Symbols, Abbreviations And Tenninology - Piper Cherokee Archer II Pilot Operating Handbook

PIPER AIRCRAFT CORPORATION
PA-28-I81, CHEROKEE ARCHER II
1.19 SYMBOLS, ABBREVIATIONS AND TERMINOLOGY
SEctiON I
GENERAL
The following definitions are of symbols, ,~"bbreviati"ns and terminology used throughout the
handbook and those which may be of added operatiOl;-al significance to the pilot.
(a) General Airspeed Terminology and Syrnbols
flf""
CAS
KCAS
GS
lAS
KIAS
M
TAS
Calibrated Airspeed means the indicated speed of an aircraft,
corrected for position and instrument error. Calibrated airspeed is
equal to true airspeed in standard atmosphere at sea level.
Calibrated Airspeed expressed in "Knots."
Ground Speed is the speed of an airplane relative to the ground.
Indicated Airspeed is the speed of an aircraft as shown on the
airspeed indicator when corrected for instrument error. lAS values
published in this handbook assume zero instrument error.
Indicated Airspeed expressed in "Knots."
Mach Number is the ratio of true airspeed to the speed of sound.
True Airspeed is the airspeed of an airplane relative to undisturbed
air which is the CAS corrected for altitude, temperature and
compressability.
VA
V FE
VNE/MNE
,
VNO
V
s
VS O
Vx
V
y
Maneuvering Speed is the maximum speed at which application of
full available aerodynamic control will not overstress the airplane.
Maximum Flap Extended Speed is the highest speed permissible
with wing flaps in a prescribed extended position.
Never Exceed Speed or Mach Number is the speed limit that may
not be exceeded at any time.
Maximum Structural Cruising Speed is the speed that should not
be exceeded except in smooth air and then only with caution.
Stalling Speed or the minimum steady flight
s~eed
at which the
airplane is controllable.
.stalling Speed or the minimum steady flight speed at which the
airplane is controllable in the landing configuration.
Best Angle-of-Climb Speed is the airspeed which delivers the
greatest gain of altitude in the shortest possible horizontal
distance.
Best Rate-of-Climb Speed is the airspeed which delivers the
greatest gain in altitude in the shortest possible time.
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ISSUED: JUNE 18, 1976 REPORT: VB·7~
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