Zero slide

As zero slide in are jargon of sailing , paragliding - and hang gliders -Flieger updrafts called, who are too weak to have to rise by the respective aircraft, but on the existing altitude hold.

In calm air, a glider sinks with its own sinking (typically approx. 0.5–1 m / s, in turning flight the inherent sinking increases to 1–2 m / s). However, if it is flying in an updraft that is just as strong as the glider's own sinking, the glider remains at a constant altitude. If the updraft is stronger than the self-sinking, the glider climbs.

Left: Gliding flight in calm air according to the glide ratio. Middle: Zero slide with a slight updraft. Right: Gain in altitude through stronger updraft.

See also

• Thermals
• Glide ratio

Individual evidence

1. ^ Matthias Gebhardt: Word formation in the language of glider pilots . GRIN Verlag, 2007, ISBN 978-3-638-71147-0 , p. 25 .
2. ^ Roger P. Frey: Cross country flying . Textbook for the B-license / overland authorization for paragliders and hang-gliders. 8th edition. Books on Demand, 2017, ISBN 978-3-7431-4872-7 .