відносна товщина профілю; густина профілів у палісаді
space-chord ratio (of turbomachine cascade)
reduction ratio / gear ratio
Voltage Standing Wave Ratio (VSWR) / voltage standing-wave ratio
chord of the trajectory
reference chord
reference chord of an aerofoil
standard mean chord
chord
chord line
chord-wise aerodynamic force
external chord of a concavе-convex or flat-convex profile
first mean chord
flap reference 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)
aspect ratio
fighter-to-administrative personnel ratio
high expansion-ratio
mass ratio
power-to-weight ratio
signal-to-noise ratio (SNR; S/N)
thrust-to-weight ratio
damping ratio
attenuation ratio
base pressure ratio
weight-horsepower ratio
weight-strength ratio