Definition of area rule
- Called the area rule, it says that drag at high speeds is a function of an airplane's total cross-sectional area (essentially, the thickness of the fuselage). Because projections from the fuselage increase a plane's cross section, narrowing the fuselage where the wings and tail assembly attach reduces drag.
- —Aaron Nicodemus, Telegram and Gazette (Worcester, Massachusetts), 16 Oct. 2009
- an area-ruled fuselage