Concept and Development
SuSi, short for Super Simple, is the successful outcome of a project in development for almost ten years now. The name SuSi is the key to the concept: SIMPLICITY both in design and handling. SuSi is predictable, clean and easy to handle in all flight situations.
SuSi’s structure is also quite simple: There are 28 profile ribs on both the upper and lower surfaces of the glider. Voila’! Simple. Additional benefits of this design are that SuSi is lightweight and very affordable.
Not only is SuSi simple in concept, but also in her flight behavior, which is described by most who have flown her as "super easy."
Flying the SuSi
Launching: Even without help from the A-risers, SuSi rises rapidly overhead in a controlled manner, without a tendency to overshoot the pilot.
This allows plenty of time for any necessary corrections during the launching process. Once airborne, SuSi reacts calmly due to the combination of great dampening and stability.
Even in turbulent conditions the wing gives the pilot an extremely safe and relaxed flying experience, which is perfect for the student or beginning pilot, or experienced pilots who want stress-free flying.
Furthermore, the low aspect ratio of the wing correlates to comfortable and easy flying EVEN in thermals. In other words, a tight turning radius and flat turns can be expected with little effort on SuSi.
All these features result in an extremely relaxed and successful flying experience for the pilot, whether it is during an evening or morning “sled ride”, or when thermaling in demanding, midday conditions.
SuSi has the most passive safety of any wing we have ever developed. The response to any kind of collapse, even with high wing loading, is exceptionally mellow. Therefore, we could certify the wing (even in the very small wing sizes with high wing loading) with the EN A rating. With normal loading the SuSi is well within the mid-range of the EN A class.
In everyday flying the safety of SuSi is quite apparent. When flying in turbulence SuSi is characterized by great stability, even in accelerated flight when other wings can respond wickedly.
Collapses are very rare and usually over a small wing area. Additionally, the extensive brake range greatly minimizes the risk of an unintentional stall.
The typical glide ratio of the Susi Medium is approximately 8:1. This is more than adequate for extended thermal flights and even long crossings at XC-flights.
On speed bar the SuSi surprised our test pilots with decent speed increases and while maintaining good glide ratios. Her stability up to the maximum speed remains excellent.
However, SuSi’s real strength is in her relaxed thermaling qualities. In all kinds of conditions, SuSi moves efficiently and is “easy on the nerves”.
Due to the high passive safety level we were able to get an EN A rating with a very high wing loading.
For example: The typical weight range of the small size would be 80-100kg. But the certified weight range on the SuSi goes up to 110kg!
This extra weight range may afford pilots the opportunity to utilize a small SuSi in the extended weight capacity in a wide range of uses.
For example, pilots who want to use the lightweight version of SuSi for mountaineering, or frequently flying in strong winds where their normal medium glider would be heavier and more challenging to handle.
For pilots who want to use the wing for relaxed thermaling, we recommend the middle of the normal weight range, which in the case of size "S" whose “normal” weight range is 80 – 100 kg, would be 90kg. In the midrange of the normal loading capacity, SuSi has the most balanced in-flight characteristics and allows her to show off her strengths like tight, slow rotations in thermals.
In short, the handling and stability of SuSi for thermaling are best in the midrange of her wing loading.
|No of cells||29||29||29||29||29|
|Projected Wingspan (m)||7.61||7.99||8.33||8.67||9.00|
|Projected Surface Area (m2)||20.22||22.28||24.25||26.25||28.27|
|Projected Aspect Ratio||2.86||2.86||2.86||2.86||2.86|
|Flat Wingspan (m)||9.67||10.15||10.59||11.02||11.43|
|Flat Surface Area (m2)||23.65||26.06||28.36||30.70||33.07|
|Flat Aspect Ratio||3.95||3.95||3.95||3.95||3.95|
|Line Length (m)||5.88||6.17||6.44||6.69||6.95|
|Line Consumption (m)||232||243||254||264||274|
|Max. Profile Depth (m)||2.98||3.14||3.27||3.40||3.53|
|Min. Profile Depth (m)||0.97||1.02||1.06||1.11||1.15|
|Legal Take-Off Weight (kg)||60-90||70-100||80-110||90-120||100-130|