JPH06296764A - Vertical wind tunnel for leisure - Google Patents
Vertical wind tunnel for leisureInfo
- Publication number
- JPH06296764A JPH06296764A JP5113865A JP11386593A JPH06296764A JP H06296764 A JPH06296764 A JP H06296764A JP 5113865 A JP5113865 A JP 5113865A JP 11386593 A JP11386593 A JP 11386593A JP H06296764 A JPH06296764 A JP H06296764A
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- wind tunnel
- leisure
- vertical
- vertical wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63G—MERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT
- A63G31/00—Amusement arrangements
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63G—MERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT
- A63G31/00—Amusement arrangements
- A63G2031/005—Skydiving
Landscapes
- Ventilation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えばスカイダイビン
グの練習に好適な、人または物体を空気流によって浮揚
させるようにしたレジャー用鉛直風洞に関し、特に鉛直
空気流路を流れる空気流に速度勾配をもたせて、浮揚中
の姿勢変化によって等価抵抗面積に増減が生じたとき、
これに伴って揚力と浮揚者の重量との釣合いが影響され
るのを抑制できるようにした、レジャー用鉛直風洞に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leisure vertical wind tunnel suitable for, for example, practicing skydiving, in which a person or an object is levitated by an air flow, and more particularly to a velocity gradient in the air flow flowing in a vertical air flow path. And when the equivalent resistance area increases or decreases due to a change in posture during levitating,
The present invention relates to a vertical wind tunnel for leisure, which can suppress the influence of the balance between the lift and the weight of a levitator.
【０００２】[0002]
【従来の技術】人または物体を空気流によって浮揚させ
ることを目的とし、下方から上方に向かって鉛直状に空
気流を流通させる部分を有するレジャー用鉛直風洞とし
て、図８に示すようなものが知られており、鉛直状に空
気流を流す部分１が鉛直状に設置された円筒体で形成さ
れるとともに、下部に取付けられたファン（またはコン
プレッサ）２により空気流を円筒体の下方から上方に向
かって送風し、その空気流によって円筒体の内部で人や
物体を浮揚できるようになっている。なお図８中の符号
３はファン駆動源（モータ）を、また符号４は整流板を
それぞれ示している。2. Description of the Related Art A leisure vertical wind tunnel having a portion for vertically flowing an air flow from below to above for the purpose of levitating a person or an object by an air flow is shown in FIG. It is known that a vertically-directed air flow portion 1 is formed by a vertically installed cylindrical body, and a fan (or compressor) 2 attached to the lower part allows the air flow to flow from below the cylindrical body to above. The airflow allows the person or object to levitate inside the cylinder. Note that reference numeral 3 in FIG. 8 indicates a fan drive source (motor), and reference numeral 4 indicates a rectifying plate.
【０００３】[0003]
【発明が解決しようとする課題】ところで、従来のレジ
ャー用鉛直風洞では、上述のとおり鉛直状に空気流を流
す部分が、断面積が一様な円筒体で形成されている。こ
こで、鉛直風洞内における揚力について考察してみる
と、揚力Ｌは［数１］で表される。By the way, in the conventional vertical wind tunnel for leisure use, as described above, the vertical airflow portion is formed of a cylindrical body having a uniform cross-sectional area. Here, considering the lift force in the vertical wind tunnel, the lift force L is represented by [Equation 1].
【数１】Ｌ＝１/２ ρＶ2ＳＣD （ρ：空気の密度，Ｖ：空気の流速，Ｓ：受圧面積，Ｃ
D：揚力係数） 今、浮揚している人が姿勢を変更した場合を想定してみ
ると、姿勢の変更によってＳ・ＣD（等価抵抗面積）が
増加すれば揚力Ｌが増加し人の重量Ｗを上まわり、人は
流れに運ばれて上方に移動する。逆に、姿勢の変更に伴
って等価抵抗面積Ｓ・ＣDが減少すれば、揚力Ｌで重量
Ｗを支えきれなくなって、人は下方に移動する。## EQU1 ## L = 1/2 ρV 2 SC D (ρ: air density, V: air velocity, S: pressure receiving area, C
D : Lift coefficient) Assuming now that the person who is levitating changes his posture, if S · C D (equivalent resistance area) increases due to the posture change, the lift L increases and the weight of the person Above W, people are carried by the stream and move upwards. On the contrary, if the equivalent resistance area S · C D decreases as the posture changes, the lift force L cannot support the weight W, and the person moves downward.
【０００４】このように、従来の鉛直風洞では、浮揚中
に人が姿勢や体勢を変更すると揚力との釣合いが崩れ、
再度安定して浮揚するには元の釣合い時の姿勢に戻る
か、あるいは送風の力を微妙に調整することが必要とな
るという問題点がある。本発明は、従来のレジャー用鉛
直風洞のこのような問題点の解決をはかろうとするもの
で、鉛直風洞における鉛直状に空気が流れる部分の空気
流速を、下方で大きく上方で小さくするように設定する
ことにより、浮揚中における姿勢の変更によって、浮揚
中の人の重量と空気流による揚力との釣合いが殆ど影響
を受けることがないようにした、レジャー用鉛直風洞を
提供することを目的とする。As described above, in the conventional vertical wind tunnel, if a person changes his posture or posture while levitating, the balance with the lift is lost.
In order to levitate stably again, there is a problem that it is necessary to return to the original posture at the time of balance or to finely adjust the force of the blown air. The present invention is intended to solve such a problem of the conventional vertical wind tunnel for leisure, so that the air flow velocity of the portion in which the air vertically flows in the vertical wind tunnel is set to be large at the bottom and small at the top. By setting, it is intended to provide a vertical wind tunnel for leisure in which the balance between the weight of a person being levitated and the lift due to the air flow is hardly affected by the change in posture during levitating. To do.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
め、本発明のレジャー用鉛直風洞は、ファンあるいはコ
ンプレッサと、同ファンあるいはコンプレッサにより供
給される空気を下方から上方に向かって鉛直状に流通さ
せる鉛直空気流路とをそなえ、同鉛直空気流路が、同鉛
直空気流路における空気流速が下方で大きく上方で小さ
くなるような空気流速勾配部をそなえていることを特徴
としている。In order to achieve the above object, the leisure vertical wind tunnel according to the present invention makes a fan or a compressor and air supplied by the fan or the compressor vertically downward and upward. It is characterized in that it is provided with a vertical air flow passage to be circulated, and the vertical air flow passage is provided with an air flow velocity gradient portion such that the air flow velocity in the vertical air flow passage becomes large downward and becomes small upward.
【０００６】[0006]
【作用】上述の本発明のレジャー用鉛直風洞では、次の
ような作用が行なわれる。すなわち、下から上に向かう
鉛直空気流路での空気流速が下方で大きく、上方で小さ
くなる鉛直風洞の当該部分において、任意の状態で人が
空気流に支持されて浮揚していたとする。今浮揚してい
る人が姿勢を変更したことによって等価抵抗面積が増加
すれば、空気力が重量を上まわり浮揚中の人は空気流れ
に運ばれて上方に移動する。上方に移動すると速度勾配
により流速が低下し、増加した等価抵抗面積でも重量と
釣合うようになる。In the leisure vertical wind tunnel of the present invention described above, the following actions are performed. That is, it is assumed that a person is supported by the air flow and levitates in an arbitrary state in the relevant part of the vertical wind tunnel in which the air flow velocity in the vertical air flow path from the bottom to the top is large in the lower part and is small in the upper part. If the equivalent resistance area increases as the person currently levitating changes his / her posture, the aerodynamic force exceeds the weight and the person levitating is carried by the air flow and moves upward. When moving upward, the flow velocity decreases due to the velocity gradient, and the increased equivalent resistance area balances the weight.
【０００７】逆に姿勢の変更に伴って等価抵抗面積が減
少すれば、空気力が重量を支えきれなくなり、位置は下
がる。しかし下方に移動すると、逆に速度勾配により流
速が増加し、減少した等価抵抗面積でも重量と釣合うよ
うになる。このように、重量と等価抵抗面積との比に個
人差がある場合でも、十分な流量が確保してあれば、鉛
直状の空気流のどこかのところで浮揚釣合せが可能とな
り、したがって浮揚中の姿勢の自由度が大となる。On the contrary, if the equivalent resistance area decreases with the change of posture, the aerodynamic force cannot support the weight, and the position lowers. However, when moving downward, on the contrary, the flow velocity increases due to the velocity gradient, and the reduced equivalent resistance area balances with the weight. In this way, even if there is an individual difference in the ratio of the weight to the equivalent resistance area, if sufficient flow rate is secured, levitation balancing can be performed somewhere in the vertical air flow, and thus, during levitation. The degree of freedom of the posture is great.
【０００８】[0008]
【実施例】以下、図面により本発明の実施例としてのレ
ジャー用鉛直風洞について説明すると、図１〜５は第１
〜５実施例を示す模式側断面図、図６，７は第５実施例
の変形例を一部を切断して示す斜視図である。なお、図
１〜７中図８と同じ符号はほぼ同一の部材を示してい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS A leisure vertical wind tunnel as an embodiment of the present invention will be described below with reference to the drawings.
5 to 5 are schematic side cross-sectional views, and FIGS. 6 and 7 are perspective views partially showing a modified example of the fifth embodiment. 1 to 7, the same reference numerals as those in FIG. 8 indicate almost the same members.
【０００９】図１により第１実施例を説明する。この第
１実施例のレジャー用鉛直風洞もスカイダイビングの練
習用あるいは遊興用施設として用いられるもので、鉛直
状に空気が流れる空気流路（以下「鉛直空気流路」と略
称することもある）１と還流部５とが排出ダクト６およ
び吸込み７で無端状に連結されて、還流式風洞を構成し
ている。そして、吸込みダクト７にファン２が配設され
ている。ここで、この第１実施例のものでは、鉛直空気
流路１の大部分が、空気流路断面積が下方で小さく上方
に行くにしたがって大きくなるような、上広がり状のテ
ーパ部８に形成されて、空気流速勾配部を構成してい
る。A first embodiment will be described with reference to FIG. The vertical wind tunnel for leisure according to the first embodiment is also used as a facility for practicing or for recreation of skydiving, and an air flow path in which air flows vertically (hereinafter may be abbreviated as "vertical air flow path"). 1 and the recirculation unit 5 are connected endlessly by a discharge duct 6 and a suction unit 7 to form a recirculation type wind tunnel. The fan 2 is arranged in the suction duct 7. Here, in the first embodiment, most of the vertical air passage 1 is formed in the upwardly wide tapered portion 8 in which the cross-sectional area of the air passage is small in the lower part and increases in the upper part. Thus, the air flow velocity gradient portion is configured.
【００１０】上述の構成により、この第１実施例のレジ
ャー用鉛直風洞では、鉛直空気流路１の大部分におい
て、上方ほど空気流の流速が小さくなる空気流速勾配部
が形成されるため、上述の［作用］の項で述べたとおり
の作用が奏されて、安定した浮揚作用を得ることができ
る。なお空気流路断面積の変化率は、釣合い位置への復
元（静安定）に応じて設定される。With the above structure, in the leisure vertical wind tunnel of the first embodiment, the air flow velocity gradient portion where the flow velocity of the air flow becomes smaller in the upper part is formed in most of the vertical air flow passage 1, and therefore The operation as described in the section [Operation] is performed, and a stable levitating operation can be obtained. The rate of change of the air flow passage cross-sectional area is set according to the restoration to the balanced position (static stability).
【００１１】次に、図２により第２実施例を説明する。
この第２実施例のレジャー用鉛直風洞は、開放式風洞で
ある点で第１実施例のものと相違するだけで、鉛直部の
大部分が第１実施例のものと同様に上広がり状のテーパ
部８に形成されて空気流速勾配部を構成しており、また
作用効果の点においても第１実施例の場合と異なるとこ
ろはない。さらに、図３に示した第３実施例のレジャー
用鉛直風洞は、ファン２が排出ダクトに設置された吸引
式である点で第１実施例のものと相違するだけで、主要
部の構成ならびにその構成に伴う作用効果の点において
異なるところはない。Next, a second embodiment will be described with reference to FIG.
The leisure vertical wind tunnel of the second embodiment is different from that of the first embodiment only in that it is an open-type wind tunnel, and most of the vertical portion has an upward spread shape like that of the first embodiment. It is formed on the taper portion 8 to form an air flow velocity gradient portion, and there is no difference in the action and effect from the case of the first embodiment. Furthermore, the leisure vertical wind tunnel of the third embodiment shown in FIG. 3 is different from that of the first embodiment only in that the fan 2 is of a suction type installed in an exhaust duct, and the configuration of the main part and There is no difference in the action and effect associated with the configuration.
【００１２】また図４に示した第４実施例のレジャー用
鉛直風洞は、第２実施例のレジャー用鉛直風洞におい
て、鉛直部１に絞り部９が形成されるとともに、絞り部
９より上部が上広がり状のテーパ部８に形成される構成
となっている点で第２実施例のものと相違するが、作用
効果の点において第２実施例のものと異なるところはな
い。さらにまた、図５に示した第５実施例のレジャー用
鉛直風洞は、鉛直部１が円筒体で構成されるとともに周
壁部に長手方向に沿って複数の小孔10が列状に形成され
ている。The leisure vertical wind tunnel of the fourth embodiment shown in FIG. 4 is the same as the leisure vertical wind tunnel of the second embodiment, except that the narrowed portion 9 is formed in the vertical portion 1 and the portion above the narrowed portion 9 is formed. It differs from that of the second embodiment in that it is formed in a taper portion 8 having an upward spread shape, but there is no difference from the second embodiment in terms of the operational effect. Further, in the leisure vertical wind tunnel of the fifth embodiment shown in FIG. 5, the vertical portion 1 is composed of a cylindrical body, and a plurality of small holes 10 are formed in a row along the longitudinal direction on the peripheral wall portion. There is.
【００１３】上述の構成により、この第５実施例のもの
では、下から上に向かう空気の一部が空気流の流れ方向
に沿って形成された複数の小孔10から順次洩出して鉛直
部１を流れる空気量が上方に行くにつれて次第に少なく
なる。したがって、この構成によりこの第５実施例のレ
ジャー用鉛直風洞においても、上述の各実施例の場合と
同様の空気流速勾配を得ることができる。図６に示した
変形例では、鉛直部１の全周面に均等に小孔10が形成さ
れており、また図７に示した変形例では、小孔10に代え
て複数のスリット11が鉛直部１の長手方向に沿って形成
されている。なお、図６，７に示した変形例のものでも
図５に示したレジャー用鉛直風洞とほぼ同様の作用効果
が奏されることは言うまでもない。With the above-mentioned structure, in the fifth embodiment, a part of the air flowing from the bottom to the top is sequentially leaked out from the plurality of small holes 10 formed along the flow direction of the air flow, and the vertical portion. The amount of air flowing through 1 gradually decreases as it goes upward. Therefore, with this configuration, also in the leisure vertical wind tunnel of the fifth embodiment, it is possible to obtain the same air flow velocity gradient as in the above-described respective embodiments. In the modification shown in FIG. 6, the small holes 10 are formed evenly on the entire peripheral surface of the vertical portion 1, and in the modification shown in FIG. 7, instead of the small holes 10, a plurality of slits 11 are formed vertically. It is formed along the longitudinal direction of the portion 1. It is needless to say that the modified example shown in FIGS. 6 and 7 has substantially the same operational effect as the leisure vertical wind tunnel shown in FIG.
【００１４】[0014]
【発明の効果】以上詳述したように、本発明のレジャー
用鉛直風洞によれば、レジャー用鉛直風洞において、空
気が下方から上方に向かって鉛直状に流れる鉛直空気流
路に、下方の空気流速が上方の空気流速より大きくなる
ような空気流速勾配部を形成することより、浮揚中にお
ける姿勢の変化によって、浮揚中の人の重量と空気流に
よる揚力との釣合いが影響されるのを抑制できる、とい
う利点が得られる。As described above in detail, according to the vertical wind tunnel for leisure of the present invention, in the vertical wind tunnel for leisure, the air below the air flow vertically in the vertical air flow path from the lower side to the upper side. By forming an air flow velocity gradient part where the flow velocity is higher than the upward air flow velocity, it is possible to prevent the balance between the weight of the person being levitated and the lift due to the air flow from being affected by changes in posture during levitating. The advantage is that you can.
【図１】本発明の第１実施例としてのレジャー用鉛直風
洞を示す模式図。FIG. 1 is a schematic view showing a vertical wind tunnel for leisure as a first embodiment of the present invention.
【図２】同第２実施例としてのレジャー用鉛直風洞を示
す模式図。FIG. 2 is a schematic view showing a vertical wind tunnel for leisure as a second embodiment.
【図３】同第３実施例としてのレジャー用鉛直風洞の要
部を示す模式図。FIG. 3 is a schematic diagram showing a main part of a leisure vertical wind tunnel as a third embodiment.
【図４】同第４実施例としてのレジャー用鉛直風洞を示
す模式図。FIG. 4 is a schematic diagram showing a leisure vertical wind tunnel as a fourth embodiment.
【図５】同第５実施例としてのレジャー用鉛直風洞の要
部を示す模式図。FIG. 5 is a schematic view showing a main part of a leisure vertical wind tunnel as a fifth embodiment.
【図６】第５実施例としてのレジャー用鉛直風洞の変形
例の要部を示す模式斜視図。FIG. 6 is a schematic perspective view showing a main part of a modified example of a leisure vertical wind tunnel as a fifth embodiment.
【図７】第５実施例としてのレジャー用鉛直風洞の変形
例の他の要部を示す模式斜視図。FIG. 7 is a schematic perspective view showing another main part of a modified example of the leisure vertical wind tunnel as the fifth embodiment.
【図８】従来のレジャー用鉛直風洞の要部を示す模式
図。FIG. 8 is a schematic view showing a main part of a conventional leisure vertical wind tunnel.
１ 鉛直空気流路 ２ ファン ３ ファン駆動源 ４ 整流板 ８ 空気流速勾配部としてのテーパ部 1 vertical air flow path 2 fan 3 fan drive source 4 straightening plate 8 taper part as an air velocity gradient part
Claims (1)
るいはコンプレッサと、同ファンあるいはコンプレッサ
により供給される空気を下方から上方に向かって鉛直状
に流通させる鉛直空気流路とをそなえ、同鉛直空気流路
が、同鉛直空気流路における空気流速が下方で大きく上
方で小さくなるような空気流速勾配部をそなえているこ
とを特徴とする、レジャー用鉛直風洞。1. A leisure vertical wind tunnel comprising a fan or a compressor and a vertical air flow passage for vertically circulating air supplied by the fan or the compressor from a lower side to an upper side. However, the vertical wind tunnel for leisure is characterized by having an air flow velocity gradient portion such that the air flow velocity in the vertical air flow passage is large in the lower part and small in the upper part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5113865A JPH06296764A (en) | 1993-04-16 | 1993-04-16 | Vertical wind tunnel for leisure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5113865A JPH06296764A (en) | 1993-04-16 | 1993-04-16 | Vertical wind tunnel for leisure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06296764A true JPH06296764A (en) | 1994-10-25 |
Family
ID=14623040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5113865A Withdrawn JPH06296764A (en) | 1993-04-16 | 1993-04-16 | Vertical wind tunnel for leisure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06296764A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013121536A (en) * | 2004-07-30 | 2013-06-20 | Skyventure Llc | Recirculating vertical wind tunnel skydiving simulator and drag cable for use in wind tunnel and other location |
| CN108970128A (en) * | 2018-08-29 | 2018-12-11 | 杨雪锋 | A kind of wind-tunnel amusement air supply device |
| CN111729327A (en) * | 2020-06-09 | 2020-10-02 | 西安翔辉机电科技有限责任公司 | Experience type wind tunnel |
| US11707689B2 (en) | 2018-11-16 | 2023-07-25 | Ifly Holdings, Llc | Recirculating vertical wind tunnel |
-
1993
- 1993-04-16 JP JP5113865A patent/JPH06296764A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013121536A (en) * | 2004-07-30 | 2013-06-20 | Skyventure Llc | Recirculating vertical wind tunnel skydiving simulator and drag cable for use in wind tunnel and other location |
| CN104085533A (en) * | 2004-07-30 | 2014-10-08 | 斯凯旺蒂尔有限责任公司 | Recirculating vertical wind tunnel skydiving simulator and reduced drag cable for use in wind tunnels and other locations |
| CN108970128A (en) * | 2018-08-29 | 2018-12-11 | 杨雪锋 | A kind of wind-tunnel amusement air supply device |
| US11707689B2 (en) | 2018-11-16 | 2023-07-25 | Ifly Holdings, Llc | Recirculating vertical wind tunnel |
| CN111729327A (en) * | 2020-06-09 | 2020-10-02 | 西安翔辉机电科技有限责任公司 | Experience type wind tunnel |
| CN111729327B (en) * | 2020-06-09 | 2021-10-15 | 西安翔辉机电科技有限责任公司 | Experience type wind tunnel |
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| A300 | Withdrawal of application because of no request for examination |
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