En la mayoría de libros que he leído no aparece la carga bélica del Ju-52, en uno sobre Aviones de Todo el Mundo, habla de 500 kg bombas... y en la wikipedia http://en.wikipedia.org/wiki/Junkers_Ju ... 2F1m_ce.29 de 450 kilos...
Ejem... del enlace que proporcionas de la wikipedia
Military use 1935-45
In 1934, Junkers received orders to produce a bomber version of the Ju 52/3m to serve as interim equipment for the bomber units of the still secret Luftwaffe until it could be replaced by the purpose designed Dornier Do 11.[6] Two bomb-bays were fitted, capable of holding up to 1,500 kg (3,300 ) of bombs, while defensive armament consisted of two 7.92mm MG 15 machine guns, one in an open dorsal position, and one in a retractable "dustbin" ventral position, which could be manually winched down from the fuselage to protect the aircraft from attacks from below.
y...
The Ju 52 first saw military service in the Spanish Civil War against the Spanish Republic. It was one of the first aircraft delivered to the fraction of the army in revolt in July 1936 as both a bomber and transport. In the former role, it participated in the bombing of Guernica. No more of the bomber variant were built after this war, though it was again used as a bomber during the bombing of Warsaw[10] during the Invasion of Poland of September 1939.
Por lo demás y por ejemplo...
http://books.google.es/books?id=OGTGKbn ... 00&f=false
http://books.google.es/books?id=hdQBTcs ... 00&f=false
Si quieres más... pero yo diría que hemos resuelto nuestro problema.
Un saludo
, que el avión llevase 1tn puede ser posible por simple capacidad, pero dudo mucho que el "lanzador", fuese capaz de soltar no una, sino media tonelada en una unica pasada... 
