‘VF1’ means the design flap speed for procedure flight conditions. *‘VFC/MFC’ means maximum speed for stability characteristics. ‘VFE’ means maximum flap extended speed.
'VFTO’ means final take-off speed. ‘VH’ means maximum speed in level flight with maximum continuous power. ’VLE’ means maximum landing gear extended speed.
‘VLO’ means maximum landing gear operating speed. ‘VLOF’ means lift-off speed. ‘VMC’ means minimum control speed with the critical engine inoperative. 'VMCA' means the minimum control speed, take-off climb. ‘VMCG’ means the minimum control speed, on or near ground. ‘VMCL’ means the minimum control speed, approach and landing. ‘VMO/MMO’ means maximum operating limit speed. ‘VMU’ means minimum unstick speed. ‘VNE’ means never-exceed speed. ‘VR’ means rotation speed. ‘VRA’ means rough airspeed.
VS’ means the stall speed or the minimum steady flight speed at which the aeroplane is controllable. ‘Vso’ means the stall speed or the minimum steady flight speed in the landing configuration. ‘Vs1’ means the stall speed or the minimum steady flight speed obtained in a specified configuration. ’Vs1g’ means the one-g stall speed at which the aeroplane can develop a lift force (normal to the flight path) equal to its weight. ‘VT’ means maximum aerotow speed (JAR-22 only). ‘VT’ means threshold speed. a ‘VTMAX’ means maximum threshold speed.
‘VTOSS’ means take-off safety speed for Category A rotorcraft. ‘VW’ means maximum winch-launch speed (JAR-22 only).
'VY' means speed for best rate of climb. 'V1 means take-off decision speed. The maximum speed in the take-off at which the pilot must take the first action (e.9. apply brakes, reduce thrust, deploy speed brakes) to stop the aeroplane within the accelerate-stop distance. V1 also means the minimum speed in the take-off, following a failure of the critical engine at VEF, at which the pilot can continue the take-off and achieve the required height above the take-off surface within the take-off distance. 'V2' means take-off safety speed. 'V2min means minimum take-off safety speed. 'V3' means steady initial climb speed with all engines operating.
