Factors Affecting the Costs of Airplanes

In the 1930s, aeronautical engineer Theodore Paul Wright (1895-1970) made an important discovery during his study of aircraft production. For every doubling of the total number of aircraft produced, the cost of a newly-built aircraft fell by 15 per cent. 

In 1936, he published his findings in the paper “Factors Affecting the Costs of Airplanes”. He described that we learn by doing and therefore the cost per unit produced decreases as the total number of aircraft produced increases. We know this law as Wright’s Law.