The Bolsheviks fought the Nazis with biplanes!
Since WWII, an amazing number of designs should impress even US manufacturers—they certainly have impressed me.
>>>The Bolsheviks fought the Nazis with biplanes!<<<
In fact Soviets were extremely advanced in aircraft design from late 1920s to mid 1930s.
At the early stage of Spanish civil war their Tupolev SB bombers were faster and more agile than literally every opposing Nazy fighter.
Soviet Rata fighter outclassed any Nazy platform as well until Germans developed and fielded Bf-109 against the Republicans and Russians.
The problem is technology advanced very fast at the time, in 1937 Stalin started his purges of military and defence industry and by 1940 everything has stalled, they ended up with 1930s technology and without any competent leadership.