M-19

The MSrE M-19, also known as the Rubik R-02 after its designer Ernő Rubik, was a sport aircraft built in Hungary in 1937. Sándor Geönczy initially worked with Rubik on the project, but died before it was completed. The M-19 was a conventional, low-wing cantilever monoplane with a wing of elliptical planform and fixed, tailskid undercarriage. The pilot and passenger sat in tandem under a streamlined canopy that fully enclosed the cockpit, and the main wheels were covered with spats. When the design was finalised, Rubik's calculations were verified by the Aviation Institute in Warsaw and a single prototype contrstucted.