UFO – Ultralite Flying Object

Airdesign UFO single surface by XC Paragliding in South Africa

UFO – Ultralite Flying Object


Details that do matter


During the development of the UFO, product longevity was a foremost consideration for us at AirDesign. Due to the fact that there is no supporting lower sail, the internal ribs are supporting higher loads, compared to that of conventional gliders. As with normal glider material, this internal rib material is equally susceptible to ageing, however, these ribs are normally located inside the glider – well protected from upper and lower sail. Keeping this in mind, we have supported all ribs with extra edging tape. The amount of extra work in production associated with applying this feature is similar to sewing a conventional glider with a bottom surface. Quality is important to us, and we did not want to dilute our high manufacturing standards. You will find edging tapes on the trailing edge as well as in on the nose area of the glider. We could have easily just flipped the edge over and sewn it together, but using an edging tape actually also provides a benefit by keeping the exact tension required. These features pose to increase in product weight, but are absolutely necessary to sustain and guarantee safety and durability on a long term basis.


UFO 21 & 18


By now achieving EN-B certification for the UFO 21, we can now officially declare the everyday suitability of this incredible glider.The first ever certification of a single surface wing has been a sensation the world over. We are now proud to announce the certification of the UFO 18. All sizes of the UFO are easy to fly and exhibit very forgiving handling characteristics. With remarkably simple and stable launch phase response, coupled with extremely relaxed flight behaviour, the UFO is an incredibly safe and fun glider.


UFO – Design


The UFO is a revolutionary single surface glider with no bottom sail, developed by Stephan Stieglair and Joe Keppler. With this new design, it has been possible to reduce glider weight to just 1.7kg (in size 16²).

First appearance and impression of the UFO is that the design is completely unconventional, but we’ve built in flying characteristics to be more or less the same as what you’d expect from a standard conventional glider. 

Our main goal during development was to create a very light and usable glider. For alpine applications, it’s important to have a wing with good speed and durability. The UFO fulfils both criteria. Trim speed is around 37km/h (at 90kg, size 21) and can be accelerated up to 42km/h via a speed-system. Although using lightweight materials, we’ve incorporated durability with the integration of edging tapes along the ribs. Another direct result and benefit of the concept means that the glider has an extremely low packing volume. 


The right size


Depending on the respective wing loading, the trim speed changes and so does the character of the wing: 

The green area (see chart) – represents the ideal range for intermediate pilots. The UFO flies like a conventional glider, comparable with other low-level EN-B wings. When flown in the violet area, the wing flies faster and feels more like a mini-wing – increased speed, more agility, and greater overall responsiveness – aimed at more experienced pilots. The UFO 21 can be flown at a range of 75-90kg within EN-B. Up to 120kg the glider has achieved an EN-926-1 (load-tested certification).



UFO14: Excellent option for very light pilots


UFO16: All-rounder – For light lighter pilots in intermediate style or with higher loading for that mini-wing feel


UFO18: All-rounder, suitable for most pilots


UFO21: Intermediate behaviour with EN-B


AirDesign website.


Contact us for pricing and to place your order.