flap reference chord

reference chord

reference chord of an aerofoil

split flap / split-flap

flap slat CTL lever / flap and slat control lever

trailing edge flap (T.E. flap)

attitude-and-heading reference system / attitude and heading reference system (AHRS)

chord of the trajectory

space-chord ratio (of turbomachine cascade)

standard mean chord

chord

chord line

chord ratio

chord-wise aerodynamic force

external chord of a concavе-convex or flat-convex profile

first mean chord

internal chord of а bi-convex profile

mean aerodynamic chord

mean geometric chord

pressure distribution curve along the chord of an aerofoil section

propeller blade chord

second mean chord

mean aerodynamic chord (MAC)

extended-chord elevon

dive flap

flap

flap damping

flap plate (of gun shield)

air flap

brake flap

cooling flap

cowl flap

differentially operated flap