V-speeds

V-speeds

A series of designators used by the FAA and listed in 14 CFR 1 to describe certain flight conditions.

VA — design maneuvering speed.

VB — design speed for maximum gust intensity.

VC — design cruising speed.

VD — design diving speed.

VDF/MDF — demonstrated flight diving speed.

VF — design flap speed.

VFC/MFC — maximum speed for stability characteristics.

VFE — maximum flap extended speed.

VH — maximum speed in level flight with maximum continuous power.

VLE — maximum landing gear extended speed.

VLO — maximum landing gear operating speed.

VLOF — lift-off speed.

VMC — minimum control speed with the critical engine inoperative.

VMO/MMO — maximum operating limit speed.

VMU — minimum unstick speed.

VNE — never-exceed speed.

VNO — maximum structural cruising speed.

VR — rotation speed.

VS — the stalling speed or the minimum steady flight speed at which the airplane is controllable.

VS0 — the stalling speed or the minimum steady flight speed in the landing configuration.

VS1 — the stalling speed or the minimum steady flight speed obtained in a specific configuration.

VTOSS — takeoff safety speed for Category A rotorcraft.

VX — speed for best angle of climb.

VY — speed for best rate of climb.

V1 — takeoff decision speed (formerly denoted as critical engine failure speed).

V2 — takeoff safety speed.

V2min — minimum takeoff safety speed.

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