The first widely used high-performance glider The ‘18 June’ single-seater high-performance glider was the second member of the R-22 family. The airframe of the partly canvas-covered aircraft was made of wood and it was designed by the design bureau of Ernő Rubik in 1950 as an improvement of the “Courier” glider. Origin of the name The prototype of the R-22s flew for the first time on 29 June 1950. The date almost coincided with the foundation of the Union of Working Youth, so they decided to name the model “18 June”. Application 60 aircraft were produced of the ‘18 June’ in Esztergom between 1950 and 1952. The introduction of this model enabled competition with a single type of high-performance aircraft: the first competition, the IV. National Glider Championship was held in 1952.