I-5 (EARLY) Soviet Fighter-Biplane. In the thirties it was the era of biplane fighters. In the Soviet Union they were designed by N. N. Polikarpov -“The King of Fighters”. The first Soviet mass-production fighter aircraft I-5 has constructed by him in 1930. Two prototypes, named “VT-11” and “Klim Voroshilov”, and first serial aircraft had individual cylinder cowers.