What’s AOI (Angle of Incidence)?
July 29, 2025
angle of incidence (AOI) is the angle between the wing’s chord line (an imaginary line from the leading edge to the trailing edge of the wing) and the aircraft’s longitudinal axis (a line running from the nose to the tail). It’s a fixed angle built into the aircraft’s design, unlike the angle of attack, which Read More
Standard Mean Chord (SMC)/ Mean chord line v.s Mean Aerodynamic Chord (MAC)?
July 29, 2025
SMC / Mean chord line often used in aircraft design, is a geometric parameter representing the average chord length of a wing. It’s calculated by dividing the wing’s surface area by its span, effectively representing the chord of a rectangular wing with the same area and span. While SMC relates to the wing’s overall geometry, Read More
