Safety net for a vertical wind tunnel

A safety net for a vertical wind tunnel comprising:

• an annular frame arranged therearound a flight area, wherein the annular frame has an upper surface, a lower surface, an outer surface and an inner surface wherein said outer and inner surfaces extend from said upper surface to said lower surface, such that the flight area is defined by said inner surface;
• a plurality of cables forming a net area over the flight area, said plurality of cables extend from the outer surface on one side of said flight area to the outer surface of an opposite side of the said flight area such that said net area is defined by said outer surface,
• wherein each end of plurality of cables is attached to the outer surface of the annular frame via springs, wherein the springs and each end of plurality of cables is enclosed by the annular frame so that only cables are exposed to the flight area and a user of the safety net,
• a slider arranged at the inner surface of the annular frame, wherein the slider extends from the upper surface to the lower surface of the annular frame in perpendicular to said cables, the slider further comprises guide openings extending from the upper surface to the lower surface of the annular frame, said guide opening is configured to allow the cables to extend through the guide openings and to move up and down along the guide openings without touching the annular frame or any other member of the vertical wind tunnel, when a user of the vertical wind tunnel walks or falls on the net area.