The flying machines are usually launched off a pier about 9 metres (30 ft) high into the sea or body of water.
The format was originally invented in Selsey, a small seaside town in the south of England under the name "Birdman Rally" in 1971.
To participate, each team must submit an application and their contraption must meet the criteria set forth by Red Bull.
In Australian Flugtags the wingspan is limited to 8 metres (26 ft) and the weight (not including pilot) to 180 kilograms (400 lb).
[4]The record for the longest flight is 258 feet (78.6 m), set on September 21, 2013, at the Flugtag in Long Beach, California, by "The Chicken Whisperers" team in front of a crowd of 110,000.