Sverchkov Cycloplane

This strange machine with shovel-shaped paddle-wheel rotors that were intended to give direct lift, controlled by a system of springs and eccentrics, was built in 1909 at the expense of the Main Engineering Directorate of the Russian Army (GINJU). In the same year it was exhibited and even won a medal at the St. Petersburg Exposition of Modern Inventions. However, when tested, the machine refused to even move.

Svenskaaero Aktiebolaget / Svenska Aero Aktiebolaget (Heinkel)

Sweden
From 1921 built aircraft at Lidingo to Heinkel design; sometimes called Svenska Aero Aktiebolaget (Heinkel). S.1 was typical Heinkel (Brandenburg) twin-float seaplane, variously powered; S.11 was development; H.D.14 was torpedo- bomber biplane; H.D.17 fighter-reconnaissance biplane. Of Swedish design were Pirat two-seat multipurpose biplane, Falken trainer and Jaktfalk single-seat biplane fighter. In 1931 company liquidated and effects taken over by AB Svenska Jarnvagsverkstadern which company brought Jaktfalk production to 18.