The Jet Age (1958 - Today)

Area Rule

Creating a more consistent total cross section—by narrowing an aircraft's fuselage where the wings join the body, for example—reduces drag at high speeds. This concept, called area rule, was first applied to jet fighters (producing their distinctive "Coke-bottle" shape) and later to such airliners as the Boeing 747, Douglas DC 8, McDonnell Douglas DC 10, and Concorde.

Credit: NASA

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