KR20070023231A - The apparatus for training experience of skydiving - Google Patents

Abstract

The present invention allows the sky diving experience on the ground to relieve stress and satisfy the needs of 21C science, sports, and modern people. The lower part of the vertical wind tunnel into which the experienced person can enter is in the form of a vial or venturi tube. When it falls, the acceleration is absorbed by the drag caused by the fast air flow generated in the venturi tube area at the bottom, and it is possible to float again and experience the air floating.It is a specific method to secure the efficiency and safety of operation. The pressure is higher than atmospheric pressure, the upper and lower part of the experience section is wide, the middle part has the shape of a venturi tube, and a closed flow path is implemented to block the noise.

Skydiving, wind tunnel, vertical wind tunnel, drop experience, levitation, venturi building,

Description

The apparatus for training experience of skydiving}

  1 is a front perspective view according to a preferred embodiment

  2 is a plan perspective view according to a preferred embodiment

  3 is an airflow distribution diagram according to a preferred embodiment

  4 is another example of a preferred embodiment

  5 is an example of clothes worn by an experienced person

  6 is a plan view of the air conditioner

1. There are two types of vertical wind tunnels for a known form of skydiving experience.

2. The first type is an open air column centering the skydiver relative to the fan outlet. This is the same principle as putting a ping pong ball into the funnel and blowing it into your mouth to levitate it. If the skydiver is manipulated to move out of the air column, the skydiver can fall to the ground at a violent rate, creating a rubber mat Or it can be a parallel network.

3. The second type of vertical wind tunnel is to completely surround the cylinder with a net bottom for supporting the skydiver. The cylindrical chamber surrounds the skydiver so that it does not fall out of the chamber. In this type, a blower (fan) is mainly installed at the lower end or the upper end of the experience section to eject air from the lower fan to the upper part, or to suck air into the upper fan to discharge the upper part. .

4. For the two types of levitation devices currently commercialized, the airflow velocity varies from approximately 75 mph (120 km / h) to 125 mph (200 km / h), depending on the choice of equipment structure and experience clothing. However, this type requires an engine for a blower (fan) or a powerful motor to generate a rapid air flow, and the strong noise is diffused to the outside through the open air outlet.

It is also an air flotation that starts from the bottom net of the device rather than the skydiving experience of the skydiving, which is an important experience in posture control, etc., but it is a drop in the air as in the subject of the present invention. Is limited.

5. Other high fall experiences using machinery include roller coasters as amusement rides. An example of a commercialized facility is a device in Ohio, USA, with a height of 128 meters and a drop speed of 193 km / h, which are fixed to the transport machinery and unable to move.

According to the present invention, the drop acceleration when the experienced person falls directly from the bottom through the vertical wind tunnel mainly carried out by the ground for the drop experience is applied to the rapid flow rate and air pressure (density) in the venturi tube structure. To a method for absorbing by drag.

At the same time, the present invention provides an optimal drop experience in a state of wearing clothes or supportive vests and backpacks to increase buoyancy in consideration of the height and weight of the experienced person so that the experienced person can have a safer and more realistic experience. This involves a combination of techniques to make it work.

1. The present invention takes the form of a vial or venturi tube (in the present invention, referred to as a conical chamber) in the vertical wind tunnel in which the air flows downward from the upper portion to form a faster flow rate at the waist of the conical chamber. In this case, the experienced person has a structure in which the acceleration at the time of fall is stopped by the drag due to the air resistance of the high velocity, and is floated back to the air.

2. The present invention forms an internal pressure higher than atmospheric pressure so that the effect of air reaction force is greater, and at the same time forms a closed air flow circuit to prevent strong noise from flowing out.

3. When described in detail by the accompanying drawings as follows.

Examples of the present invention are not limited to specific embodiments as shown in the accompanying drawings, and various other modifications can be made using existing known wind tunnel structures and hydrodynamic principles, and fall and land according to the experience clothes and equipment. You can also apply the method differently.

4. Structure

The cone-shaped chamber 2, which is a support space in the drop experience apparatus 1 capable of experiencing skydiving drop in FIG. 1, has a diameter of the upper portion and a diameter thereof decreases as it goes down to the lower portion. (22) and having a lower end (23) and having a base chamber (3) for supplying air at the lower part of the conical chamber (2) and a roof chamber (4) for discharging air at the upper part of the conical chamber (2). The outer part of these chambers is composed of an air blower 5 for supplying a large amount of air with air pressure and an air circulation tunnel 10 for air circulation.

It also has two or more entrances (8a, 8b) that can be dropped and an exit (9) that can come out after falling, these entrances are shielded doors in the form of a revolving door or the like (where air pressure does not flow out) 25). As another apparatus, an air outlet 11 for lowering the internal pressure of the base chamber 3 so as to have an optimal descending speed after the experience, and an air inlet 51 for adding internal pressure to the drop experience apparatus 1. There is.

The cone-shaped chamber 2 of the drop experience device 1 is a place where the force of the experienced person 20 to fall and the force of air to support the balance space 22 is the clothes of the experienced person (e.g., a Ferratu with a large drop resistance). The height and position are different depending on the Lubbs outfit, the bulky vest or backpack, etc. and the posture during the experience (for example, lying down with open arms). Can control in height space.

5. Air conditioning pipeline

The lower end 23 of the conical chamber 2 is manufactured as an air-adjustable conduit 24 that is thinner in the form of a bottle and expands when air is injected into the air inlet 25 to reduce the diameter of the lower end 23. do.

The air-regulated pipeline 24 is an air passage having a flow rate that allows the experienced person to sufficiently absorb the drop speed due to the acceleration of gravity during the air fall. In Bernoulli's law, the flow velocity of the fluid is inversely proportional to the square of the cross-sectional area. The speed of the air passing through is much faster than the speed of the support space (22).

Therefore, even if the dropper deliberately descends vertically (for example, diving underwater), the drop rate is slowly lowered due to the resistance of the upward air velocity. Therefore, the moment it comes in contact with the net 26 will be securely seated without excessive impact on the body.

Another function of the air conditioning pipe 24 is to make the descent easier when the descent after the end of the experience.

At this time, the internal air pressure of the lower portion 23 is increased and contracted, and the contraction is converted to a more soft cushion form, with the elasticity weakened by expansion of the inner air pressure, and the relative flow rate is reduced, and the experienced person descends the conical chamber (2). It will alleviate the impact of hitting the wall.

 In the present invention, the air-conditioned pipe line 24 is selected as a fixed type rather than a fixed type, and the drop experience device 1 is larger than a conventional known experience device, and a large amount of air is injected to directly experience a drop. Considering that the performance or capacity of the air blower (5) is not designed or modified in advance, the design and experiment of the conical chamber (2) and other accessories can be performed. It is also the background of consideration to be able to apply and to set economic optimum conditions.

The shape of the balloon structure that can adjust the diameter of the air control pipe 24 is manufactured as a woven fabric coated with a smooth material and a soft and tough resin series, and the reverse conical structure of the long air bag of about 16 to 24 pieces. As it is arranged in a superimposed form in one direction to be adjusted like the aperture form of the camera, the inner diameter increases or decreases as air is injected into the inside. It is attached to the inner wall of the conical chamber (2) and the base chamber (3) has a double overlapping structure and injects air into the air inlet (25) to expand in the form of a balloon structure to adjust the inner balloon diameter do.

 6 is an illustration of the expanded air bag 24a and the retracted air bag 24b of the air conditioning tube. For expansion and contraction, there is a ring support 31 which is flowed in a twisted state at the lower part, so that the air pockets expanded during contraction become a twisted state due to the rotation of the ring support 31. The air bag is in close contact with the lower end wall 23a of the chamber because it is moved to 32b, and does not interfere with the air conditioning tube 24 performance.

The conical chamber 2, the base chamber 3, and the access passages (paths connected to 8a, 8b and 9) of the experience apparatus 1 can be made of glass or transparent acrylic resin material that can be observed from the outside. It is possible to mutually confirm the outside, and experience the tension and experience as if a ship passes through the preparation room (83 in FIG. 4), the shield door 80 and the passage where the experienced person wears the experience clothes and maintains the pressure gradually. It also contributes to.

6. Setting of air pressure

In the present invention, the internal pressure of the experience apparatus 1 is designed to be slightly higher than the atmospheric pressure (approximately 1.01 to 1.20 atm), and more specifically, the lower end 23 and the support space 22 of the conical chamber 2 are atmospheric pressure. It has a positive pressure (about 1.01 ~ 1.20 atm).

This means that the floating capacity is proportionally larger at the same flow rate as compared with atmospheric pressure, so that the air blower 5 preferably has a blower shape. In general, it has a higher pressure (static pressure) than a fan-type blower, and even in the state where the conical chamber (2) is determined, it can easily cope with fine adjustments such as adjusting the air volume according to the number of people and physique and adjusting the diameter of the air-controlled pipe. It becomes possible.

However, the high-capacity high-capacity air blower also consumes a lot of power. If it is manufactured as an open type, the size and noise of the equipment are increased at the same time.

Accordingly, in the present invention, in order to increase the internal pressure according to the performance of the air blower 5, the drop experience device 1 is composed of a closed loop through which air is circulated and an air pressure blower that separately increases the internal pressure (52 in Fig. 4). The cross section area of the lower end 23 and the air control pipe 24 which are the acceleration capacity and the reaction force space according to the installation capacity of the air blower 5, the size of the support space 22, and the drop height in the design stage. It can be set through design and test in consideration of acceleration absorption capacity according to

Air circulation tunnel 10 having a closed loop is generally a large loss due to air resistance. Therefore, the air circulation tunnel of the present invention is associated with a huge building structure, but typically

A structure having at least 3 to 4 times the cross-sectional area of the support space 22 is required, and the curved portion in which the air flow is changed is solved by reflecting the design to guide the flow.

The air supplied from the air blower 5 is raised at a speed of about 130 to 150 mph (208 to 240 Km / hr) at the conical tunnel lower end 23. This speed is usually the level that can support the human body when the experienced person wears a drop suit and a shock-proof helmet and a support vest (about 75 to 125 mph, which refers to two types of wind tunnel devices that are commercially available). Can be sufficiently buoyed and also controlled by a drop suit (20a of FIG. 5) and an anti-shock helmet (20b of FIG. 5) and a vest (20c of FIG. 5) worn by the experienced person, It can be properly adjusted according to the degree and drop position and method. Floating vests can also be equipped with a parachute-like backpack (20d in FIG. 5) to provide an increase in buoyancy.

The base chamber 3 is provided with an air distributor and a rectifier.

The air supplied from the air blower 5 is diffused widely through the distributor 7 to the bottom of the base chamber 3 and is passed through the vane which is supplied and diverted to draw air up at the same time, and evenly The rectifier 6 distributes air. The rectifier 6 is designed such that an even flow rate is distributed over the entire area into the conical chamber 2. In addition, the upper part of the rectifier has a net-type elastic net 26, which is designed to consider the cushion and the safety distance so as to minimize the impact when the experienced person falls without affecting the air flow.

The upper roof chamber 4 has an important function for the air flow in which the experienced person 20 falls and levitates. A large air outlet 41 having a quantity of eight or more in front of the 360 degree is uniformly circumferentially so that the air flow in the cross section of the internal support space 22 of the conical tunnel 2 is formed at a uniform flow velocity in the vertical direction. Place it. In addition, the central portion has an outlet 42 having a minimum diameter of diameter D of the lower end of the conical chamber 23 so that air is discharged directly to the upper end. Each outlet is also equipped with a screen net and can be fine tuned as a damper.

The upper portion of the roof chamber 4 is provided with an excess air outlet 53. It has a function of maintaining a comfortable internal air by discharging the air continuously circulated by a certain amount and at the same time to uniformly adjust the internal pressure of the drop experience device (1).

2 illustrates a cross-sectional view along the line A-A 'of FIG. 1.

The air intermediate outlet 11 and the intermediate discharge valve 12 for lowering the internal pressure of the base chamber 3 so that the experienced person 20 is at the optimum descending speed when descending are considered in consideration of the air flow distribution and the design efficiency at the time of landing. It is arranged and installed in at least two places to enable precise air discharge. In addition, as shown in the embodiment of FIG. 4, intermediate discharge devices 11a and 12a may be installed to be immediately discharged from the conduit of the air blower 60.

3 shows the air flow distribution for each position of the conical chamber.

Landing level 0 (L0) and falling level 4 (L4) and level 5 (L5) have a non-floating flow rate, and air is generated at level 2 (L2) and level 3 (L3), which are floating spaces 22. You can have a support experience. In the level 1 (L1) region, a strong reaction force is generated, which can be repelled even during a fall, and at the same time, a smooth air flow that can descend after the experience can be realized.

There is no possibility of hitting a conical wall during the drop experience. The area closer to the wall is relatively lower in air velocity due to the viscous effect, but because of this, the experienced person does not collide with the wall but rather acts as a reaction force pushed to the inner surface.

The conduit of the conical chamber 2 is preferably a structure in which the air stream is a gradual enlarged conduit so that no vortex is formed. For conventional air, a unilateral angle of less than about 6-8 ° (see 28 in FIG. 3) is preferred and more specific design is related to the distance between the dropping point and the support space 22 and the lower end 23, in particular the Influences on the flow rate and the experience dress can be fully adjusted through computer simulations and safety design and actual verification of the installation.

As mentioned above, the dropping zones 81 and 82, which are skydiving falling platforms, are located at one or two levels, and their positions are determined by computer design and various mechanisms according to the basic shape and hydrodynamic principles of the various devices of the falling experience apparatus 1. It is desirable to position finally through the turn experiment. In this case, the beginner can drop in the lower position L4 and the trained experienced person can do in the upper position L5. When falling from the upper position (L5), the lower drop zone 82 is moved so as not to be disturbed by airflow and fall. As a more specific method of falling, a skydiving experienced person, an instructor, or an educated divers instructor can typically teach preparation training and protective gear selection, wearing and falling tips, levitation guidance, and safe landing techniques. A typical diver's experience will determine the dress, fall position, etc., taking into account the optimal airflow according to the person's build and weight.

4 illustrates a structure in which the fan blower 60 is applied as an example of another experience apparatus. Unlike the blower type blower (5 in Fig. 1), the fan type blower structure generally lowers the static pressure when supplying a large amount of air, and blows low pressure air of about 100 mm Aq level or lower, in this case, the pressurized blower (52). It is preferable to add.

In addition, there is a room 83 in which double shielded doors 80a, 80b, 80c and 80d are installed to prevent air discharge through the shielded door when pressurized air is used, and at the same time, the experienced person can adapt to the pressure step by step. It is desirable to be.

The drop experience device (1) includes a closed closed circuit structure, an air blower, and a large wind tunnel, even though the noise level is lower than that of an open type. It is desirable to have a blocking structure. This can be sufficiently solved by general noise blocking technology or noise blocking material in the design and manufacture of walls.

7. Experience Dress

The drop location can be selected according to the drop experience, the dress, and the posture.

Beginners can fall from the lower place (L4 of FIG. 3), and more experienced people with more complete gear and posture training can drop from the higher place (L5 of FIG. 3).

For example, the drop buoyancy decreases when the drop experienced person falls in the vertical state, and in this case, the buoyancy decreases and the gravity of the buoyancy and the gravity acceleration are lowered to the lower end 23 of the conical tunnel at this time by the air control conduit 24 having the expanded inner diameter. The balance is increased again to stop in the support space (22), if the experienced person to open the arms and fall to receive the maximum buoyancy, the lower portion of the support space (22) while immediately descending at a low speed immediately from the drop (21) Stop at and ascend and swim.

In the present invention, a device for reducing the dropping speed by a rope or a certain distance or a constant force to a certain position by allowing the rope to be fastened to a backpack or a support vest in view of an experienced person who has not been avoided due to the discomfort of wearing an experiential dress or falling posture training. Once this is reached, another drop aid can be applied to allow the rope to be removed.

8. Descent

At the end of the experience, two or more methods can be provided in parallel to ensure a safe landing.

One method is to open the valve 12 in the middle part of the wind tunnel by a certain amount and relatively slow down the flow rate of the air supplied to the lower part 23. The other method is to use the air in the vest or backpack worn by the experienced person directly. It's a way to get rid of it and shrink it. This is to retract the backpack by opening the air inlet (20e of Fig. 5) as if pulling down the parachute of the parachute as if descending after the end of the experience. Unlike the parachute, the backpack injects air into the air and expands the volume to give a boost effect by the air wind. On the contrary, it can be manufactured to reduce the volume by removing the air during the descent and landing after the experience.

As another descending method, the experienced person grabs the buoy (rubber ball, 27 in FIG. 3) of the conical lower end and descends to the base chamber part through the rope. In this case, the rope may be manufactured to be automatically lowered by being connected to the outside 27a by a mechanical device.

 The base chamber portion 3 has a cross-sectional diameter of about 1.5 to 2 times that of the conical tunnel, so that the flow rate is reduced from about 1/2 to about 1/4, so that the buoyancy is weakened and lowered lightly. In addition, the base chamber 3 has a structure of a net 26 having a buffer function at the bottom of the final landing, so that even if it descends by any of the above methods, there is no physical damage caused by a drop impact.

9. Other

The equipment of the present invention may be provided with a wireless transceiver in the outfit or backpack of the experiencer to have a more realistic experience, and may have a microphone device to communicate with the experiencer from the outside.

In addition, for a more comfortable and natural experience, the cooler 29 is provided inside the air rotating tunnel 10 to block heat generated by the rotation of the air, and the driving motor of the blower 5 is exposed to the outside to provide the It is desirable to ensure that only the shaft 54 is mounted so that the heat of the motor and the odor of lubricating oil are blocked.

At the same time, the equipment of the present invention may be attached to the conical chamber (2), the device for measuring the air pressure, flow rate, etc. for each part, so that the experienced person can directly contribute to the scientific experience while directly seeing.

 Looking at the main specifications of the embodiment of the drop-experience device (1) mentioned above is shown in Table 1 below. However, as mentioned in the spirit of the present invention, it is preferable to realize more safely for the fall experience. The specification of the equipment can be sufficiently changed or applied to other conditions than the present embodiment or the following specification.

Classification and quantity Item Desirable range More desirable range Body structure Lower part 23 diameter 2.5 ~ 3.5m 2.5 ~ 3m Floating space (22) diameter 3.5 ~ 5m 4 ~ 4.5m Drop ~ float space Float ~ float distance 2.5 ~ 6m 3-5m and around 5m Full height About 20-30m Around 25m Blower type (2 ~ 4) Pressure in chamber (Bar) 1.01-1.2 1.1 to 1.2 Blower air volume 10,000m3 / min, 100mmAq each Fan method (6 ~ 10 units) Pressure in chamber (Bar) 1.01-1.1 1.05 or later Fan air volume 5,000 m3 / min each, 50 mmAq Pressurized blower (1 unit) Air volume and static pressure 2,000m3 / min, 500 ~ 2,000mmAq

Although the present invention is different in terms of low atmospheric pressure of high altitude such as actual skydiving or general conditions or protective equipment of the dropping process, unlike the conventional simple levitation experience, tension and anxiety when the skydiver jumps for the fall from the air It can have enough functions to experience realistic training about overcoming training, jumping posture for falling, and levitation posture and landing posture.

Claims (9)

 In the drop experience device for the sky diving drop experience, there is a conical chamber in the form of a vial or venturi tube, and a relatively wide chamber at the upper end and the lower end thereof. And a blower and an air circulation tunnel for supplying air so that the experienced person can become levitation by dragging by strong and fast air flow at the bottom of the conical chamber when the experienced person falls. The drop experience apparatus according to claim 1, wherein the inside of the conical chamber of the drop experience apparatus is provided with a pressurized blower to add a positive pressure. The drop experience device according to claim 1 or 2, wherein the drop experience device has a closed loop circuit to maintain a positive pressure inside the drop experience device. According to claim 1 and 2, the drop experience device having a balloon-shaped wall in the lower end of the conical chamber is provided with an air-conditioning pipeline to adjust the inner diameter by the air pressure therein to control the rapid air flow The dropping experience apparatus according to claim 1 or 2, wherein both ends of the conical chamber have a rectifier designed to uniformly draw the air flow rate and an air outlet of the upper end to form a uniform air flow distribution of the buoyant space. The drop experience apparatus according to claim 1 and 4, further comprising an air outlet and an intermediate discharge valve for descending after the drop experience. The method according to claim 1 and 6, in the clothing worn by the experienced person for the drop experience, the levitation vest or backpack is used as a tool for landing, and when air is removed directly from the vest or backpack worn by the experienced person, it contracts to reduce buoyancy. Drop experience device that allows the simultaneous application of the method of implementing a safe landing. The drop experience apparatus according to claim 1, 6 and 7, which descends and lands through a rubber ball buoy (buoy) floating from the bottom of the conical chamber for the drop experience. According to claim 1, the conical chamber, the base chamber and the access passage is a drop experience device having a transparent material structure to observe the drop experience, levitation experience and landing stage from the outside

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