Popp was born in
Vienna in 1886 and in 1901 his family moved to
Brno where he completed his university entrance qualification at the local grammar school. He went on to study mechanical and electrical engineering at the local Technical College and qualified with a degree in engineering in 1909. When he returned to
Vienna, Franz Josef Popp joined the Viennese company
AEG-Union as an electrical engineer. He soon became head of the department for “Electric Trains and Locomotives”, and one of his responsibilities was to develop electric locomotives for the
Mittenwald railway. At the start of the First World War, Popp joined the
Kaiserliche und Konigliche Luftfahrttruppen or "K.u.K. Luftfahrttruppen" (Austro-Hungarian Imperial and Royal Aviation Troops) as a marine engineer at the Pula base on the
Adriatic Sea (in present-day
Croatia). This is where he had spent his military service as a one-year volunteer during his course of studies. However, three weeks later he was ordered back to Vienna to oversee construction for aircraft engine production, initially at
AEG and then at the
Austro-Daimler works in
Wiener Neustadt. In this capacity, Popp traveled to Germany a number of times to visit the biggest aircraft engine manufacturers in the Reich-
Daimler,
NAG and
Benz. The purpose was to explore opportunities for the production under license of German prototypes at the Austro-Daimler works. Unfortunately, these exploratory talks came to nothing. The Austro-Daimler works went on to develop their own new 12-cylinder aircraft engine for the Austrian navy, although there was not sufficient capacity available for production of this engine. It was necessary to find a production facility that was in a position to manufacture the engine in the quantities required by the military authorities. While he was serving in
Pula, Popp had got to know the
Rapp Motorenwerke (Rapp Engine Works) in
Munich. This company had the necessary skilled workforce and production facilities for manufacturing aircraft engines, but it lacked a competitive product since its engines were not successful as aircraft engines. Given this scenario, Popp regarded the Rapp Engine works as an ideal production facility for manufacturing the 12-cylinder Austro-Daimler engine. He lobbied hard for this solution and was successful in convincing the responsible authorities to take up his suggestion. In 1916, he was dispatched to Munich as the representative of the Austrian Navy to supervise production under license at the
Rapp Motorenwerke (Rapp Motor Works). However, Popp was worried about unsatisfactory decisions and targets set by the technical and commercial managers. He became concerned that volumes determined contractually would not be complied with. To ensure compliance with production targets, Popp effectively began to take on the role of factory manager. Popp ensured that
Max Friz, a very talented young engineer at Daimler who had recently applied for a position, was hired by Rapp (Friz and Rapp were colleagues together at Austro-Daimler) . Popp understood that Rapp Motorenwerke very much needed a chief engineer with new ideas on making aircraft engines. ==The “General Director” ==