanism, the rotation of the upper wing and the lower wing can be controlled independently of each other. And an airflow similar to a natural wind having a different wind direction according to the altitude from the ground is generated. (2) If the upper wing and the lower wing each form a cascade in the horizontal direction, the control of the wind direction in the air path can be performed finely even according to the horizontal position of the air path. (3) Since the intermediate wing is provided between the upper wing and the lower wing so as to be controllable in rotation, the effect of suppressing a sudden change in the wind direction between the upper wing and the lower wing can be obtained. ,
For terrain models, wind direction control according to the altitude from the ground,
You will be able to do finely. (4) When the intermediate wing is rotatably provided, the upper wing and the lower wing are connected to each other by a flexible connecting member between the upper wing and the lower wing, respectively. With each rotation control of the lower wing, the wing direction of the intermediate wing becomes an intermediate direction between the wing direction of the upper wing and the wing direction of the lower wing,
A sudden change in the wind direction between the upper wing and the lower wing is automatically suppressed. (5) Between the upper wing and the lower wing, the intermediate wing is provided in a plurality of stages up and down and is connected to each other by a flexible connecting member. A relative change in direction occurs, so that the abrupt wind direction change between the upper wing and the lower wing is more appropriately mitigated. (6) In addition, the upper wing with a dedicated rotation control mechanism and
And lower wings are each made of a flexible material such as rubber
Omit the middle wing, and the lower edge of the trailing edge of the upper wing and after the lower wing
The upper wing and the lower wing can be connected as needed.
It is possible to suppress sudden changes in wind direction between
You.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an entire configuration of a wind direction control device in a wind tunnel as one embodiment of the present invention.

FIG. 2 is a perspective view showing the basic elements of the apparatus shown in FIG.

FIG. 3 is a perspective view illustrating a schematic configuration of a conventional wind direction control device in a wind tunnel.

[Explanation of symbols]

 1a Rotation control mechanism dedicated to upper wing 1b Rotation control mechanism dedicated to lower wing 2a Upper wing 2b Lower wing 2c Intermediate wing 3 Measuring unit 4 Terrain model 5 Bearing box 6 Flexible connection member 7 Support shaft

Claims (5)

(57) [Claims] An upper wing and a lower wing that are rotatable about substantially the same vertical axis in an air path in a wind tunnel;
These upper wing and a lower wing dedicated rotation control mechanism is provided respectively to the Rutotomoni, in between the upper blade and the lower blade
In between, an intermediate wing that can be controlled to rotate around the vertical axis
A wind direction control device in a wind tunnel, which is provided . 2. The wind direction control device according to claim 1, wherein the upper wing, the lower wing, and the intermediate wing comprise:
A wind direction control device in a wind tunnel, wherein the devices are arranged side by side in a horizontal direction to form a cascade. 3. The wind direction control device in a wind tunnel according to claim 1, wherein the intermediate wing is rotatably supported on a shaft.
The wind direction control device in a wind tunnel, wherein the intermediate wing is connected to the upper wing and to the lower wing via flexible connecting members. 4. The wind direction control device in a wind tunnel according to claim 3 , wherein the intermediate wings are provided in a plurality of stages vertically, and the upper and lower intermediate wings are also connected to each other via a flexible connecting member. A wind direction control device in a wind tunnel. 5. In the wind path in the wind tunnel, substantially the same vertical
With upper and lower wings that can rotate around the axis,
These upper and lower wings have dedicated rotation controllers
And the upper and lower wings are
The trailing edge of the upper wing, each formed of a flexible material
Check that the lower end and the upper edge of the trailing edge of the lower wing are connected appropriately.
A wind direction control device in a wind tunnel.