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WO2017129223A1 - Free fall simulator - Google Patents

Free fall simulator

Info

Publication number
WO2017129223A1
WO2017129223A1 PCT/EP2016/051450 EP2016051450W WO2017129223A1 WO 2017129223 A1 WO2017129223 A1 WO 2017129223A1 EP 2016051450 W EP2016051450 W EP 2016051450W WO 2017129223 A1 WO2017129223 A1 WO 2017129223A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
air
opening
chamber
preferably
lower
Prior art date
Application number
PCT/EP2016/051450
Other languages
German (de)
French (fr)
Inventor
Boris Nebe
Manuel Dohr
Original Assignee
Indoor Skydiving Germany Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D23/00Training of parachutists
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63GMERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT
    • A63G31/00Amusement arrangements
    • A63G2031/002Free-fall

Abstract

The invention relates to a free fall simulator comprising a closed air circuit, an air duct (10) that includes a flight chamber (11) in which persons can remain suspended in the air as a result of an upward vertical air flow, a lower opening at a lower end, an upper opening at an upper end, and at least one fan (12) for generating the air flow, the free fall simulator further comprising an antechamber (26) with a floor (32) via which the flight chamber (11) can be accessed, the floor (32) of the antechamber (26) being provided with an opening (31) for noise reduction purposes.

Description

FREE FALL SIMULATOR

description

The invention relates to a free fall simulator, closed in itself

Air circuit.

In a free fall simulator is a device which is adapted to a person in a a vertically ascending air current flowing through

Hover chamber passes to keep in a floating position. Often have such freefall simulators to a closed air duct. The air current is via the air guide duct after its exit from an upper opening of the suspension chamber to a lower opening of the

Hover chamber returned, so that a closed circuit is formed.

Furthermore, it is known that such freefall simulators comprise a so-called pre-chamber ( "antechamber") through which can be "entered", the actual floating chamber. It is desirable is that a connection between antechamber and hover chamber remains open during operation of the free fall simulator, so that users of the free fall simulator continuously

can enter hover chamber and abandoned. However, this results in a considerable noise pollution, which is bothersome in particular a "thumping" in the pre-chamber. To solve this problem 2011/084114 A2 proposes, for example, in WO, a so-called

form "vibration chamber", which has a closed inner volume and at least one sound absorber. This solution according to the prior art, however, felt consuming than constructively.

It is therefore an object of the present invention to provide a free-fall simulator, wherein a noise reduction by simple means and to still be realized effectively. This object is achieved by a free-fall simulator according to Claim. 1 According to a first aspect, the object is in particular by an

Free-fall simulator (preferably having in itself closed air circulation) were dissolved, wherein the free-fall simulator includes an air duct with a floating chamber, able to float in the persons due to a vertically upward directed air stream, having a lower opening at a lower end and an upper opening at an upper end and at least one blower for generating the air flow. In particular, the Freifal lsimulator a

Pre-chamber having a bottom, via which the float chamber can be entered, wherein the bottom of the pre-chamber having a bottom opening (to reduce noise).

A core concept of the first aspect of the invention is to provide an opening in a bottom portion of the pre-chamber, so that the occurring sound can be reduced in a simple manner. Here, a under the

Prechamber space befindlicher effective to increase the volume of the total space comprising the space of the pre-chamber and the space under the

Antechamber, be used. Advantageously, this additional space dampens particular as a resonance chamber, the pressure fluctuations in the antechamber. Preferably, insulation material may be introduced into the space under the prechamber. Alternatively or additionally, may be provided (as a partition between pre-chamber and the space under the prechamber) a perforated plate (installed) can be, so that pressure waves separated ( "crushed") to be. Overall, it can in a simple manner, a noise reduction or the damping of

Pressure fluctuations in the antechamber be achieved. An opening degree of the bottom opening is preferably controllable, in particular adjustable (preferably in at least three stages).

According to a second aspect of the invention, the object is in particular achieved by a free fall simulator (in particular of the type described above) with in itself closed air circulation, can levitate an air duct with a float chamber in which people due to a vertically upward directed air stream comprising bottom with an opening at a lower end and an upper opening at an upper end and one or more fans for generating an air flow, wherein an upper air ducting in cross-section preferably at least partially (substantially) is round, in particular circular, and wherein a contraction ratio is preferably in a range of 2.0 to 3.5 is located. The contraction ratio is the ratio of cross-sectional area of ​​an input nozzle inlet to the entrance of the nozzle outlet. A maximum total power of all provided for blower (12) or of the exactly one fan (12) may be less than 600 kW, preferably less than 500 kW. A central idea of ​​the second aspect is the fact that

as it were a completely new concept for a free-fall simulator is proposed. The freefall simulators in the prior art are known to be formed so that in this freefall simulators either (mainly to

Entertainment purposes) can float a person in prone or supine position, or (more likely for sporting purposes or for training purposes) a person (as in real free fall) a fluidic "small" position

may occupy, must be present in much higher speeds for the vertical air current (in a sitting position, for example upside down or). In contrast, in the present invention are a new class of

proposed freefall simulators which is deliberately configured so (for example by the structure of the air guide, in particular the balance chamber and / or the configuration of a blower) that particularly high air speeds that would also allow a freefall simulation in a "head-on" position (for example, are not possible). It is therefore deliberately avoided the possibility of also demanding athletic freefall simulations or

to allow free fall simulations for training purposes (for example, for skydivers). The individual features cooperate such that a total of a small-sized, compact yet at least for the

Entertainment area sufficient construction can be realized.

For example, a small contraction ratio may lead indeed to increased turbulence. However, this is consciously in view of the aforementioned advantages in buying. A not to be underestimated effect is the reduction of noise pollution, the correspondingly higher fails at high flow rates of air flow. Total is achieved in addition to the compact design also by simple means a reduction in noise pollution.

In a specific embodiment, the floating chamber is preceded by an entry die. The inlet nozzle is preferably of a housing section (for example a concrete wall) surrounded, so that a gap is formed between an outer wall of the inlet nozzle and the surrounding housing portion. The above-mentioned bottom opening in the antechamber preferably connects the pre-chamber and this gap. A volume of the gap is more preferably at least 1.5 times, even more preferably at least 2 times, even more preferably at least 5 times as large as a volume of the pre-chamber. As a result, this (anyway

usually provided) space can be effectively used as a resonance chamber to equalize pressure fluctuations in the prechamber. So by simple design means a reduction of noise exposure is achieved.

The inlet nozzle may also (especially in a neck portion of the

Inlet nozzle) at least one nozzle opening (preferably formed by a perforated plate) have. The nozzle opening is preferably connected to the intermediate space. This results in a volume flow into the space and, optionally, through the bottom hole in the pre-chamber (since the pressure in the nozzle, particularly in the neck portion of the nozzle is higher than in the pre-chamber). This mass flow reduces occurring cavity resonances (in addition to the effect by the increase in volume by the

Gap).

The intermediate space (apart from said openings) of walls, such as concrete walls, in particular completely, enclosed, and preferably pressure-tight to the outside.

The bottom opening preferably has an area of at least 500 cm 2, more preferably of at least 1000 cm 2, still more preferably of at least 2000 cm 2, still more preferably of at least 5000 cm 2, still more preferably of at least 1000 cm 2. The bottom opening may be at least 2%, preferably at least 5%, even more preferably at least 10%, even more preferably at least 20%, even more preferably form at least 50% of the soil and / or an opening between float chamber and pre-chamber. In a specific embodiment, the bottom opening can (the ground apart from an apertured

provided cover, such as a grille) form completely (at least substantially). In such an embodiment, therefore, the ground is (apart from a cover, which prevents people falling through the opening) completely open. In general, the bottom opening is provided with a cover, which in turn has a plurality of cover apertures to be covered, such as for example with a grille. Overall, is realized in a simple manner a passageway between the prechamber and the underlying space, in particular the space described above, so that in a simple way the sound emission is reduced.

In a specific embodiment, a blower is provided exactly. In alternative embodiments, more than one fan can,

for example (at least) two (at least) three or (at least) four fans may be provided.

Preferably, the free-fall simulator is configured so that a maximum possible speed of the airflow in the balance chamber (11) does not exceed a value of 220 km / h in particular from 200 km / h.

Specifically, when a fan is provided, this may have a diameter of 3 to 7 m, preferably 4 to 6 m, even more preferably 4.5 to 5.5 m, for example, 5 m, having. Thus, preferably a relatively small, "low performance" blower is used, the still hovering of persons (for example, up to 120 kg) in a prone position or a float of

People allowed in the supine position (in normal weight). This is the

Sound generation reduced by simple means.

A height of the free fall simulator is at most 22 m, preferably not more than 20 m (calculated from a lowest point of the free-fall simulator). In relation to a surrounding mounting, the height of the free fall simulator maximum 12 m, preferably at most 10 m, respectively. Preferably at least 8 m, more preferably at least 10 m of the free-fall simulator are arranged under the level of the surrounding installation location. Overall, therefore, a comparatively low height of the free fall simulator is proposed, as exemplified by an upper air guide (to the blower) (with a round cross-section and thus attributable need for space-consuming intermediate pieces in the two vertical air guide portions -eckig from round to (right) and vice versa lead), a small contraction ratio of preferably 2.0 to 3.5 and / or a version with only one blower can be achieved.

In a specific embodiment, a wall of the float chamber is formed (apart from a manhole to enter the float chamber) without openings. In particular, can be dispensed with perforated sheets in this area. Normally perforated plates could also achieve a sound reduction and a reduction of "buffeting noise" in this area. In particular, the inventive "cavity-solution" or the

However, the bottom opening in the prechamber can in such openings or

Perforated sheets are dispensed in the balance chamber. A wall of the

Floating chamber can be (at least substantially fully) transparent. This observation of the floating people is facilitated.

The object is further achieved by a free-fall simulator, in particular closed in itself air circuit, preferably of the type described above, comprising an air duct (10) having a float chamber (11) can float in the persons due to a vertically upward directed air stream, with a lower floating chamber opening at a lower end and an upper floating chamber opening at an upper end and at least one blower for generating the air flow. In a first alternative, the suspension chamber (11) is an inlet nozzle (22) is arranged upstream, wherein a in a wall of the inlet nozzle, preferably in a neck portion

Nozzle opening, in particular a perforated plate, for the exchange of air,

in particular the outlet or inlet of air, is provided, wherein the

Nozzle opening with an outside of the free fall simulator, possibly via

respective pipes, is connected. Alternatively or additionally, the air duct (10) for guiding the air a lower portion (18), wherein the lower portion (18) having a lower opening (33) for

Exchange, in particular outlet or inlet is provided of air, wherein the lower opening (33) with an outer side of the free-fall simulator, if necessary, connected via respective tubes. This can be done an effective air exchange. The noise generation is relatively low.

In a preferred embodiment, in a lower portion of the

Air duct for guiding the air to exchange a lower opening, in particular the outlet or inlet is provided by air and in which

Space between an upper opening for exchanging air, in particular the outlet or inlet of air. The lower and upper openings are preferably provided with an exterior of the free-fall simulator (i.e. the atmosphere), for example the corresponding pipes, respectively. The upper opening provides for (nearly) atmospheric pressure in the balance chamber. If both upper and lower opening are open, in the lower air guiding air to escape due to the overpressure; a corresponding amount of air can then re-enter through the upper opening as fresh air. In a preferred (normal) mode, the lower opening is closed and the upper opening is open. The upper opening in the intermediate space has the advantages of a (practically) lack of negative pressure in the antechamber and in the flight chamber (which brings static benefits) and that the need for pressure lock omitted, thus the structure of the free-fall simulator is simplified. In any case, on

synergistic manner, the connection between the pre-chamber and

Between room utilized. Furthermore, a simple way

carried out exchange of air and the supply of fresh air. Optionally, at least one fan to assist the air exchange (especially by blowing or sucking out) can be provided by the lower and / or upper opening.

Optionally, the free-fall simulator may be configured such that in addition to the upper and / or lower opening, is provided, no further opening, in particular in an upper portion of the air duct. Further may be provided (in addition to or alternatively to an air exchange), to cool the air flow in the free-fall simulator generally cooling devices.

The connection means for connecting the lower and / or upper opening with the outside of the free-fall simulator (in particular pipes) may be made comparatively thick and / or be connected to a silencer and / or with an optionally electrical

be provided closing device. Specifically, the lower opening or the corresponding lower connecting means (bottom pipe) can be switched to a temporary (intense) ventilation (in which case due to the overpressure in the lower air guide air exits). the respective

Closing devices can be controlled, or even variable, for example via a (possibly central) system control in a control chamber. The lower and / or upper opening can be closed (in discrete or continuous increments) optionally completely and / or gradually. (Thus, for example, a half-open state, or a three-quarter opened state), an opening degree of the lower and / or upper opening can be controlled, in particular regulated, to be. Furthermore, an air flow through the bottom and / or top opening can be controlled, in particular, be adjustable. Overall, an effective way of ventilation and cooling is realized.

The lower and / or the upper opening may be (each) associated with a silencer. This noise pollution is reduced.

Basically, the free-fall simulator or components thereof can be made of metal or plastic, in particular fiber-reinforced, preferably

glass fiber-reinforced, plastic. Preferably, an upper

Air distribution of fiber-reinforced, in particular glass fiber reinforced plastic formed. Also, the inlet nozzle or one or more diffusers of the air duct can (at least substantially), optionally completely be formed of a fiber-reinforced, in particular glass fiber reinforced plastic. Alternatively, however, these elements can also be formed from metal. Preferably, the lower air guide (at least substantially)

optionally completely, made of concrete and / or metal formed. However, the lower air guide may also be made of (fiber-reinforced) plastic,

in particular, be glass fiber reinforced plastic is formed. Also, a first vertical air duct (for example, an air guide, located downstream of the float chamber subsequently) and / or a second vertical air flow (thus, for example, an air duct, the downstream upper at the

Air guide connects) can (at least substantially), optionally completely, made of metal (or alternatively plastic, in particular

(Glass fiber reinforced) plastic). Overall, the

, Enables a low weight material choice, particularly when the upper air guide is formed from glass fiber reinforced plastic. In particular, a configuration of the air ducts, preferably the upper air guide, from a (glass fiber reinforced) plastics material in combination with a round cross-section reduced to synergistically weight and manufacturing costs, since circular element can be made from (fiber-reinforced) plastic particularly simple. By the formation of fiber reinforced plastic (with respect to the upper air guide) the weight of the upper air duct is reduced, which is advantageous overall required to static and

impact material used in the underlying sections. A

The basic idea is to use industrially prefabricated duct sections so that they must be built complex not on site, such as concrete. In a specific embodiment, an upper air guide of the air duct at least partly a round cross-section. A lower air guide of the air duct, at least in sections have a polygonal cross section.

The float chamber can be made comparatively small (larger float chambers are generally more of the pressure exerted as a sport free fall, for example, for teams). For example, the flight chamber may include (at a bottom or base web) less than 3.9 m, preferably less than 3.7 m, or in a (normal, z. B. in an amount of 2, 1 m above the ground . the ground network) flight operations, the floating chamber has a diameter of less than 4.3, preferably less than 4.0 m have. The freefall simulator can be designed and configured to provide a maximum speed of the

to achieve air flow, in which a floating of a person in prone position and up to 120 kg in the supine position is provided to 90 kg (without bat suits).

The float chamber may be 5 to 7, in particular 6 m high. Furthermore, the floating chamber can be round (circular) or polygonal (square 12) wall. The hover chamber also can move up

expand (diffuser-like).

The lower opening and / or the top opening and / or the nozzle orifice and / or the bottom opening can be controlled with respect to their degree of opening, in particular regulated be (discretely or continuously, for. Example, in at least two or at least three stages).

Further embodiments result from the subclaims.

The invention is also described with respect to further features and advantages with reference to embodiments that are illustrated by the figures.

show:

Fig. 1 is a schematic view of a freefall simulator according to the invention; FIG. 2 shows a section of a freefall simulator according to the invention; and

FIG. 3 shows a detail of Figure 2 with further details.

In the following description, the same reference numerals are used for identical and identically acting parts.

1 shows a schematic view of an inventive

Free-fall simulator with a self-contained air circuit, which is formed by an air duct 10 having a floating chamber 11. In the balance chamber an upward air current can be generated by a fan 12, so that people (at least in abdominal and

can supine) float if necessary. A normal flying height is marked with the reference numeral 13 (dashed line). A bottom of the float chamber 11 is designated by the reference numeral 14

(Float chamber floor).

The freefall simulator has a first vertical portion 15, in which the float chamber 11 is located and in which the air stream flows from bottom to top; an upper portion 16; a second vertical portion 17, in which the fan 12 is arranged; and a lower portion 18. In corner portions 19 (only indicated) deflection vanes may be provided 20th

A cross section of the air flow passage is partially round and partially square, for example rectangular, in particular square. In a first

Transfer section 21 (the only apparently has the form of a nozzle, due to the two-dimensional representation) is a round cross-section of the

Air duct 10 transferred to a polygonal cross-section (in

Viewed flow direction). An inlet nozzle 22 which is located below the float chamber 11 serves as a second transfer section, in which the polygonal cross section of the air duct 10 is transferred back to a round cross-section (as seen in the flow direction). Thus, particularly the upper portion 16 has a circular cross section and the lower section 18 has a squared.

The floating chamber 11 forms a diffuser (thus widens upwards), so that at higher levels a lower air velocity prevails than in the lower areas. Upstream of the fan 12 is an (optional) intermediate piece 23 (which is straight, formed expanding or twitch) arranged. Another diffuser 24 is positioned downstream of the fan 12 in the second vertical portion 17 of the air duct 10 degrees. Immediately after the fan 12, a guide vane 25 is provided.

In the following specific variants of the free fall simulator are described in terms of the dimensions of individual components. It is explicitly pointed out (this also applies to the above, the free fall simulator) that the elements and features described do not have to necessarily be in combination. The flight chamber may be 7 m high and / or may have a circular wall and / or can have a diameter of 3.66 m on the ground (- network) and / or 3.96 m in a normal flying height 13 and / or 4.72 m having at the upper end.

One or more of the corner regions 19 may be formed expanding, thus forming a diffuser at the same time. Thus, the height and therefore the acceptance and the cost of the free fall simulator can also be reduced.

The blower 12 may have a diameter of 5 m and / or a maximum power of 500 kW.

Each of the corner areas 19 or the diffusers 23, 24 can be made of either

Plastic, in particular fiber-reinforced plastic, preferably glass-fiber-reinforced plastic and / or metal (particularly comprising aluminum or an aluminum alloy) may be formed. The deflection vanes 20 may be cooled. The inlet nozzle 22 may (preferably) of plastic, in particular fiber-reinforced plastic, preferably glass-fiber reinforced plastic, may be formed and / or metal (e.g. steel).

At least portions (possibly the entire free fall simulator),

in particular, the first vertical section 15 or at least the inlet nozzle 22 may be in a housing, preferably concrete housing to be accommodated.

A maximum speed that can be allowed by the fan 12, the flow velocity in the balance chamber 11, either to the flash chamber base 14 or in the region of the normal flying height 13, 220 km / h preferably from 200 km / h and amount (e.g., B . 2m above

Hover chamber floor).

The total height of the free fall simulator may be less than 20 m.

Figure 2 shows a schematic section of an inventive

Freefall simulator. Concretely, a hover chamber 11 and an inlet nozzle 22 to see as well as on the hover chamber 11 can enter an antechamber 26. Reference numeral 37 shows an opening between

Suspension chamber 11 and antechamber 26. To the float chamber 11 and in particular the inlet nozzle 22 is disposed 27 a (concrete) housing, so that 27 and an outer wall 28 of the inlet nozzle 22 is formed between the housing, a gap 29th The intermediate space 29 is connected via a

Inspection opening 30 accessible.

Further, the pre-chamber 26 and the space 29 via a

Bottom opening 31 is connected in a bottom 32 of the antechamber 26 together. The bottom opening 31 is drawn schematically in FIG. 2

The areas around the bottom opening 31 shown in Fig. 3 again increased.

In Figure 1, a lower opening 33 (indicated by a black circle) for the exchange, in particular outlet or inlet, provided by air. In Figure 3 (also by a black circle indicated schematically) has an upper opening 34 which is also formed for the exchange of air, in particular the outlet or inlet of air. The lower opening 33 is located in the lower portion 18 of the air duct 10, the upper opening 34 connecting the space 29 to an outside (the atmosphere). Through the upper opening 34 a can (approximately) atmospheric pressure be set in the pre-chamber 26 and into the float chamber. 11 Insofar 34 meets the upper opening of a double function, namely the realization of a (at least approximately) atmospheric pressure, which improves the static and thus reduces the manufacturing cost.

The lower opening 33 and the upper opening 34 can be connected via corresponding connection lines, in particular connecting pipes with the exterior of the free-fall simulator, for the exchange of air. In a first (normal) mode of operation, the lower opening 33 is closed and the top opening 34 open. An additional ventilation but also the lower opening 33 can be opened, in which case in the lower portion 18 exiting air due to the overpressure in the lower portion 18 of the air duct 10, and is sucked through the upper opening 34th The openings 33, 34 corresponding closing devices can be associated with the

Optionally (for example, via a central system control) are controlled or regulated.

Furthermore, the openings 33, 34, muffler (not shown) may be associated. In a neck portion 35 of the inlet nozzle 22 (see FIG. 1) may be a schematically shown as a black rectangle perforated plate 36 can be provided. This allows air from the inlet nozzle 22 in the (illustrated in Figures 2 and 3), intermediate chamber 29 and the bottom opening 31 in the antechamber 26 and flow through the suspension chamber. 11 By this mass flow occurring cavity resonances be further reduced, if appropriate, reducing the noise generation.

It should be noted that all the parts described above on its own and in any combination, in particular in the

Drawings details shown, are claimed as essential to the invention. Amendments to this are familiar to the expert.

LIST OF REFERENCE NUMBERS

10 air duct

11 hover chamber

12 fan

13 Normal altitude

14 hover chamber floor

15 first vertical portion

16 Upper section

17 Second vertical portion

18 Lower section

19 corner

20 Umlenklamelle transfer section

inlet nozzle

connecting piece

diffuser

guide vanes

antechamber

casing

outer wall

gap

inspection opening

bottom opening

ground

lower opening

top opening

neck section

perforated sheet

Opening between the float chamber and pre-chamber

Claims

Resonance chamber claims
1. Free fall simulator, closed in itself air circuit comprising
an air duct (10) having a float chamber (11) can float in the persons due to a vertically upward air stream with a lower
Hover chamber opening at a lower end and an upper floating chamber opening at an upper end and at least one fan (12) for generating the
Air flow, and
a pre-chamber (26) having a bottom (32), via which the float chamber (11) can be entered,
wherein the bottom (32) of the antechamber (26) has a bottom opening (31) for noise reduction.
2. Free fall simulator, closed in itself air circuit, preferably according to claim 1, comprising
an air duct (10) having a float chamber (11) can float in the persons due to a vertically upward air stream with a lower
Hover chamber opening at a lower end and an upper floating chamber opening at an upper end, just one blower (12) for generating the air flow,
an upper air guide in cross section is round, in particular circular, and wherein a contraction ratio is in a range of 2.0 to 3.5.
3. Free-fall simulator according to one of the preceding claims,
characterized in that the float chamber (11) inlet nozzle (22) is upstream, preferably wherein the inlet nozzle (22) is surrounded by a housing portion of a housing (27) such that between an outer wall (28) of the
Inlet nozzle (22) and the surrounding housing portion, an intermediate space (29) is formed, wherein the bottom opening (31), preferably the pre-chamber (26) and the intermediate space (29), wherein a volume of the intermediate space (29) preferably at least 2 times as large as a volume of the prechamber (26).
4. Free-fall simulator according to one of the preceding claims,
characterized in that a maximum total power of all provided for blower (12) or of the exactly one fan (12) is less than 600 kW, preferably less than 500 kW is.
5. Free-fall simulator according to one of the preceding claims, characterized in that the bottom opening (31) has an area of at least 2000 cm 2, preferably at least 5000 cm 2 and / or
at least 5%, preferably at least 10%, even more preferably forms at least 20% of the soil and / or
, At least substantially completely forms the base (32), apart from an apertured cover, such as a grille.
6. Free-fall simulator according to one of the preceding claims,
characterized in that the free-fall simulator is configured so that a maximum possible speed of the airflow in the balance chamber (11) in a range of 150 km / h to 220 km / h.
7. Free-fall simulator according to one of the preceding claims,
characterized in that a height of the free fall simulator maximum 22 m, preferably at most 20 m, which, further comprises at least 10 m below the ground are preferably disposed at least 8 m preferably.
8. Free-fall simulator according to one of the preceding claims,
characterized in that a wall of the float chamber (11) without openings, apart from a manhole to enter the float chamber (11) is formed and / or at least substantially fully transparent and / or without
Perforated plate is formed.
9. freefall simulator, closed in itself air circuit, preferably according to one of the preceding claims, comprising
an air duct (10) having a float chamber (11) can float in the persons due to a vertically upward air stream with a lower
Hover chamber opening at a lower end and an upper floating chamber opening at an upper end and at least one blower for generating the air flow, wherein the air guide channel (10) for guiding the air having a lower portion (18), wherein the lower portion (18) a lower opening (33) for exchange, in particular outlet or inlet is provided of air, wherein the lower opening (33) with an outer side of the free-fall simulator, is optionally connected via respective tubes.
10. Free-fall simulator according to one of the preceding claims 3-9,
characterized, in that
an upper opening (34) for exchanging air, in particular the outlet or inlet of air, is provided in the intermediate space (29),
preferably wherein the lower (33) and upper (34) opening with an outside of the free-fall simulator, for example, via corresponding pipes connected.
11. Free-fall simulator according to one of the preceding claims,
characterized, in that
the lower (33) and / or upper (34) opening and / or bottom opening (31), in particular gradually, are optionally completely closed and / or an opening degree of the lower and / or upper opening controllable, in particular adjustable and / or is an air flow through the bottom and / or top opening controllable, in particular controllable.
12. Free-fall simulator according to one of the preceding claims 7 to 11,
characterized, in that
the bottom (33) and / or upper (34) (each) is associated with a silencer opening.
13. Free-fall simulator according to one of the preceding claims, characterized in that an upper air guide (16) and / or the inlet nozzle (22) and / or one or more diffusers (23, 24) of the air channel at least substantially completely of a fiber-reinforced, in particular glass fiber reinforced plastic consists / consist, and / or a lower air guide (18) and / or first vertical air guide (15) and / or second vertical air guide (17) at least substantially completely consists / consist of concrete and / or metal.
14. Free-fall simulator according to one of the preceding claims, characterized in that an upper air guide (16) of the air duct sections having a circular cross section at least and / or
a lower air guide (16) of the air duct at least in sections has a polygonal cross section.
PCT/EP2016/051450 2016-01-25 2016-01-25 Free fall simulator WO2017129223A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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