He arrived to Argentina after evading the allies in England, passing through Rome and meeting national authorities. In his interview with Nation's President, General Perón, he was attended by a germans' daughter and glider pilot: Gisela Hilger, who would become his inseparable wife.
Shortly after arriving, he promoted his advanced ideas among the free flight enthusiasts with total economic desinterestedness. In 1949 he gives a group of enthusiasts the plans of the Ho X glider to be constructed by themselves and in 1950 grants the plans of the Ho Ib to the Gonzales Chaves glider club. In both instances he gives them his continuous guidance.
In his work in F.M.A., he always was in disadvantage with respect to the Tank group , as he did not have neither the funds nor the political influence of the last. Refering to this, there are a few words written by Horten himself on his book that could give a clear idea of this situation:
"The Argentina years:Working conditions in Argentina were even more difficult than in Germany during the war. Spruce and thin birch plywood were not available; inferior local materials had to be used. Glue was the largest problem. The General in charge of the Institute had ordered that the glue be prepared in the chemistry department. By the time it reached us, it had started to harden, and was mostly spoiled. Several aircraft were lost due to glue-failures.
The destiny of a new prototype was also peculiar: No sooner had it flown before the Public Relations Department had it sent off to some remote village, where it would be on display in a park until grass started growing from the wings.
Afterwards it was ready for the salvage yard.
Nine sailplanes were produced under these rather difficult circumstances."
was builder and consultant of F.M.A. - Instituto Aerotecnico, besides he
was Professor of Escuela Superior de Ingeniería of Fuerza Aérea
Argentina and Professor of Universidad Nacional de Córdoba in "Aerodynamics
I, II y III".
He was also the second german citizen honored by the Queen of Britain in 1975. Such disctintion had been only previously awarded to Ferdinand Graf von Zeppelin.
Living continuosly in Argentina, he participed in the development (among others) of the B-47, B-58, and the "Stealth" B2.
He died in Córdoba (Argentina) in August 14, 1993.