First Vertical Wind Tunnel to Reopen in Europe


Indoor Skydiving Bottrop In Germany
May 11, 2020
Charlie Centa

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There’s a light at the end of a vertical wind tunnel in Europe – a symbolic step forward for the indoor skydiving industry.

On Monday, 11th of May, Indoor Skydiving Bottrop – a tunnel built by leading manufacturer, Indoor Skydiving Germany Group (ISG) – is reopening its doors to the public on the basis of its patented Air-Exchange Louver system.

“I am happy to announce that Indoor Skydiving Bottrop, Germany, once again, is the first to lead the industry into a new era. It is officially certified by one of Germanies most recognized hygienic institutes that freefall simulators equipped with the patented ISG Louver System, by design, exchange and mix sufficient volumes of air during operation, such that there is no risk of transmission of COVID-19 inside the flight chamber”, said Boris Nebe, Managing Director of Indoor Skydiving Germany.

“Flying with us always fulfilled the highest safety standards but now it is officially certified that also from a hygienic point of view there are no reservations or concerns regarding safety.”

In addition to this safety certificate, Indoor Skydiving Bottrop developed new operational standards and procedures for all customer groups including military forces, skydivers, sport flyers and first-time entertainment customers. Those procedures were officially certified to fulfil all safety requirements under the conditions of the COVID-19 pandemic and Indoor Skydiving Bottrop was granted by the German authorities to reopen its business for all customers groups.

Could Louver Systems be the Future of Recirculating Tunnels?

LouverA louver (or louvre) is simply an angled slat that allows air to pass through a wall or door – from one space to another.

ISG has a patented adjustable louver system that allows operators to open louvers placed within the recirculating wind tunnel to allow fresh air from outside to enter into the tunnel. This was originally thought of as a way of cooling down recirculating tunnels, which would generate a lot of heat from the movement of the propeller blades – something we’ve previously written about here.

Now, in the face of COVID-19, the louver has become a way for the German tunnel manufacturer to help its operators increase the quality of the air and reduce the risk of contamination.

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Published: May 11, 2020 | Last Updated: December 2, 2021

First Vertical Wind Tunnel To Reopen In Europe
Written by,
Charlie Centa
Charlie Centa is the owner of two of the world's leading skydiving websites: and sister site, Originally from the UK, he now lives in sunny Spain where he spends his time between living in a van in the mountains climbing and skiing, and working on his websites. When he's not doing either of those things, Charlie can be found writing witty bios about himself!

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