丹拿
Theodore von Kármán, then an Oberleutnant in the Austro-Hungarian Luftarsenal, found Joseph Ferdinand to be an "ignorant and pompous fellow." As Inspector General Joseph Ferdinand visited the Austro-Daimler Company where he was shown the company's first six-cylinder airplane engine by Ferdinand Porsche. In his autobiography von Kármán relates an exchange between Joseph Ferdinand and Porsche: