CIRJE-F-566.
Okazaki, Tetsuji, “Supplier Networks and Aircraft Production in Wartime Japan", June 2008.
The Japanese aircraft industry, which had been in a
very small scale before the Second World War, became the largest manufacturing
industry at the end of the War. In this paper, we explored the basis of the
growth of the aircraft industry during the war, focusing on No.5 Works of
Mitsubishi Heavy Industries Co.. It was made clear
that the supply of basic inputs sharply increased. Labor force and “machinery parts” were sufficiently supplied
and either of them was not a binding constraint of production. The binding
constraint was given by supply of “special parts.” To put it differently, expansion of aircraft production was
realized, as the supply of “special parts” increased. Increase of “special parts” supply and still faster increase of “machinery
parts” supply were achieved thorough expansion of
supplier network both in terms of number of suppliers and the geographical area
they were located.