Design and Development
After the abortive DC-4E proved to be complicated to maintain and uneconomical to operate, Douglas responded to the Eastern and United requests for a smaller and simpler derivative. Before the definitive DC-4 could enter service the outbreak of World War II meant production was channeled to the United States Army Air Forces and the type was given the military designation C-54 Skymaster, with US Navy aircraft designated Douglas R5D. The first aircraft, a C-54, flew from Clover Field in Santa Monica, California on 14 February 1942.
The DC-4's tricycle landing gear allowed its fuselage to be constant cross-section for most of its length, so it could be easily stretched into the later DC-6 and DC-7. A total of 1,163 C-54/R5Ds were built for the United States military services between 1942 and January 1946.
Read more about this topic: Douglas DC-4
Famous quotes containing the words design and/or development:
“The reason American cars don’t sell anymore is that they have forgotten how to design the American Dream. What does it matter if you buy a car today or six months from now, because cars are not beautiful. That’s why the American auto industry is in trouble: no design, no desire.”
—Karl Lagerfeld (b. 1938)
“The experience of a sense of guilt for wrong-doing is necessary for the development of self-control. The guilt feelings will later serve as a warning signal which the child can produce himself when an impulse to repeat the naughty act comes over him. When the child can produce his on warning signals, independent of the actual presence of the adult, he is on the way to developing a conscience.”
—Selma H. Fraiberg (20th century)