Aviation V Speeds

Vf

Design Flap Speed Upper limit able to move flaps in and out.

Va

Design maneuvering speed. The maximum speed you can fully deflect the controls and not do damage to the airplane.

Vx

Speed for best angle of climb Speed provides most altitude and shortest distance-slower.

V1

Takeoff Decision Speed Decision pilots make changes the speed. Engine cut off and still have time to stop on runway.

Vsi

Stall speed or minimum steady flight speed obtained in a specified configuration. Stall speed in specified conditions.

Vso

Stall speed or minimum steady flight speed obtained in landing configuration. Flaps down, landing gear down, lowest speed you can go.

Vfe

Maximum Flap Extended Speed Maximum speed you could go with the flaps out to have them not break.

Vle

Maximum Landing Gear Extended Speed The maximum speed you can go with the landing gear down.

Vno

Maximum speed for normal ops. Speed range, speed for normal operation, above stall, below va.

Vmca

Min control speed with critical engine out, out of ground effect.

Vmc

Minimum control speed with critical engine inoperative The lowest speed you can go with one engine out.

Vne

Never-exceed speed (red line) If you go over a speed, the red line, parts with fly off.

Vy

Speed for best rate of climb. Most altitude in shortest distance.