Ground speed (GS)
True Airspeed corrected for winds; actual speed of airplane over the ground.
Vr
Rotation Speed
Vx
Best Angle of Climb
Vy
Best Rate of Climb
Vso
Stall speed in landing configuration
Vs
Stall Speed in clean configuration
Vfe
Maximum Flap Extension Speed
Vno
Normal Operating Speed
Vne
Never Exceed Speed
Best Glide speed
based on best glide ratio
Weight and Balance
Weight x Arm = Moment
Moment/Weight=CG
Datum point is forward of firewall (point of reference)
Arm is expressed as inches aft of datum
Va
Maneuvering speed (decreases with weight, speed at which full scale flight control movement will not result in structural failure)