With its 23 meter wingspan the Quintus M is an entirely new concept. It has been first introduced to experts and visitors at the AERO 2011 by the cooperating partners Lange Aviation and Schempp-Hirth. The main differences between Antares 23E and Quintus M can be found in the fuselage, the outer wings and in their propulsion concepts.

While the Quintus M thanks to a 70 hp Solo combustion engine qualifies for self-launching, the Antares 23E comes up with an innovative electric propulsion system. Based on a super elliptical layout, Lange Aviation and Prof. Loek Boermans have jointly designed the inner wings. They used nine different wing airfoils and perfectly harmonized all of them. The laminar flow on the wing’s bottom side reaches up to 95% of the airfoil’s depth, on the upper surface the flow stays laminar until having followed 75% of the wing's contour.

The Quintus M’s outer wing has been designed by Schempp-Hirth, supported by Karl-Heinz Horstmann and Jan Himisch who work with the German Aerospace Center (DLR) in Braunschweig. Prof. Mark Maughmer engineered the winglets. Flaperons, respectively ailerons, are following the entire wingspan and therefore provide effective and direct controls.