The Donut rescue system

Feb. 23, 2017

Text: Ad-Paragliders | Photo: Ad-Paragliders

The AirDesign R&D Team has developed a new rescue concept in cooperation with Mike Küng.

The AirDesign DONUT rescue system combines the positive characteristics from both square and annular rescues. The DONUT is cut like a square canopy, but in the air presents more like that of a traditional annular. Subsequently, packing is still as simple as with conventional round rescue systems.

The real-life flight behavior has been simulated in many drop-tests. The DONUT maintains its demonstrated safe and stable characteristics, even after repetitive tests and water landings.

The DONUT's revolutionary design provides fast opening times, and its four center lines create a higher projected surface, resulting in low sink values. Side vents make the rescue impressively oscillation stable.

Due to the new design concept, the team was able to reduce the total amount of material utilized compared to a conventional round rescue, placing the DONUT in the standard light rescue weight range. The 100kg max coming in at a mere 1300g, and the 120kg max at 1600g.

The producer AD-Gliders has elected to certify the rescue system utilizing the EN certification norm over that of the LTF system norm. This is due the fact that the maximum allowed sink rate for the EN system is 5.5m/s and the LTF system allows 6.7m/s. Ad-gliders has strived for even greater level of safety achieving a sink rate of just 4.6m/s.

More info @ ad-gliders.com


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