The process determines the average width of an aircraft wing. This value represents the chord of an imaginary, rectangular wing that would produce the same aerodynamic forces as the actual wing. For instance, if a wing has a complex, tapered shape, this calculation simplifies it into a single, representative chord length. This simplified representation is then utilized in various aerodynamic calculations and analyses.
Its determination provides a crucial reference length for non-dimensionalizing aerodynamic coefficients, thereby enabling a more accurate comparison of performance data across different aircraft designs. Historically, this concept emerged as aircraft designs became more complex, demanding a simplified method for representing wing geometry in aerodynamic equations. Correctly establishing this characteristic is fundamental to predicting lift, drag, and pitching moment, which ensures aircraft stability and control.