Rans Inc.
Section 1
Model S-7LS COURIER
General Information
Revision - B May 8, 2007
1- 17
SYMBOLS, ABBREVIATIONS AND TERMINOLOGY
The following definitions are of symbols, abbreviations and terminology used in this
handbook and which may be of operational significance to the pilot.
GENERAL AIRSPEED TERMINOLOGY AND SYMBOLS
CAS
Calibrated Airspeed is indicated airspeed corrected for position
and instrument error.
IAS
Indicated Airspeed is the speed shown on the airspeed indicator.
TAS
True Airspeed is the airspeed relative to undisturbed air which is
CAS corrected for altitude and temperature.
VA
Maneuvering Speed is the maximum speed at which full or abrupt
control movements may be used.
VFE
Maximum Flap Extended Speed is the highest speed permissible
with wing flaps in a prescribed extended
position.
VNO
Maximum Structural Cruising speed is the speed that should not
be exceeded except in smooth air and then only with caution.
VNE
Never Exceed Speed is the speed limit that may not be exceeded
at any time.
VS
Stalling Speed or the minimum steady flight speed at which the
airplane is controllable.
VSO
Stalling Speed or the minimum steady flight speed at which the
airplane is controllable in the landing configuration.
VX
Best Angle off Climb Speed is the airspeed, which delivers the
greatest gain of altitude in a given horizontal distance.
VY
Best Rate off Climb Speed is the airspeed, which results in the
greatest gain of altitude in a given time.