WO2018122575A1 - Recirculating vertical wind tunnel with passive cooling - Google Patents
Recirculating vertical wind tunnel with passive cooling Download PDFInfo
- Publication number
- WO2018122575A1 WO2018122575A1 PCT/IB2016/058072 IB2016058072W WO2018122575A1 WO 2018122575 A1 WO2018122575 A1 WO 2018122575A1 IB 2016058072 W IB2016058072 W IB 2016058072W WO 2018122575 A1 WO2018122575 A1 WO 2018122575A1
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- WIPO (PCT)
- Prior art keywords
- airflow
- recirculating
- wind tunnel
- vertical
- outlet
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
-
- 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
Definitions
- the present invention relates to vertical wind tunnels for free fall or body-flight simulators, especially to the vertical wind tunnels having airflow temperature controlled features.
- WO 2010/028980 discloses similar vertical wind tunnel having a self-contained air circuit comprising a hover chamber in which persons can hover as a result of an air stream directed vertically upward.
- the vertical wind tunnel further comprises an air inlet opening and an air outlet opening for exchanging air within the air guide channel, and redirecting lamellae.
- the air outlet opening is disposed within the redirecting lamellae, wherein the redirecting lamella is displaceable in the radial direction and wherein an air stream exiting the air outlet opening is variably adjustable by changing a cross- sectional area of the air outlet opening.
- the aim of the invention to provide effective cooling of recirculating airflow with minimal or no loss of power increasing a possibility to use more silent, less energy consuming fan assembly (less power is necessary to provide sustainable flight environment in a vertical flight chamber).
- the invention refers to recirculating vertical wind tunnel having one recirculating airflow channel as well as having two or more recirculating airflow channels.
- a recirculating vertical wind tunnel for free fall simulator which comprises a recirculating airflow channel, a first vertical part having a vertical flight chamber for free flying, a return duct for providing a recirculating airflow, a fan assembly and airflow turning vanes.
- a return duct comprising an upper horizontal part, a second vertical part and a lower horizontal part for providing a recirculating airflow.
- a fan assembly is arranged in the second vertical part of the return duct.
- Airflow turning vanes are assembled as a set of the turning vanes.
- the sets of turning vanes are arranged in each redirecting area of the recirculating airflow channel for redirecting of the airflow within the recirculating vertical wind tunnel.
- the turning vanes can partly cover a cross section of the redirecting area.
- the vertical wind tunnel further comprises an airflow outlet disposed in the upper horizontal part between the airflow turning vanes that are arranged in the redirecting area between the first vertical part and the upper horizontal part, and the airflow turning vanes that are arranged in redirecting area between the upper horizontal part and the second vertical part.
- the airflow outlet is disposed just behind the airflow turning vanes, which are arranged in redirecting area between the first vertical part and the upper horizontal part. More specific airflow outlet is disposed within the redirecting area between the first vertical part and the upper horizontal part.
- the airflow outlet further comprises a door or a hatch, which can be operated in closed position and open position. Additionally, depending on the predetermined cooling requirements, the door of the airflow outlet is configured to be variably positioned between the open and closed position.
- the vertical wind tunnel further comprises an airflow inlet disposed behind the airflow turning vanes, which are arranged in redirecting area between the upper horizontal part and the second vertical part. More specific the airflow inlet is disposed in second vertical part between the airflow turning vanes, that are arranged in redirecting area between the upper horizontal part (5) and the second vertical part (6), and the fan assembly (8). In another embodiment, the airflow inlet is disposed within the redirecting area between the upper horizontal part and the second vertical part. The airflow inlet is constantly open and in fluid communication with environment or ambient air.
- the combination of the airflow outlet behind the turning vanes, that are arranged between the first vertical part and the upper horizontal part, and the airflow inlet behind the turning vanes, tat are arranged between the upper horizontal part and the second vertical part, and further combination of the airflow outlet with door or hatch and constantly open airflow inlet allows to create the vertical wind tunnel with effective cooling performance and allows to install less powerful (more economic) fan assembly without losing a circulating airflow performance.
- the vertical wind tunnel functions so that when the vertical wind tunnel operates without necessity to cool down the circulating airflow, then the door of the airflow outlet is moved or positioned in closed position.
- the airflow inlet as well as the airflow outlet can further comprise a set of silencers.
- the silencers for the airflow inlet are disposed upstream of the airflow inlet.
- the silencers for the airflow outlet are disposed downstream of the door of the airflow outlet.
- the recirculating vertical wind tunnel further comprises an additional outlet channel connected to the upper horizontal part via the airflow outlet in order to direct the outflowing airflow out of vertical wind tunnel.
- the recirculating vertical wind tunnel further comprises an additional inlet channel connected to the vertical wind tunnel via the airflow inlet.
- the additional inlet channel is arranged horizontally and outwards from the return duct.
- the additional channel can be arranged on a common longitudinal axis of the upper horizontal part.
- the invention also comprises a method for passive cooling of said recirculating vertical wind tunnel.
- the method includes the step of opening a door of an airflow outlet to provide an outflow for a part of a recirculating airflow and inflow of an ambient air through an airflow inlet in order to cool down said recirculating airflow to a predetermined temperature.
- the inflow of the ambient air is a result of pressure drop within vertical wind tunnel due to open airflow outlet.
- the method further comprises a step of closing down the door of the airflow outlet upon reaching the predetermined temperature of said recirculating airflow.
- the airflow inlet is kept constantly open and in fluid communication with the ambient air.
- Fig. 1 is a schematic view of a recirculating vertical wind tunnel with two return ducts and wherein airflow outlets are positioned in open position;
- Fig. 2 is a schematic view of the recirculating vertical wind tunnel with two return ducts and wherein an airflow outlet is positioned in closed position;
- Fig. 3 is a close up view of the airflow outlet area, where the airflow outlets are positioned in open position. For clarity reasons one set of silencers in one of the airflow channels is not shown.
- Fig. 4 is a close up view of the airflow inlet area. For clarity reasons one set of silencers is not shown.
- Fig. 1 and Fig. 2 illustrate one embodiment of a recirculating vertical wind tunnel for free fall simulator comprising two recirculating airflow channels 1 and a first vertical part 2 having a vertical flight chamber 3 for free flying.
- Each recirculating airflow channel 1 comprises a return duct 4 which comprises an upper horizontal part 5, a second vertical part 6 and a lower horizontal part 7 for providing recirculating airflow 100.
- the recirculating airflow channel 1 further comprises a fan assembly 8 arranged in the second vertical part 6 of the return duct 4.
- the wind tunnel further comprises airflow turning vanes 9, which are arranged in each redirecting area 10 of the recirculating airflow channel 1 for redirecting of circulating airflow 100 within the recirculating airflow channel 1.
- the turning vanes 9 redirect the circulating airflow 100 generally by 90 degrees in each redirecting area 10 or corner.
- the vertical wind tunnel (Figs. 1 and 2) further comprises an airflow outlet 11 (Figs. 1, 2 and 3) disposed behind the airflow turning vanes 9 within a redirecting area 10 between the first vertical part 2 and the upper horizontal part 5, and the airflow outlet 11 comprises a door 111 which can be operated in closed position and open position.
- the door 111 of the airflow outlet 11 is positioned in closed position.
- the door 111 of the airflow outlet 11 is moved into the open position (Fig.
- the vertical wind tunnel (Figs. 1 and 2) further comprises an airflow inlet (12) (Figs. 1, 2 and 4) disposed behind the airflow turning vanes 9 within a redirecting area 10 between the upper horizontal part 5 and the second vertical part 6, and the airflow inlet 12 is constantly open and in fluid communication with ambient air.
- An additional outlet channel 113 is connected to the upper horizontal part 5 via the airflow outlet 11 in order to direct the outflowing airflow out of vertical wind tunnel.
- the same additional outlet channel 113 comprises a set of silencers 112.
- An additional inlet channel 114 is connected to the vertical wind tunnel via the airflow inlet 12 in the redirecting area 10 arranged between the upper horizontal part 5 and the second vertical part 6.
- the additional inlet channel 114 is arranged horizontally and generally on a common longitudinal axis of the upper horizontal part 5. Furthermore, the additional inlet channel 114 comprises a set of silencers 122.
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The present invention is a recirculating vertical wind comprising: a recirculating airflow channel (1); a first vertical part (2) having a vertical flight chamber (3) for free flying; a return duct (4) comprising an upper horizontal part (5), a second vertical part (6) and a lower horizontal part (7); a fan assembly (8) arranged in the second vertical part (6) of the return duct (4); airflow turning vanes (9) for redirecting of airflow within the recirculating airflow channel (1). The vertical wind tunnel further comprises an airflow outlet (11) disposed behind the airflow turning vanes (9) which are arranged in redirecting area (10) between the first vertical part (2) and the upper horizontal part (5), and an airflow inlet (12) disposed behind the airflow turning vanes (9) which are arranged in redirecting area (10) between the upper horizontal part (5) and the second vertical part (6).
Description
RECIRCULATING VERTICAL WIND TUNNEL WITH PASSIVE COOLING
Field of the Invention The present invention relates to vertical wind tunnels for free fall or body-flight simulators, especially to the vertical wind tunnels having airflow temperature controlled features.
Background of the Invention International patent application publication No. WO 2006/012647 discloses a recirculating vertical wind tunnel having passive air exchange system with adjustable inlet door and outlet door that mechanically ejects heated air from the system and draws in cooler ambient air in order to control temperature inside the wind tunnel. Both doors are arranged opposite to each other such that they create a nozzle-type flow contraction.
International patent application publication No. WO 2010/028980 discloses similar vertical wind tunnel having a self-contained air circuit comprising a hover chamber in which persons can hover as a result of an air stream directed vertically upward. The vertical wind tunnel further comprises an air inlet opening and an air outlet opening for exchanging air within the air guide channel, and redirecting lamellae. The air outlet opening is disposed within the redirecting lamellae, wherein the redirecting lamella is displaceable in the radial direction and wherein an air stream exiting the air outlet opening is variably adjustable by changing a cross- sectional area of the air outlet opening. Summary of the Invention
The aim of the invention to provide effective cooling of recirculating airflow with minimal or no loss of power increasing a possibility to use more silent, less energy consuming fan assembly (less power is necessary to provide sustainable flight environment in a vertical flight chamber).
The invention refers to recirculating vertical wind tunnel having one recirculating airflow channel as well as having two or more recirculating airflow channels.
The aim is reached by design of a recirculating vertical wind tunnel for free fall simulator, which comprises a recirculating airflow channel, a first vertical part having a vertical flight chamber for free flying, a return duct for providing a recirculating airflow, a fan assembly and airflow turning vanes.
A return duct comprising an upper horizontal part, a second vertical part and a lower horizontal part for providing a recirculating airflow.
A fan assembly is arranged in the second vertical part of the return duct. In different embodiments there can be one fan assembly in each return duct or multiple fan assemblies in each return duct, especially in the second vertical part of the return duct.
Airflow turning vanes are assembled as a set of the turning vanes. The sets of turning vanes are arranged in each redirecting area of the recirculating airflow channel for redirecting of the airflow within the recirculating vertical wind tunnel. In some embodiments the turning vanes can partly cover a cross section of the redirecting area.
The vertical wind tunnel further comprises an airflow outlet disposed in the upper horizontal part between the airflow turning vanes that are arranged in the redirecting area between the first vertical part and the upper horizontal part, and the airflow turning vanes that are arranged in redirecting area between the upper horizontal part and the second vertical part. In another embodiment the airflow outlet is disposed just behind the airflow turning vanes, which are arranged in redirecting area between the first vertical part and the upper horizontal part. More specific airflow outlet is disposed within the redirecting area between the first vertical part and the upper horizontal part. The airflow outlet further comprises a door or a hatch, which can be operated in closed position and open position. Additionally, depending on the predetermined cooling requirements, the door of the airflow outlet is configured to be variably positioned between
the open and closed position. Operator of the vertical wind tunnel can set, at what temperature of the circulating airflow to open the door and close the door or keep it partly opened or closed. The vertical wind tunnel further comprises an airflow inlet disposed behind the airflow turning vanes, which are arranged in redirecting area between the upper horizontal part and the second vertical part. More specific the airflow inlet is disposed in second vertical part between the airflow turning vanes, that are arranged in redirecting area between the upper horizontal part (5) and the second vertical part (6), and the fan assembly (8). In another embodiment, the airflow inlet is disposed within the redirecting area between the upper horizontal part and the second vertical part. The airflow inlet is constantly open and in fluid communication with environment or ambient air.
The combination of the airflow outlet behind the turning vanes, that are arranged between the first vertical part and the upper horizontal part, and the airflow inlet behind the turning vanes, tat are arranged between the upper horizontal part and the second vertical part, and further combination of the airflow outlet with door or hatch and constantly open airflow inlet allows to create the vertical wind tunnel with effective cooling performance and allows to install less powerful (more economic) fan assembly without losing a circulating airflow performance.
The vertical wind tunnel functions so that when the vertical wind tunnel operates without necessity to cool down the circulating airflow, then the door of the airflow outlet is moved or positioned in closed position.
When it is necessary to cool down the circulating airflow in the vertical wind tunnel, then the door of the airflow outlet is moved or positioned into the open position creating a pressure drop in the return duct, in result of which ambient air is drafted into the return duct through the airflow inlet. Upon reaching a predetermined airflow temperature, the door of the airflow outlet is moved or positioned again into the closed position.
The airflow inlet as well as the airflow outlet can further comprise a set of silencers. The silencers for the airflow inlet are disposed upstream of the airflow inlet. The silencers for the airflow outlet are disposed downstream of the door of the airflow outlet.
The recirculating vertical wind tunnel further comprises an additional outlet channel connected to the upper horizontal part via the airflow outlet in order to direct the outflowing airflow out of vertical wind tunnel.
The recirculating vertical wind tunnel further comprises an additional inlet channel connected to the vertical wind tunnel via the airflow inlet. The additional inlet channel is arranged horizontally and outwards from the return duct. In another embodiment the additional channel can be arranged on a common longitudinal axis of the upper horizontal part.
The invention also comprises a method for passive cooling of said recirculating vertical wind tunnel. The method includes the step of opening a door of an airflow outlet to provide an outflow for a part of a recirculating airflow and inflow of an ambient air through an airflow inlet in order to cool down said recirculating airflow to a predetermined temperature. The inflow of the ambient air is a result of pressure drop within vertical wind tunnel due to open airflow outlet. The method further comprises a step of closing down the door of the airflow outlet upon reaching the predetermined temperature of said recirculating airflow. The airflow inlet is kept constantly open and in fluid communication with the ambient air.
Further objects, features and advantages of the invention will be apparent from the following detailed description when taken in conjunction with the accompanying drawings. Brief Description of the Drawings
Fig. 1 is a schematic view of a recirculating vertical wind tunnel with two return ducts and wherein airflow outlets are positioned in open position;
Fig. 2 is a schematic view of the recirculating vertical wind tunnel with two return ducts and wherein an airflow outlet is positioned in closed position;
Fig. 3 is a close up view of the airflow outlet area, where the airflow outlets are positioned in open position. For clarity reasons one set of silencers in one of the airflow channels is not shown.
Fig. 4 is a close up view of the airflow inlet area. For clarity reasons one set of silencers is not shown.
Detailed description of the Invention
Fig. 1 and Fig. 2 illustrate one embodiment of a recirculating vertical wind tunnel for free fall simulator comprising two recirculating airflow channels 1 and a first vertical part 2 having a vertical flight chamber 3 for free flying. Each recirculating airflow channel 1 comprises a return duct 4 which comprises an upper horizontal part 5, a second vertical part 6 and a lower horizontal part 7 for providing recirculating airflow 100. The recirculating airflow channel 1 further comprises a fan assembly 8 arranged in the second vertical part 6 of the return duct 4. The wind tunnel further comprises airflow turning vanes 9, which are arranged in each redirecting area 10 of the recirculating airflow channel 1 for redirecting of circulating airflow 100 within the recirculating airflow channel 1. The turning vanes 9 redirect the circulating airflow 100 generally by 90 degrees in each redirecting area 10 or corner. The vertical wind tunnel (Figs. 1 and 2) further comprises an airflow outlet 11 (Figs. 1, 2 and 3) disposed behind the airflow turning vanes 9 within a redirecting area 10 between the first vertical part 2 and the upper horizontal part 5, and the airflow outlet 11 comprises a door 111 which can be operated in closed position and open position. When the vertical wind tunnel operates without necessity to cool down the circulating airflow 100, then the door 111 of the airflow outlet 11 is positioned in closed position. When it is necessary to cool down the circulating airflow 100, then the door 111 of the airflow outlet 11 is moved into the open position (Fig. 3) creating a pressure drop in the return duct 4, in result of which ambient air is drafted into the return duct 4 through the airflow inlet 12 (Fig. 4) and upon reaching a predetermined or set circulating airflow 100 temperature, the door 111 of the airflow outlet 11 is moved or positioned in the closed position. Additionally, depending on the predetermined cooling requirements, the door 111 of the airflow outlet 11 is configured to be variably positioned between the open and closed position.
The vertical wind tunnel (Figs. 1 and 2) further comprises an airflow inlet (12) (Figs. 1, 2 and 4) disposed behind the airflow turning vanes 9 within a redirecting area 10 between the upper horizontal part 5 and the second vertical part 6, and the airflow inlet 12 is constantly open and in fluid communication with ambient air.
An additional outlet channel 113 is connected to the upper horizontal part 5 via the airflow outlet 11 in order to direct the outflowing airflow out of vertical wind tunnel. The same additional outlet channel 113 comprises a set of silencers 112.
An additional inlet channel 114 is connected to the vertical wind tunnel via the airflow inlet 12 in the redirecting area 10 arranged between the upper horizontal part 5 and the second vertical part 6. The additional inlet channel 114 is arranged horizontally and generally on a common longitudinal axis of the upper horizontal part 5. Furthermore, the additional inlet channel 114 comprises a set of silencers 122.
While the invention have been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. Therefore, it is intended that the inventions not be limited to the particular embodiments disclosed herein.
Claims
Recirculating vertical wind tunnel for free fall simulator comprising:
a recirculating airflow channel (1);
a first vertical part (2) having a vertical flight chamber (3) for free flying;
a return duct (4) comprising an upper horizontal part (5), a second vertical part (6) and a lower horizontal part (7) for providing recirculating airflow (100);
a fan assembly (8) arranged in the second vertical part (6) of the return duct (4);
airflow turning vanes (9) are arranged in each redirecting area (10) of the recirculating airflow channel (1) for redirecting of airflow within the recirculating airflow channel (1); and wherein the vertical wind tunnel further comprises: an airflow outlet (11) disposed between the airflow turning vanes (9) which are arranged in the redirecting area (10) between the first vertical part (2) and the upper horizontal part (5) and the airflow turning vanes (9) which are arranged in redirecting area (10) between the upper horizontal part (5) and the second vertical part (6), and the airflow outlet (11) comprises a door (111) which is configured to be positioned in closed position and open position,
an airflow inlet (12) disposed between the airflow turning vanes (9), which are arranged in redirecting area (10) between the upper horizontal part (5) and the second vertical part (6), and the fan assembly (8), and the airflow inlet (12) is constantly open and in fluid communication with ambient air; wherein the airflow outlet (11) is configured so that, when the vertical wind tunnel operates without necessity to cool down the circulating airflow (100), then the door (111) of the airflow outlet (11) is positioned in closed position; and
when it is necessary to cool down the circulating airflow (100) in the vertical wind tunnel, then the door (111) of the airflow outlet (11) is moved into the open position creating a pressure drop in the return duct (4), in result of which ambient air is drafted into the return duct (4) through the airflow inlet (12) and upon reaching a predetermined airflow temperature, the door (111) of the airflow outlet (11) is positioned in the closed position.
The recirculating wind tunnel according to Claim 1 characterized in that the airflow inlet (12) is disposed behind the airflow turning vanes (9) within the redirecting area (10) arranged between the upper horizontal part (5) and the second vertical part (6).
The recirculating vertical wind tunnel according to Claim 1 or 2 characterized in that the airflow outlet (11) is disposed behind the airflow turning vanes (9) within the redirecting area (10) arranged between the first vertical part (3) and the upper horizontal part (5).
The recirculating vertical wind tunnel according to any Claim characterized in that depending on the predetermined cooling requirements, the door (111) of the airflow outlet (11) is configured to be variably positioned between the open and closed position.
The recirculating vertical wind tunnel according to any Claim characterized in that airflow outlet (11) further comprises an additional outlet channel (113) connected to the upper horizontal part (5) via the airflow outlet (11) in order to direct an outflowing airflow out of vertical wind tunnel.
The recirculating vertical wind tunnel according to any Claim characterized in that airflow inlet (12) further comprises an additional inlet channel (114) connected to the vertical wind tunnel via the airflow inlet (12).
The recirculating vertical wind tunnel according to any Claim characterized in that the airflow outlet (11) further comprises a set of silencers (112) disposed downstream of the door (111) of the airflow outlet (11).
The recirculating vertical wind tunnel according to any Claim characterized in that the airflow inlet (12) further comprises a set of silencers (122) disposed upstream of the airflow inlet (12).
Method for passive cooling of the recirculating vertical wind tunnel according to any of claims 1 to 8, wherein the method includes the step of opening a door (111) of an airflow outlet (11) to provide an outflow for a part of a recirculating airflow (100) and inflow of an ambient air through an airflow inlet (12) in order to cool down said recirculating airflow (100) to a predetermined temperature and a step of closing down the door (111) of the airflow outlet (11) upon reaching the predetermined temperature of said recirculating airflow (100), wherein the airflow inlet (12) is kept constantly open and in fluid communication with the ambient air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2016/058072 WO2018122575A1 (en) | 2016-12-29 | 2016-12-29 | Recirculating vertical wind tunnel with passive cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2016/058072 WO2018122575A1 (en) | 2016-12-29 | 2016-12-29 | Recirculating vertical wind tunnel with passive cooling |
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| Publication Number | Publication Date |
|---|---|
| WO2018122575A1 true WO2018122575A1 (en) | 2018-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/IB2016/058072 WO2018122575A1 (en) | 2016-12-29 | 2016-12-29 | Recirculating vertical wind tunnel with passive cooling |
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| Country | Link |
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| WO (1) | WO2018122575A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109646962A (en) * | 2018-12-25 | 2019-04-19 | 中国航天空气动力技术研究院 | A kind of single flow recreation wind tunnel exhaust structure |
| CN110006619A (en) * | 2019-05-23 | 2019-07-12 | 重庆大学 | A kind of multi-function windtunnel for simulating disaster-ridden evil coupling |
| CN110044575A (en) * | 2019-05-23 | 2019-07-23 | 重庆大学 | The wind-tunnel of the prominent wind scorpion of the mobile downburst of analog |
| CN110398339A (en) * | 2019-06-28 | 2019-11-01 | 中国航天空气动力技术研究院 | A kind of condition determination method meeting the multistage full free flight wind tunnel test law of similitude |
| CN113188752A (en) * | 2021-06-11 | 2021-07-30 | 日照坤仑智能科技有限公司 | Unsteady vertical wind tunnel |
| CN114279673A (en) * | 2021-12-29 | 2022-04-05 | 中国航天空气动力技术研究院 | Simulation electric arc wind tunnel diffusion section structure with variable inlet area |
| US11707689B2 (en) | 2018-11-16 | 2023-07-25 | Ifly Holdings, Llc | Recirculating vertical wind tunnel |
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| US3484953A (en) * | 1967-05-15 | 1969-12-23 | Ray H Norheim Jr | Apparatus for simulating free fall through air |
| US20040115593A1 (en) * | 2002-08-20 | 2004-06-17 | Hatlestad Kathryn W. | Free fall simulator |
| WO2010028980A1 (en) * | 2008-09-11 | 2010-03-18 | Indoor Skydiving Bottrop Gmbh | Free fall simulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3484953A (en) * | 1967-05-15 | 1969-12-23 | Ray H Norheim Jr | Apparatus for simulating free fall through air |
| US20040115593A1 (en) * | 2002-08-20 | 2004-06-17 | Hatlestad Kathryn W. | Free fall simulator |
| WO2010028980A1 (en) * | 2008-09-11 | 2010-03-18 | Indoor Skydiving Bottrop Gmbh | Free fall simulator |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11707689B2 (en) | 2018-11-16 | 2023-07-25 | Ifly Holdings, Llc | Recirculating vertical wind tunnel |
| US12070698B2 (en) | 2018-11-16 | 2024-08-27 | Ifly Holdings, Llc | Recirculating vertical wind tunnel |
| CN109646962A (en) * | 2018-12-25 | 2019-04-19 | 中国航天空气动力技术研究院 | A kind of single flow recreation wind tunnel exhaust structure |
| CN110006619A (en) * | 2019-05-23 | 2019-07-12 | 重庆大学 | A kind of multi-function windtunnel for simulating disaster-ridden evil coupling |
| CN110044575A (en) * | 2019-05-23 | 2019-07-23 | 重庆大学 | The wind-tunnel of the prominent wind scorpion of the mobile downburst of analog |
| CN110006619B (en) * | 2019-05-23 | 2023-12-08 | 重庆大学 | Multifunctional wind tunnel simulating multi-disaster coupling |
| CN110044575B (en) * | 2019-05-23 | 2024-01-26 | 重庆大学 | Wind tunnel capable of simulating movable down-stroke storm surge effect |
| CN110398339A (en) * | 2019-06-28 | 2019-11-01 | 中国航天空气动力技术研究院 | A kind of condition determination method meeting the multistage full free flight wind tunnel test law of similitude |
| CN113188752A (en) * | 2021-06-11 | 2021-07-30 | 日照坤仑智能科技有限公司 | Unsteady vertical wind tunnel |
| CN113188752B (en) * | 2021-06-11 | 2022-02-22 | 日照坤仑智能科技有限公司 | Unsteady vertical wind tunnel |
| CN114279673A (en) * | 2021-12-29 | 2022-04-05 | 中国航天空气动力技术研究院 | Simulation electric arc wind tunnel diffusion section structure with variable inlet area |
| CN114279673B (en) * | 2021-12-29 | 2024-04-05 | 中国航天空气动力技术研究院 | Simulated arc wind tunnel diffuser structure with variable inlet area |
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