Felix was very concerned about pilot orientation when testing the Exxtacy. You have to be parallel to the apparent wind with your arms tucked next to your sides to get the higher glide ratios. Of course, we are now in the refinement phase of a design type. Especially while flying in thermals with high bank a low induced drag is an important criteria for a good climbing. This is improved due to the higher aspect ratio and the shape of the tip and a optimized lift distribution.
Further advantages are a better handling, which is much more direct with a shorter roll ratio.
This is the result of the very light outer wing in combination with a new spoiler geometry and the changed wing shape. The development effort of the ATOS is higher, because the airfoils are designed for the local angle of attack which requires different moulds for ribs and spar. The new design of the flap is responsible, too, for better sinking. The sail material is different and the finish of the sail is better too, due to the experience of Bernd Weber who designed the sails for Thalhofer, the last UP HG's and continued the production of the Pegasus sails after I stopped it, the finish is know very nice. The sail will be produced at Icaro which will give us an additional Know How input.