After the 1920s, Soviet designers such as Cheranovsky worked independently and in secret under Stalin.[7] With significant breakthrough in materials and construction methods, aircraft such as the BICh-3,[8] BICh-14, BICh-7A became possible. Men like Chizhevskij and Antonov also came into the spotlight of the Communist Party by designing aircraft like the tailless BOK-5[9] (Chizhevskij) and OKA-33[10] (the first ever built by Antonov) which were designated as "motorized gliders" due to their similarity to popular gliders of the time. The BICh-11, developed by Cheranovsky in 1932,[11] competed with the Horten brothers H1 and Adolf Galland at the Ninth Glider Competitions in 1933, but was not demonstrated in the 1936 summer Olympics in Berlin.