Nazi Germany's Last Jet Fighter - Argentina 1950
Worth a view though I haven't been able to upload a link but if you search for Mark Fenton Productions on youtube,com you should find it.
"When the war ended, lots of Nazi war crimes suspects and scientific personnel fled to Argentina, welcomed by President Juan Peron's regime. One was Kurt Tank, one of Germany's top aircraft designers. With him he carried plans for a last-ditch emergency fighter that had never been built."