Quite a clever guess, one must say, as Vincenc Strouhal (who was Czech) worked on vortex instabilities before Von Kármán :
see here
But is is not the Avia Av-135 which started its life on the allies' side. Things changed on March 15th 1939 (WWII somewhat started a bit earlier in some places
)
However, you could find another clue on AH&N, these days.