JPH08227267A - Simulative experiencing device for free dive - Google Patents

Abstract

PURPOSE: To provide a simulative experiencing device for free dive which enables a free dive trainee to relatively receive diagonal wind, to make training against a fluctuation in this wind and to make dive training under conditions approximate to the actuality. CONSTITUTION: Plural vanes 81 are formed respectively oscillatable and are disposed in parallel within a lower blasting path 50 near a blasting port 25 of a swimming chamber 23 where a swimmer 1 is maintained in a floating state by the air blowing upward from below by a fan 52. This device has a vane driving mechanism for oscillating and driving these vanes 81.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to forming an ascending air current from a lower part of a floating space to an upper part thereof by blowing air from an air blowing device, and maintaining the swimmer in the floating space by the ascending air current. The present invention relates to a configured free-fall simulation experience device.

[0002]

2. Description of the Related Art In the descent by a parachute, the descent path is controlled by the posture in a free descent state before the parachute is opened to reach near the descent target point, and then the parachute is opened to descend and land.
Conventionally, the practice of posture during the free descent was to actually descend after performing basic practice on the ground, but it is completely different from the practice on the ground and the actual free descent state. An accident sometimes happened during the descent practice.

Therefore, recently, a free descent simulation experience device which enables a simulated experience of a free descent state has been developed and used for practicing the free descent state. This is configured by guiding the air blown from the blower so as to pass from the lower part of the floating space to the upper part, and by making the wind speed approximately equal to the relative speed of the human being and the air during free descent, the practitioner can It is designed to be able to float in the floating space by buoyancy. As a result, it was possible to experience and practice the actual descent condition for a long time, and it became possible to acquire techniques that were not possible on the ground.

As such a wind tunnel device, there is, for example, a device disclosed in Japanese Utility Model Laid-Open No. 3-116883, which is provided in the blower circulation path 90 as shown in the conceptual diagram of FIG. The blower 91 (blowing device) circulates the airflow in the blast circulation path 90, and a swimming area 93 (floating space) is provided at the rising blast part. In the configuration shown in the figure, a bypass air passage 94 connects the diagonally lower side of the swimming area 93 and the circulation passage 90 on the upstream side, and a small blower 95 is provided in the bypass air passage 94. The wind is allowed to flow into the swimming area 93 from diagonally below by the driving of the above, and a crosswind state can be generated.

In the circulation type wind tunnel device which circulates the air in the circulation path as described above, there is a problem that the temperature of the circulating air rises due to the heat generated by the blower device, and therefore the wind tunnel device for a free-fall simulation experience. As such, a non-circulating type which does not have such a problem is suitable. As a non-circulating wind tunnel device for a free-fall simulation experience, an outer wall structure surrounds an internal structure that forms a floating space to form an air intake passage between the two, and the entire circumference of the outer wall structure is surrounded. An air intake is provided over the air, so that the air introduced from the air intake by the air blower provided under the floating space passes through the air intake passage from below to above the floating space and is then discharged. There is one configured in.

[0006]

In the above-mentioned conventional free-fall simulation experience device, since the swimmer holds the swimmer in a floating state by the rising wind, the swimmer receives only a relatively simple rising wind. Corresponds to a descent in completely calm air, but descent under such conditions was extremely rare and was different from the actual descent situation. That is, in actual free descent, wind is blowing in the descent path to some extent, and the descender is the direction in which the relative upwind received by the descent and the blowing wind are combined. Will receive the wind.

That is, the wind relatively received by the descendant is not a simple upward wind, but an oblique wind, which is remarkable especially when the wind is blowing horizontally. The strength and direction of the wind is constantly changing and also changes depending on the altitude,
The wind received by the descendants also changes from time to time.

Further, even when the descendant is not descending vertically, the descender will receive a relatively oblique wind.

As described above, the practice of receiving a relatively oblique wind and the fluctuation of the wind cannot be performed by the conventional free descent simulation experience device.

The present invention has been made in view of the above problems, and allows a free-fall practitioner to practice a relative oblique wind and further fluctuations in the wind. The purpose is to provide a free descent simulation experience device that can perform descent practice under conditions that are close to actual conditions.

[0011]

In the free-fall simulation experience device of the present invention which achieves the above object, an ascending air current is formed from a lower part of a floating space to an upper part of the floating space by the air blowing of the air blowing device, and the ascending air current causes the ascending air space to move. In which the swimmer is maintained in a floating state, a blower direction changing member provided in a blower path near the blower port to the floating space and the blower direction changing member are displacement-driven. It is characterized in that it is provided with a mixed flow / fluctuation air generation device constituted by an air blowing direction changing drive means for changing the air blowing changing direction.

Further, in the air blowing direction changing member, a plurality of wing plate members each having a bilaterally symmetrical cross-sectional shape are pivotally supported so as to be swingable at substantially the center of gravity position of the cross section, and in the same plane orthogonal to the air blowing path. And the air-blowing-direction changing drive means is configured to swing and drive the blade member.

[0013]

An air blowing direction changing member provided in the air blowing path in the vicinity of the air blowing port to the floating space, and an air blowing direction changing driving means for displacing the air blowing direction changing member to change the air blowing changing direction. In the apparatus configured with a mixed flow / fluctuation air generation device, the blowing direction changing member changes the blowing direction to the floating space, and the blowing direction changing drive means displaces and drives the blowing direction changing member. The direction in which air is changed by the direction changing member is changed. Further, in the air flow direction changing member, a plurality of wing plate members each having a symmetrical cross-sectional shape are pivotally supported so as to be swingable at substantially the center of gravity of the cross section, and are arranged in parallel in the same plane orthogonal to the air flow path. The blasting direction changing drive means is configured to oscillate the wing plate member. In the wing plate member, the wing plate member regulates the air flow direction to change the air blowing direction to the floating space, and the air blowing direction changing drive. The means swings and drives the blade member to change the direction in which the blade member changes the air flow.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an external perspective view of an embodiment of a free-fall simulation experience device according to the present invention, FIG. 2 is a vertical sectional view thereof, and FIG. 3 is a sectional view taken along line AA of FIG.

The illustrated free descent simulation experience device is an octagonal prism having a predetermined height as a whole, and the lower end portion thereof is installed by being buried in the ground at a predetermined depth. An octagonal columnar internal structure 20 similar to the external shape is provided in the center of the interior, and an outer surface 21 of the internal structure 20 and an outer wall 1 which is an outer wall structure.
A space having a predetermined width is formed between the inner surface of 0 and the inner surface of 0 to surround the entire circumference except the upper end portion, and this constitutes the intake passage 30. It should be noted that the present embodiment is an example in which the device is configured in an octagonal prism shape, but the invention is not limited to this, and other polygonal prisms or cylinders may be used and can be appropriately changed.

The intake passage 30 includes an outer wall 10 and an internal structure 2.
It is partitioned by a partition plate 31 provided by connecting the vertices of an octagon of 0, and is divided into eight sections in the circumferential direction. Reference numeral 33 in the drawing denotes a silencer provided in the intake passage 30. Further, in the intake passage section 32 to which the gust duct 40 serving as a lateral wind generating communication passage, which will be described later, is connected, the silencer 33 disposed above the opening of the gust duct 40 (upstream side in the intake direction).
An intake passage shutter 34 that can open and close the intake passage section 32 is provided on the upstream side of the.

An exhaust port 11 is formed on the outer wall 10 at the uppermost portion adjacent to the top surface over the entire circumference except for the octagonal apex, and the intake port 12 is located slightly above the center in the height direction.
Is formed over the entire circumference except for the apex of the octagon. In addition, the formation position of the intake port 12 is determined by the gust duct 40.
Is a predetermined amount above the installation position.

An outer surface 21 of the inner structure 20 constitutes an inner surface of the intake passage 30, and a swimming chamber 23 as a floating space surrounded by a peripheral wall 22 in an octagonal column shape similar to the outer shape is formed in the inner center of the inner structure 20. Between the swimming room 23 and the outer surface 21, there is provided a corridor section 24 that extends around the swimming room 23 on the same plane as the floor surface of the swimming room 23. Further, a corridor portion is not provided between the predetermined one surface of the octagon and the corresponding intake passage section 32, and is closed, and the gust duct 40 that connects the swimming chamber 23 and the intake passage section 32 is provided here. Has been formed. The corridor section 24 is provided with a control room 27 (shown in FIG. 3) that controls all of the free-fall simulation experience device.

The swimming room 23 can be accessed through a corridor 24 through a door (not shown) provided on the peripheral wall 22 of the swimming room 23. The entrance and exit provided through the intake passage 30 in the corridor 24. It is possible to enter and exit from the outside via a passage (not shown) leading to 13 (shown in FIG. 1).

In the swimming room 23, the ventilation port 2 is provided at the center of the floor surface.
5, the exhaust port 26 is formed in the center of the top surface, the air outlet 25 is connected to the lower air passage 50, and the outlet 26 is connected to the upper air passage 60. Further, the gust duct 40 described above is opened on one surface of the peripheral wall 22.

The lower air passage 50 is vertically extended below the swimming chamber 23 and is connected to the intake passages 30 of all the compartments via the side passage space 51 along the bottom of the free-fall simulation experience device. In addition, an axial flow type blower 52 is arranged at the connecting portion so that the blowing direction is the upper side (the swimming room 23 side).

In the lower air passage 50 near the air outlet 25,
A rectifying honeycomb 53 is provided and the swimming chamber 2 is provided.
A wing plate 81 as an air flow changing member of the mixed flow / fluctuation air generator 80 is disposed on the third side, and a fall prevention net 55 is doubly stretched on the side of the swimming room 23.

As shown in FIG. 4, the mixed flow / fluctuation air generator 80 has a plurality of (six in the figure) blades 81 extending in the lower air passage 50 in the lower air passage 50. The blades are arranged in parallel in a plane orthogonal to the direction at predetermined intervals, and are provided with a blade driving mechanism 85 as an air blowing direction changing drive means for swingingly driving the blade 81.

The wing plate 81 has a substantially spindle shape whose cross-sectional shape is symmetrical, and is pivotally supported by a wall surface forming the lower air passage 50 via a rocking shaft 81A at the center of gravity of the cross-section. There is.

The blade drive mechanism 85 is provided so as to penetrate through all the blade 81 installation areas, and the ends of the operating rods 86 to which the lower ends of the blades 81 are pivotally attached, respectively, and the drive motor 8.
The eccentric position of the rotary plate 88 fixed to the rotary shaft 7 is connected via the connecting rod 89. Connecting rod 8
9, both ends of which are the ends of the operating rod 86 or the rotary plate 88.
Is pivotally attached to.

A mixed-flow / fluctuation-wind generator 8 having such a configuration
At 0, rotation of the drive motor 87 causes rotation of the rotating plate 88.
The operating rod 86 is driven to move substantially in the longitudinal direction via the connecting rod 89, and the wing plate 81 is driven to swing. Drive control of the mixed flow / fluctuation wind generator 80 (that is, rotation control of the drive motor 87 of the blade drive mechanism 85).
Is performed by a control device (not shown) provided in the control chamber 27.

The upper air passage 60 extends vertically upward, and is connected to an exhaust space 61 which is horizontally formed in the site where the exhaust port 11 is formed along the top surface of the free fall simulating experience device. Also, the opening to the swimming room 23 (the discharge port 26)
A suction prevention net 62 is stretched over. 6 in the figure
Reference numeral 3 is a muffler provided in the upper air passage 60.

In the free-fall simulation experience device configured as described above, the air sucked from the air intake 12 via the intake passage 30 by the drive of the blower 52 causes the lower blower passage 5 to move.
It blows up into the swimming room 23 from the ventilation opening 25 through 0, passes the inside of the swimming room 23, and from the upper ventilation path 60 to the exhaust space 61.
Through the exhaust port 11 to the outside. Swimming room 23
The air blown into the inside is rectified by the rectifying honeycomb 53 and made stable without fluctuation. Swimming room 23
The flow velocity inside is set to be approximately 70 m / sec, which is approximately equal to the relative velocity with the air during free fall, so that the swimmer located in the rising airflow does not fall or rise and is in a floating state. You can experience the free fall state.

Here, the inflow airflow into the swimming chamber 23 is guided by the vanes 81 of the mixed flow / fluctuation airflow generating device 80 provided in the lower airflow passage 50 near the airflow outlet 25, and accordingly,
By changing the angle of the blade 81 by the blade driving mechanism 85, the airflow into the swimming room 23 can be changed obliquely. That is, as shown in FIG. 2, when the wing plate 81 is in the vertical state, the air current is blown up vertically into the swimming chamber 23, and the wing plate drive mechanism 85 swings the wing plate 81, which is a partially enlarged view. When the upper end thereof is driven to oscillate to the right in the figure as shown in, the air flow becomes a diagonal flow to the right along the blade 81 as indicated by the arrow in the figure. As a result, it is possible to practice descent under the condition of constant horizontal wind, and also to experience the state of descending diagonally when there is no wind.

Further, the blade 81 is driven by the blade driving mechanism 85.
It is possible to create a situation in which the wind direction changes cyclically by swinging left and right in a predetermined cycle, and it is possible to perform descent practice under such conditions. Furthermore, by controlling the rotation of the drive motor 87 of the blade driving mechanism 85 irregularly, it is possible to create a situation in which the wind direction changes irregularly, and it is possible to practice descent in such a situation.

FIG. 6 shows an embodiment of a wing plate drive mechanism for swinging and driving the wing plate 81, which has a different structure from the above. This is configured such that the swing shaft 81A of each wing plate 81 is directly connected to the rotation shaft of the pulse motor 82, and each wing plate 81 independently swings at an arbitrary angle by the rotation of each pulse motor 82. It can be driven dynamically. That is, in this configuration, the pulse motor 82 constitutes a blade driving mechanism.

According to this structure, by controlling the drive of the pulse motor 82 of each blade 81, the phase of each blade 81 can be shifted and rocked. This allows
It is possible to create different sloping wind conditions depending on the location in the swimming room 23. Further, as shown in FIGS. 7A to 7E, by fluctuating each wing plate 81 by slightly shifting the phase, it is possible to create a fluctuating wind state in which the wind speed changes, and further, the period can be arbitrarily set. It is possible to set irregularly, and it is possible to reproduce the state of free descent in a complicated wind that is close to reality. Therefore, it becomes possible to practice extremely advanced descent techniques, which dramatically improves the practice efficiency.

By the way, in this embodiment, the lower air duct 50
The rectifier honeycomb 53 is provided on the upstream side in the blowing direction with a rapid velocity change louver 56 capable of opening and closing the lower air passage 50, and on the upstream side there is a rapid velocity change bypass duct 70 opened and closed by the door members 72 and 73. Connected,
The louver 56 for sudden speed change provided in the lower air passage 50 is closed, and the door member 7 of the bypass duct 70 for sudden speed change is closed.
By opening 2, 73, it becomes possible to interrupt the blowing of air into the swimming room 32 without stopping the driving of the blower 52 and allow the swimmer to experience the state of opening the umbrella from the free-fall state. There is. In this case, the swimmer 1 needs to tie the suspension line 2 to the upper part of the swimming room. That is, by closing the louver 56 for sudden change in speed and simultaneously opening the door members 72, 73 provided at the opening of the bypass duct 70 for sudden change in speed from the above-described normal free-fall simulation experience state, the swimming room 23 is opened. The lower air passage 50 that communicates with the louver 56 for sudden speed change is blocked to prevent air from being blown into the swimming chamber 23, and the air is circulated to the intake passage 30 through the bypass duct 70 for sudden speed change. As a result, the buoyancy generated by the air blow causes the swimmer 1 who was in a floating state in the swimming chamber 23 to fall until being suspended and supported by the hanging rope 2 because the buoyancy is lost. In this way, the state in which the fall is blocked by the hanging rope 2 is just the same as the state in which the umbrella is opened from the free fall at the time of the actual descent, and the umbrella open state can be simulated. The air blown from the blower 52 whose passage (lower air passage 50) to the swimming chamber 23 is blocked by the sudden speed change louver 56 is recirculated to the intake passage 30 through the rapid speed change bypass duct 70 as described above. The introduction of new air from the air intake port 12 is stopped, and the ventilation is continued, so that the blower 52 is not overloaded.

The swimming chamber 23 and the intake passage 30 described above are also provided.
In the intake passage section 33A, to which the gust duct 40 that communicates with the (intake passage section 32) is connected, the silencer 34 disposed above the opening of the gust duct 40 (upstream side in the intake direction).
An intake passage shutter 35 that can open and close the intake passage section 32 is provided on the upstream side of the
The gust duct shutter 4 that can be opened and closed at both openings on the side of the swimming chamber 23 and the side of the intake passage 33A.
1, 42 are provided, and the intake passage shutter 3
5 and by opening and closing the gust duct shutters 41 and 42, it is possible to create a crosswind condition in the swimming room 32, and to experience the situation of being crosswind-induced during free descent. There is. That is, the intake passage shutter 3 provided in the intake passage section 33 to which the gust duct 40 is connected.
5 is closed, and at the same time, the gust duct shutters 41 and 42 provided in the gust duct 40 are opened to prevent intake from the intake passage section 33A and to swim downstream of the intake passage shutter 35 in the intake passage section 33. The chamber 23 communicates with the gust duct 40 to allow ventilation, and air flows from the swimming chamber 23 to the intake passage section 33A via the gust duct 40 to allow the gust duct 4 to flow from the swimming chamber 23.
0, the intake passage section 33A, the side passage space 51 and the lower air passage 50 (blower 52) circulate, and a cross wind in the direction toward the gust duct 40 is generated in the swimming chamber 23 to allow free fall. This makes it possible to practice the response when a crosswind is received.

That is, according to the configuration of this embodiment, it is possible to learn a complicated and sophisticated free descent technique on the ground.

[0036]

As described above, the blower direction changing member provided in the blower path near the blower port to the floating space and the blower for changing the blower changing direction by displacing and driving the blower direction changing member. In the apparatus configured by including the mixed flow / fluctuation air generation device configured by the direction changing driving means, the blowing direction changing member changes the blowing direction to the floating space, and the blowing direction changing driving means blows air. By displacing and driving the direction changing member, the direction in which the air direction is changed by the direction changing member can be changed, which makes it possible to practice free descent in a horizontal wind condition, and at a slant in the absence of wind. You can practice falling. Further, in the blowing direction changing member, a plurality of blade members having a symmetrical cross-sectional shape are pivotally supported so as to be swingable at substantially the center of gravity position of the cross section, and are parallel to each other in the same plane orthogonal to the blowing path. When the blasting direction changing drive means is arranged to oscillate and drive the wing plate member, the wing plate member regulates the air flow direction to change the air blowing direction to the floating space, and at the same time, blows air. The direction changing drive means can swing the wing plate member to change the blast change direction by the wing plate member, and can create a state close to the actual wind in which the wind direction and the wind speed fluctuate. As a result, it is possible to experience a free fall state in a windy state, and it becomes possible to practice more advanced free fall techniques.

[Brief description of drawings]

FIG. 1 is an external perspective view of a free-fall simulation experience device according to the present invention.

FIG. 2 is a vertical sectional view thereof.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a perspective view showing a conceptual configuration of a mixed flow / fluctuation wind generation device.

FIG. 5 is a partially enlarged view in the vicinity of the swimming room showing a state where an oblique wind is generated.

FIG. 6 is a perspective view showing a conceptual configuration of another embodiment of the mixed flow / fluctuation wind generation device.

7 (A) to 7 (E) are continuous views showing a swinging state of a blade that creates fluctuating wind.

FIG. 8 is a conceptual diagram showing a conventional example.

[Explanation of symbols]

 1 Swimmer 23 Swimming room (floating space) 25 Air blower 52 Air blower (air blower) 80 Inclined / fluctuation air generator 81 Blade (air flow direction changing member) 82 Pulse motor (air flow direction changing drive means) 85 Blade drive Mechanism (Blower direction change drive means)

Claims (2)

[Claims] 1. A structure in which an ascending air current from a lower part to an upper part of a floating space is formed by air blowing of an air blowing device, and the ascending air current keeps a swimmer in a floating state in the floating space, An air blowing direction changing member provided in an air blowing path near the air blowing port to the floating space, and an air blowing direction changing driving unit that displaces the air blowing direction changing member to change the air blowing changing direction. A free-fall simulation experience device characterized by being configured with a mixed flow / fluctuation wind generation device. 2. The blower direction changing member has a plurality of wing plate members each having a bilaterally symmetrical cross-sectional shape pivotably supported at a substantially center-of-gravity position of the cross-section, in the same plane orthogonal to the blower path. 2. The free-fall simulation experience device according to claim 1, wherein the air-blowing-direction changing driving means is arranged in parallel with the wing plate member, and is configured to swing and drive the blade member.