Abrégé

Invention relates to an open vertical wind tunnels for simulating a free fall sky diving. An open vertical wind tunnel comprising: a frame structure (1), a power unit (2) and a fan assembly (3); a flow straightening assembly (4) comprising a vertical cylindrical housing (42) to be mounted above and coaxially with the propeller (3); a central cone (43) disposed within and coaxially with the vertical cylindrical housing (42); a plurality of radially oriented vertically disposed guide vanes (44), where each guide vane (44) is configured to straighten an air flow and absorb created noise; a flight platform (5); and sound attenuating panels (6) arranged around the open vertical wind tunnel.

Classes IPC  ?

• G01M 9/02 - Souffleries
• A63G 31/00 - Installations pour divertissements publics
• G10K 11/16 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général
• B64D 23/00 - Entraînement des parachutistes

Abrégé

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).

Classes IPC  ?

• G01M 9/02 - Souffleries
• A63G 31/00 - Installations pour divertissements publics

Abrégé

Invention relates to safety nets for leisure, sport events as well as military training purposes. A safety net for leisure and sport events comprising a plurality of cables, a plurality of elastic members, wherein each elastic member with a one end is attached to the end of the cable and with a second end is attached to a structure member of the safety net. The safety net further comprises a guiding unit positioned at the edge of the net area and configured to bend the cables in such a way that a part of each cable is arranged longitudinally to the central axis of the safety net, whereby the elastic elements are positioned generally longitudinally to the central axis of the safety net.

Classes IPC  ?

• A63B 5/11 - Trampolines