The idea of electric motor gliding

The elfin is a brand new, highly innovative e-powered motor glider with hybrid propulsion option. 

It continues the success story of the legendary high-performance motor glider STEMME S10. The breakthrough inventions for the success of the STEMME S10 came from Dr. Reiner Stemme. He was the founder of STEMME AG and developed and built this wonderful glider with his team in Strausberg/Berlin during his time as managing director there. It was certified in 1990 by the LBA (German Luftfahrtbundesamt).

A highlight in its history was the successful mission »On Top of the World« in the Himalaya region using an underwing 3D camera system from DLR. We have the ambitious objective to continue this story in a new generation of planes; therein we rely on radical innovations. We cooperate with German research institutes and the industry - so we can best incorporate today’s knowledge in this project.

The elfin design ist a completely new development using state-of-the-art technology and does not base on the existing S10. REINERSTEMME.aero GmbH is the current company of Dr. Reiner Stemme and not affiliated with STEMME AG.

Fly the new Reiner Stemme Class – side-by-side with e-power independent and safely

• side-by-side cockpit in front of the wings with panoramic view and low sill for easy entry

• retractable propeller system

• directly coupled electric motor in fuselage nose

• main battery in rear compartment for best mass balance

• auxiliary battery behind cockpit at the center of gravity

• specific wing airfoil 20e-143 without premature lift plateau, seamlessly optimized over the entire wing span

• ambitious wing-to-fuselage-intersection design with fillets for drag reduction

• turbulent root section airfoil and root twist

• outer wings foldable to 10 m (33 ft) wingspan for taxiing and hangaring

• inner wing lengthwise pivoting over fuselage for 11.5 m x 1.5 m (38 x 5.0 ft) overall footprint

• enhanced safety through full ballistic parachute recovery system

• certification EASA CS-22 and FAA equivalent. 

Maiden flight is planned for summer 2021. More than 10 aircraft are already sold.