Essential Information

Glossary – Indoor Skydiving Terminology


Glossary - Indoor Skydiving Terminology
April 7, 2014
Indoor Skydiving Source

Wind Tunnel Related Terms
For commonly asked questions see our Indoor Skydiving FAQ’s

Recirculating  РReferring to a wind tunnel where the air is re-used by passing through a closed circular system.

Open Flow – Referring to a wind tunnel where the air passes through an open system, pulling in outside air.

Air Straightener – A constructed ‘waffle like’ structure that air passes through in order to provide a smoother flying experience.

Flight Chamber – The chamber where the indoor skydiver flies. Depending on the type of tunnel, the flight chamber may be wall-to-wall or wall-less. Wall-to-wall tunnels normally have a flight chamber constructed of glass or Plexi.

Anti-Chamber – The chamber usually featuring a bench where flyers wait to fly. The anti-chamber is usually directly outside the tunnel with easy access to the tunnel door.

Air Lock – Referring to a small chamber that allows flyers to enter the anti-chamber while the tunnel is running.

Turning Vane – A series of curved guides designed to ‘turn’ the direction of airflow.

Net – Referring to the woven wire mesh along the bottom of the flight chamber. This net allows the air to pass through the flight chamber.

Wall-to-wall – Referring to a vertical wind tunnel which features a wall around the flight chamber. Most commonly referring to wall-to-wall airflow. This means that it is impossible for the flyer to fly out the side of the column of air.

Flight Related Terms

Block Time – Referring to a purchased amount of time in a wind tunnel. IE a 15 minute ‘block’.

Rotation – Referring to two people alternating turns in the wind tunnel to give breaks. A common situation would be two flyers with 15 minutes each rotating in a 30-minute block.

Belly Flying – Flying with the belly prominently exposed to the wind.

Back Flying – Flying with the back prominently exposed to the wind.

Sit Flying/Head Up – Flying in a vertical, right side up position.

Head Down – Flying in a vertical, upside-down position.

VFS – Short for Vertical Formation Skydiving. This is a structured competition style of freeflying utilizing vertical points.

FS – Formation Skydiving. This is a structured competition style of flying. Participants fly in a belly to earth position, creating multiple linked formations.

Freeflying – Referring to flying the body in all orientations including sit and head down.

Dynamic – Referring to a style of indoor skydiving. Dynamic flying is normally represented with a style of flying your body with constant motion through all orientations.

Static – Flying in a single orientation or set of orientations with little or no movement.

Burble – The area above a flyer in reference to the wind. This area is essentially a low-pressure area which gives a feeling of low/no-wind when flown through.

Grip – A point of contact between two skydivers or indoor skydivers. IE hand to foot, hand to hand.

Formation – A linked set of skydivers or indoor skydivers.

Dive Pool – A defined list of moves or points used to create a competition.

Point – A set of grips within a pre-defined formation.

Gear Related Terms

Cordura – A common type of material used on indoor skydiving flightsuits.

Jumpsuit/Flightsuit – A one-piece suit crafted for use in a vertical wind tunnel or skydiving environment. Most commonly custom tailored for each person.

Full Face/Open Face – Referring to the type of helmet. Helmets without visors, being an open face. Helmets with visors being full face.

Visor – The clear plastic cover on a full face helmet.

Goggles – Special goggles used to block the wind from the eyes while skydiving or indoor skydiving.

Published: April 7, 2014 | Last Updated: December 2, 2021

Glossary - Indoor Skydiving Terminology
Written by,
Indoor Skydiving Source

Don’t miss an update!

Join our mailing list for the latest indoor skydiving updates delivered directly to your inbox.

Want to Fly?

Find a Tunnel Near You:

Build A Wind Tunnel - Indoor Skydiving

Leave a Comment

Your email address will not be published. Required fields are marked *