JPH07103848A - Wind tunnel test equipment - Google Patents

Abstract

PURPOSE:To enhance the efficiency by providing a driving means for X, Y and Z axes and remotely controlling the driving means to shift a rake to a desired measuring position. CONSTITUTION:A rake fixing part 21 is provided at the forward end of a sting 20 and a rake 22, being provided with a pectinated a Pitot static pressure tube for measuring the gas flow state in a wind tunnel, is fixed at the rear end thereof to the rake fixing part 21. A control signal is sent by an operator from a controller 23 through a wiring 24 to motors 4, 12, 17 for shifting the rake 22 to an arbitrary predetermined position. When the rake 22 is set at a predetermined position, a lock mechanism is actuated to lock the motors 4, 12, 17 thus fixing the rake 22 at the predetermined position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to wind speed, wind direction,
The present invention relates to a wind tunnel test apparatus that can move a rake equipped with a Vitostatic pressure tube or the like for measuring an air flow state such as static pressure distribution from outside the wind tunnel in the vertical, horizontal, and front-back directions and arrange the rake at a desired position in the wind tunnel measurement unit. .

[0002]

2. Description of the Related Art When a new wind tunnel is manufactured or the wind tunnel is refurbished, it is necessary to measure the wind speed, wind direction, static pressure distribution, etc. in the wind tunnel to obtain the data in order to evaluate the performance of the wind tunnel. There is. For this measurement, a Prandtl type (for low speed) Pitot static pressure tube 59 shown in FIG. 9 (A), FIG. 9 (B)
Pitot static pressure tube 5 such as the supersonic Pitot static pressure tube 60 shown in FIG.
8, a yaw meter 62 shown in FIG. 9 (C), a three-hole tube 63 shown in FIG. 9 (D), a sword tip yaw meter 64 shown in FIG. 9 (E),
Alternatively, the flow velocity meter 61 such as the five-hole Pitot tube 65 shown in FIG. 9F is used. Then, in order to obtain the data efficiently, some of these measuring instruments are assembled into a rake shape and mounted on a supporting device to measure necessary data. FIG. 10 shows an example of the measurement result regarding the wind velocity distribution of the wind tunnel measurement unit 55 measured in this way. As shown in FIG. 10 and the display description in the lower part, in the wind tunnel after the wind tunnel is newly manufactured or repaired, the measurement unit 5 inside the wind tunnel wall 54 is used.
The wind velocity distribution of No. 5 is not uniform, and considerable variation occurs depending on the position, which in turn affects the accuracy of the wind tunnel test data, and therefore adjustment is required to make these uniform.

A wind tunnel may be used to check the state of the flow behind an object by a wind tunnel test. In this case, a scale model of the object is set in the wind tunnel, and a pitot static pressure tube 58 and a flow velocity anemometer 61 similar to those described above are raked behind the scale model and attached to the support device in a rake shape. And measure the necessary data. FIG. 11 shows an example of measurement of the velocity and distribution measured in this way. From the flow direction distribution and velocity distribution shown in the figure, it can be seen that two (body) vortices 57 rotating in opposite directions are formed behind the scale model.

FIG. 12 shows a conventional device for measuring such an air flow condition such as wind velocity, wind direction, and static pressure distribution in the wind tunnel. This device has a Y-axis moving wheel 45 that can move in a left-right direction (hereinafter, referred to as Y-axis direction) that is orthogonal to an airflow direction of the wind tunnel (hereinafter, referred to as X-axis), and has a support column 44, a screw shaft 42, and a support portion 46. A pedestal 41 composed of, for example, is set in a wind tunnel, and a rake 47 to which a Pitot static pressure tube 58 and a flow direction anemometer 61 are attached as springs is fixed to the tip of the support portion 46. The relative position of the rake 47 with respect to the wind tunnel is set in the up-and-down direction of the wind tunnel (hereinafter referred to as the Z-axis direction) by the rotation of the screw shaft 42 so that the support portion 4 is screwed.
6 was moved in the Z-axis direction, and the block 48 was replaced and mounted in the Y-axis direction by the Y-axis moving wheel 45 and in the X-axis direction in front of the support portion 46.

Further, the one shown in FIG. 13 is a slightly improved version of the one shown in FIG. 12, and has a Y-axis moving wheel 45 movable in the Y-axis direction, a support column 44, a screw shaft 42, and a support portion 4.
The pedestal 41 composed of 6 or the like is the same as that described above, but a pedestal 51 that is movable in the X-axis direction together with the pedestal 41 under the pedestal 41 is set in the wind tunnel, and a fixed length is provided at the tip of the support portion 46. The sting 50 is connected and the rake 47 is fixed thereto. The relative position of the rake 47 with respect to the wind tunnel is set in the Z-axis direction by the screw shaft portion 42.
Rotation of the sting 50 moves the support 46 up and down, the Y-axis moving wheels 45 move the gantry 41 in the Y-axis direction, and the X-axis moving wheels 53 move the gantry 41 together with the gantry 51 in the X-axis direction. Was moved on the wind tunnel wall 22.

However, in order to move the rake 47 to the desired measurement position of the wind tunnel measuring section, in any of the above-mentioned devices, the relative position of the rake 47 with respect to the wind tunnel is changed by the force of a person. The workability is poor, a lot of man-hours are required, a long time is required, and it is difficult to secure work safety because a heavy object is moved. In addition, there is a problem that the positioning accuracy for installing the rake 47 at a desired measurement position cannot be maintained at about 5 to 10 m / m or more, and improvement is needed. further,
It is impossible to change the relative position of the rake 47 to the wind tunnel while the wind tunnel is operating, and it is necessary to stop the wind tunnel each time the measurement position is changed, and the wind tunnel test is interrupted and the efficiency of the wind tunnel test is also reduced. However, it took a long time to conduct a wind tunnel test on a certain subject.

[0007]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the conventional apparatus, has good operability, is safe, has a high rake setting accuracy, and further interrupts wind tunnel operation. It is an object of the present invention to provide a wind tunnel test device that can efficiently perform a wind tunnel test without any problems.

[0008]

The wind tunnel testing apparatus of the present invention has the following means. (1) A first rail was laid on the inner wall of the wind tunnel, preferably on the bottom plate of the wind tunnel, in the direction of the airflow flowing in the wind tunnel (X-axis direction). (2) In addition to the first drive means for traveling on the first rail, a direction (hereinafter referred to as Y ′) orthogonal to the X-axis direction is provided.
The lower pedestal with the second rail laid was provided in the axial direction), preferably in the left-right direction of the wind tunnel. (3) A pod having a second drive means for traveling on the second rail and having its axis arranged in the X-axis direction above it is provided on the surface formed by the X and Y ′ axes. Struts provided with elevating means for elevating and lowering were provided in a direction orthogonal to each other (hereinafter referred to as Z'axis direction), preferably in the vertical direction of the wind tunnel. (4) A sting in which the rear end is attached to the front end of a pod that can be moved up and down by struts, and a measuring device that measures the airflow state of the wind tunnel measurement unit is attached, and a rake that can be held in the measurement unit is attached to the tip. Was set up. (5) Even during the wind tunnel operation, the first drive means is operated to move the position of the measuring device in the X-axis direction, and the second drive means is operated to further move the position of the measuring device in the Y′-axis direction. By operating the means, the position of the measuring device in the Z′-axis direction is set to the wind tunnel from the outside, and a remote control device is provided which can be arranged at a desired position of the wind tunnel measuring section for measuring the measuring device.

Another wind tunnel testing apparatus of the present invention has the following means in addition to the means (1) to (5). (6) The rear end of the sting was attached to the front end of the pod so as to be rotatable around the X axis. (7) The front end of the rake was attached to the sting tip so as to be rotatable about an axis provided at the sting tip portion at a right angle to the X axis.

Further, another wind tunnel test apparatus of the present invention is, in addition to the above-mentioned means (1) to (5), or above (1) to (5).
In addition to the means of (7), the following means were adopted. (8) The strut is reinforced with a reinforcing material installed between the upper end of the strut and the side part of the lower mount and / or the lower end of the strut stretched in the Y′-axis direction.

[0011]

The wind tunnel test apparatus of the present invention comprises (1) and (1) above.
By adopting the means of (5), the rake can be moved to a desired measurement position of the wind tunnel measurement unit by remote control from outside the wind tunnel,
Since the measurement can be performed at that position, the workability is improved, and the measuring device can be set at the measuring position within a short time, safely, and safely even during wind tunnel operation, with a small amount of man-hour. In addition, the device can be laid accurately at a specific position in the wind tunnel.
Since it is regulated and installed by the second rail and the elevating means, the positioning accuracy of the measuring device is improved. In addition, the time required to set the measuring device is shortened, and the measuring device can be reset to the measuring position even during wind tunnel operation, improving the efficiency of the wind tunnel test and completing the wind tunnel test for a specific theme in a short period of time. Therefore, accurate test data can be obtained.

In addition, in the wind tunnel test apparatus of the present invention, in addition to the function of (1) above, by adopting the means of (2), (6) and (7), the degree of freedom of movement of the measuring apparatus is increased. The setting to the measurement position can be performed more finely and quickly, and the device can be downsized.

Furthermore, another wind tunnel test apparatus of the present invention adopts the means of (3) and (8) in addition to the operation of (1) or the operations of (1) and (2). The measurement device set at the measurement position can be firmly held at that position, the accuracy of the test data can be improved, and the wind tunnel test at a higher wind speed can be performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the wind tunnel test apparatus of the present invention will be described below with reference to the drawings. 1 and 2 are views showing a first embodiment of the wind tunnel test apparatus of the present invention, and FIG.
2 is an overall perspective view according to this embodiment, FIG. 1B is an operation block diagram according to this embodiment, FIG. 2A is a block diagram showing a remote operation according to this embodiment, and FIG. (B) shows a flowchart for each.

As shown in FIG. 1, a rail 3 as a first rail is attached via a rail fixture 2 in the X-axis direction of the wind tunnel floor surface 1 as the wind tunnel inner wall of the wind tunnel measuring unit. A lower mount 5 is provided on the rail 3 so as to be movable in the X-axis direction by a motor 4 as a first driving means provided at the lower end. Lower mount 5 is Y
The cross girder member 6 is arranged in the axial direction, that is, between the left and right rails 3, 3 and the supporting members 7 and 8 are arranged in the X axis direction and the Z axis direction for supporting the cross girder member 6. A guide 9 is provided on the side portion of the cross beam member 6 provided at the lower end so that the lower end of a strut 11 described later can slide, and at the top of the cross beam member 6 provided at the upper end. Has a rail 10 as a second rail laid in the Y-axis direction.

Further, on the rail 10, a traveling portion 13 is arranged to be able to travel on the rail 10 in the Y-axis direction by a motor 12 as a second driving means, and in the X-axis direction (front, rear) of the traveling portion 13. ) At the end, a pillar 14 is erected in the direction of the Z-axis.
Struts 11 are provided. Running section 1
3 The lower end of the column 14 at the front end is the guide 1 of the lower mount 5.
By engaging with 0, the strut 11 travels smoothly and the connection between the strut 11 and the lower pedestal 5 is reinforced. An axial center is arranged in the Z-axis direction between the upper surface of the running portion 13 between the front and rear columns 14 and the connecting member 15 spanned between the upper ends of the columns 14 and 14. A ball screw shaft 16 is provided. Further, the ball screw shaft 16
A motor 17 for rotating the ball screw shaft 16 is installed on the upper portion of the connecting member 15 in connection with the upper end of the connecting member 15.

Further, the strut 11 is provided with a pod 18 which is fitted to the side surfaces of the columns 14 provided at the front and rear ends and is movable in the Z-axis direction. The pod 18 is formed in a spindle shape, is attached to the strut 11 with its axis aligned in the X-axis direction, and has a female screw 19 that is screwed with the ball screw shaft 16 at the center. Motor 17,
The ball screw shaft 16 and the female screw 19 of the pod 8 constitute an elevating means. An engaging hole is formed at the tip of the pod 18, and the rear end of the engaging hole is inserted to hold the axis in the X-axis direction and the sting 20 is mounted. A rake mounting portion 21 is provided at the tip of the sting 20, and a rear end of the rake 22 in which a Pitot static pressure tube or the like for measuring the airflow state of the wind tunnel is installed in a comb tooth shape is attached to the mounting portion 21. .

Further, outside the wind tunnel, the motors 4, 12,
A control device 23 is provided as a remote control device that can drive 17 remotely.

Since the wind tunnel test apparatus of this embodiment is constructed as described above, an operator operates the control device 23 to output a control signal from the control device 23 as shown in FIG. It is transmitted to the motors 4, 12, 17 via 24, and the power of these motors 4, 12, 17 allows the rake 22 to move to any desired position. When the rake 22 is set in place,
A lock mechanism (not shown) is activated to operate the motors 4, 12, 1
7 are each locked and the rake 22 is fixed in position.

Further, a detailed description will be given by taking the motor 4 for moving in the front-back direction as an example. As shown in FIG. 2A, the operator operates the personal computer 25 in the control unit 23 to move the lower mount 5. Then, a digital command 26 for setting the rake 22 to a desired position in the X-axis direction is transmitted to the motor 4 via the control unit 27, and the motor 4 operates so that the lower pedestal 5 is moved on the rail 3 in the X-axis direction. Can be moved to. The rotation output of the motor 4 is detected by the encoder 28, and this data is sent to the control unit 27, where the digital command 26 of the personal computer 25 is compared with the detection value of the encoder 28 to control the position in the front-back direction. To do. FIG. 2B shows these flowcharts.

The above description is for the motor 4, but the same applies to the motors 12, 17 and other motors described later.

As described above, according to this embodiment, the rake 22 position can be set with labor saving as compared with the conventional apparatus, and the rake 22 position can be set remotely, and the direction is accurately determined to the predetermined position of the wind tunnel. Since the set position of the rake 22 can be controlled by the rails 3, 10 and the ball screw shaft 16 and the motors 4, 12, 17, the positioning can be made more accurate. Further, the setting accuracy can be set to about 1 m / m. Further, since the rake 22 can be set remotely, the rake 22 can be moved even during the wind tunnel operation, which contributes to the efficiency improvement of the wind tunnel test.

Next, FIG. 3 shows a second embodiment of the wind tunnel test apparatus of the present invention.
It is a figure which shows an Example, FIG.3 (A) is the whole perspective view which concerns on this Example, FIG.3 (B) is a block diagram which concerns on this Example. The same reference numerals as those in the first embodiment described above are the same as those in the first embodiment, and the description thereof will be omitted. Differences from the first embodiment will be described. A sting 29 that is rotatable about the X axis is attached to the tip of the pod 18 that can move up and down the outer surface of the strut 11. The sting 29 is rotated by a motor 30 as a sting rotating means installed in the pod 18, and a shaft 31 oriented in the Y-axis direction is installed at the tip of the sting 29 when the rotation of the sting 29 is zero. Has been done. The rear end of the rake 22 is pivotally supported by a shaft 31, and the sting 29 having its axis centered in the X-axis direction is rotated to move the rake 22 in an arbitrary direction in the YZ axis plane. Can be set and X
The rake 22 can be set at a predetermined angle also in the axial direction.

With the above configuration, the X-axis direction, the Y-axis direction,
The rotation about the Z-axis direction and the rotation about the X-axis are performed by the power of the motors 4, 12, 17, and 30, respectively. That is, a control signal is transmitted from the control device 23 by the operation of the control device 23 by the operator and transmitted to the motors 4, 12, 17, 30 via the wiring 24, and the control signals of these motors 4, 12, 17, 30 are transmitted. The power allows the rake 22 to move to any desired position. These operations are as shown in the block diagram of FIG.

In the present embodiment, the turning and setting of the rake 22 around the shaft 31 is performed manually by the worker entering the wind tunnel before operating the wind tunnel. In this way, the rake 22 is also preset with respect to the sting 29. In other words, the rake 22 can be arranged so as to be inclined with respect to the X-axis direction, so that even if the airflow is largely uneven, This is convenient because it is possible to prevent errors in the static pressure pipe and the like.

That is, in the Pitot static pressure tube 58 described above with reference to FIGS. 9A and 9B, when the angle of attack α formed by the arrangement direction of the Pitot static pressure tube 58 and the air flow direction becomes large, it is shown in FIG. As described above, an error velocity ΔV occurs in the air velocity V measured by the Pitot static pressure tube 58. However, as shown in the embodiment, if the rake 22 is preset for a certain angle, the velocity error ΔV.
By eliminating V, it is possible to accurately measure the air velocity. Further, in the present embodiment, compared with the above-mentioned first embodiment,
The degree of freedom of the rotation of the rake 22 around the axis 31 and the rotation around the X axis is increased, which facilitates the wind tunnel test. That is, if the rake 22 is rotated about the X axis by 90 ° and moved in the Y axis direction, the amount of movement in the Y axis direction can be reduced.

Next, FIG. 5 shows a third embodiment of the wind tunnel test apparatus of the present invention.
It is the whole perspective view showing an example. In this embodiment, the same reference numerals as those in the first and second embodiments are the same as those in these embodiments, and the description thereof will be omitted. In the present embodiment, the pod 18 has a base end portion rotatably around the X axis so that the pod 18 can be turned by remote operation of the motor 33 as a support portion turning means provided inside the pod 18. The support portion 32 is provided. The rear end of the sting 20 arranged in the X-axis direction is attached and fixed to the front end of the support portion 32.

As a result, as compared with the second embodiment described above,
The movement of the support portion 29 in the Y-axis direction and the Z-axis direction can be reduced by the length of the arm, and therefore the height of the strut 11 can be reduced, which is convenient. In addition, it has the same functions, actions, and effects as those of the second embodiment described above.

Next, FIG. 6 shows a wind tunnel test apparatus according to a fourth embodiment of the present invention.
It is the whole perspective view showing an example. In this embodiment, the same reference numerals as those in the first to third embodiments are the same as those in these embodiments, and the description thereof will be omitted. In the present embodiment, the sting 20 fixedly provided in front of the tip of the mounting portion 32 in the third embodiment is used as a sting 29 that is rotatable around the X axis, and the sting 20 is provided in front of the tip of the mounting portion 32. The point that they are arranged is different.

Along with this, the motor 3 as a sting rotating means for rotating the sting 29 inside the mounting portion 32.
4 is provided. The sting 29 mounted on the support portion 32 of the present embodiment is different from that of the third embodiment in that it can be rotated around the X axis at the tip of the support portion 32 by the power of the motor 34, and the motor 33 supports the support portion 32. Rotating sting 29
If the motor 34 corrects the rotation around the X-axis due to the revolution of the, the position can be set to the same position without changing the arrangement relationship of the rake 22 in the Z-axis direction, which is convenient. The operation of the motor 34 is performed by the operator control device 23 as in the first embodiment.
The operation is performed. For the other, the above-mentioned third
It has the same functions, actions, and effects as those of the embodiment.

Next, FIG. 7 shows a fifth embodiment of the wind tunnel test apparatus of the present invention.
It is the whole perspective view showing an example. This embodiment is characterized in that a reinforcing member 35 is further provided in the above-mentioned fourth embodiment shown in FIG. The reinforcing member 35 has its upper end fixed to a connecting member 15 that connects the upper ends of the struts 14 and 14 erected at the front and rear ends of the strut 11, and the strut 11 that travels on the second rail 10 also. The running portion 13 of the strut 11 is stretched in the Y-axis direction, and the lower end of which is fixed is provided on both sides of the strut 11. If the strut 11 can be reinforced in this manner by installing the reinforcing member 35, it becomes possible to perform a test up to a wind velocity in a larger wind tunnel, which is convenient. This reinforcement can also contribute to making the strut 11 higher. Although the present embodiment has been described by applying to the above-mentioned fourth embodiment, it can be similarly applied to the above-mentioned first to third embodiments.

Further, FIG. 8 is an overall perspective view showing a sixth embodiment of the wind tunnel test apparatus of the present invention. In the present embodiment, in addition to the above-described fourth embodiment, the roller 36 is arranged at the uppermost end of the supporting members 7 arranged in the X-axis direction at the left and right ends of the lower mount 5, and the upper end of the strut 11 is arranged. A roller 36 is also arranged at the upper end of the motor 17 arranged in the above position, and a flexible band 37 as a reinforcing member is wound between the rollers 36 arranged in a triangular shape. Tightening device 3 provided below
The both ends of the band 37 are wound by 8
The wind tunnel test device is characterized in that it can be tightened or loosened. To loosen and tighten the band 37, it is not always necessary to wind up both ends of the band 37, one end is wound up, and the other end is lower base 5.
It is also possible to reduce the number of rollers 36 by fixing the rollers 36 at appropriate positions.

Also in this embodiment, when the strut 11 is moved in the left-right direction, the tightening device 3 for the band 37 is used.
8, the band 37 is loosened, the band 38 is slightly loosened, and after the strut 11 is moved in the left-right direction, the tightening device 38 is operated to tension the band 37 and hold down the strut 11. , Fix it so that it does not move. The tightening device 38 is
Band 3 by pulling out or retracting a rod-shaped object
You may loosen 7 or hold it down. Of course, it is desirable to operate the tightening device from outside the wind tunnel by operating the control device 23 by the operator. The material of the band 38 may be any material such as leather, synthetic fiber, natural fiber and steel.

Above, the first to fifth of the wind tunnel test apparatus of the present invention
Although the embodiments have been described, the wind tunnel test apparatus of the present invention is not limited to these respective embodiments, and it goes without saying that combinations of the respective embodiments and those within a range conceivable from the respective embodiments are included. It is a waste. For example, the example in which the first rail 3 is laid on the wind tunnel floor surface 1 is shown, but this may be a side wall of the wind tunnel interior, and the wind tunnel floor surface 1 and the first rail 3 on the wind tunnel side wall are provided on each side, It is also possible to incline the direction of 14 with respect to the vertical plane.

[0035]

As described in detail above, the wind tunnel test apparatus of the present invention can be installed from the outside of the wind tunnel at the desired measurement position of the wind tunnel measurement unit by the configuration according to claim 1. For this reason, workability is improved, work safety is further facilitated without requiring a large number of workers. Moreover, the measurement position can be changed without stopping the wind tunnel, and the wind tunnel operating efficiency can be improved. Further, the accuracy of the arrangement of the measuring device at the measuring position is significantly improved, and it becomes possible to obtain high-quality test data, which in turn contributes to the improvement of the performance of the actual machine.

According to another aspect of the wind tunnel test apparatus of the present invention, in addition to the above effects, the measurement apparatus can be quickly installed at the measurement position, and measurement at a fine measurement position can be achieved. The device can be arranged. Furthermore, the amount of movement of the measuring device to the measuring position can be reduced, the measuring time can be shortened, the efficiency of the wind tunnel can be improved, and the height of the lower pedestal and struts can be reduced, so that the device can be downsized.

Further, according to another wind tunnel test apparatus of the present invention, the configuration according to claim 3, in addition to the effect according to the configuration according to claim 1 or the effect according to the configurations according to claim 1 and claim 2, a measuring device is provided. It can be firmly fixed to the measurement position and held at that position, which contributes to improving the accuracy of the test data and enables the wind tunnel test at higher wind speeds.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of a wind tunnel test apparatus of the present invention, FIG. 1 (A) is an overall perspective view, and FIG. 1 (B) is a block diagram showing its operation;

FIG. 2 is a diagram showing an operation by remote control of FIG.
FIG. 2A is a block diagram showing a remote control operation, FIG.
(B) is a flow chart showing the flow of operation,

3 is a diagram showing a second embodiment of the present invention, FIG.
3A is an overall perspective view, FIG. 3B is a block diagram showing the operation,

FIG. 4 is a diagram showing an angle of attack of a Pitot static pressure tube and a measurement speed error;

FIG. 5 is an overall perspective view showing a third embodiment of the present invention,

FIG. 6 is an overall perspective view showing a fourth embodiment of the present invention,

FIG. 7 is an overall perspective view showing a fifth embodiment of the present invention,

FIG. 8 is an overall perspective view showing a sixth embodiment of the present invention.

9A and 9B are views showing a measuring device for measuring an airflow state, which is applied to the wind tunnel test device of the present invention, wherein FIG. 9A is a sectional view of a Prandtl type Pitot static pressure pipe, and FIG. 9C is a sectional view of the sonic type Pitot static pressure tube, FIG. 9C is a yaw meter sectional view, FIG. 9D is a perspective view and sectional view of the three-hole tube, and FIG. 9E.
Is a sword tip yawometer cross-sectional view, FIG. 9 (F) is a perspective view of a five-hole pitot tube,

FIG. 10 is a diagram showing an example of a wind speed distribution of a wind tunnel measurement unit,

FIG. 11 is a diagram showing an example of a flow direction distribution and a flow velocity distribution behind the model;

FIG. 12 is a side view showing an example of a conventional wind tunnel test device,

FIG. 13 is a side view showing another example of the conventional wind tunnel test device.

[Explanation of symbols]

 1 Inner wall of wind tunnel (floor surface of wind tunnel) 2 Rail mounting tool 3 First rail 4 First driving means (motor) 5 Lower mount 6 Cross girder material 7 Support material 8 Support material 9 Guide 10 Second rail 11 Strut 12 Second 2 Driving means (motor) 13 Strut running part 14 Strut support 15 Strut connecting material 16 Ball screw shaft 17 Elevating means (motor) 18 Pod 19 Female screw 20 Sting 21 Lake mounting part 22 Lake 23 Remote control device (control device) ) 24 wiring 25 personal computer 26 digital command 27 control unit 28 encoder 29 sting 30 sting turning means (motor) 31 shaft 32 support part 33 support part turning means (motor) 34 sting turning means (motor) 35 stiffener 36 roller 37 Reinforcement material (band) 38 Tightening device

Front Page Continuation (72) Inventor Yokota Showa 1 At 60, Kutanesho, Iwatsuka-cho, Nakamura-ku, Nagoya-shi Nakabishi Engineering Co., Ltd.

Claims (3)

[Claims] 1. A second rail laid perpendicular to the traveling direction, comprising a first rail laid in the airflow direction of the inner wall of the wind tunnel and a first drive means for traveling on the first rail. A lower pedestal provided with rails and a second drive means for traveling on the second rail are provided, and a pod having an axial direction arranged in the airflow direction is installed in the pod of the first rail and the second rail. A strut having an elevating means for elevating and lowering in a direction orthogonal to the direction, a sting having a rear end attached to the front end of the pod and a rake having a measuring device attached to the tip, and the first and second drive A wind tunnel test device, comprising: a remote control device for moving the measuring device to a measurement position by operating the means and the elevating device from outside the wind tunnel. 2. The rear end of the sting is rotatably mounted on the front end of the pod, and the rake is mounted on the front end of the sting with the rear end rotatably supported by a shaft orthogonal to the air flow direction. The wind tunnel test apparatus according to claim 1, wherein: 3. Reinforcement engaged with at least one of a side portion and a lower end portion of a strut of which the upper end is engaged with the upper end of the strut and the lower end is stretched in a direction orthogonal to the airflow direction. The wind tunnel test apparatus according to claim 1 or 2, which is reinforced with a material.