Piper CHEROKEE ARCHER II Pilot Operating Handbook page 20

PIPER AIRCRA.F'T
C
ORPORATION
PA.28.181.
CTMROKEE ARCHER
TI
SECTION I
GENERAL
I.I9
SYMBOLS,
ABBREVIATIONS AND TERMINOLOGY
The lollowing detlnitions are
of
symbols, abbreviations
and terminology
used throughout the
handbook and tltose which may
be
of
added
operational significance to the pilot.
(a)
General Airspeed
Terminology and
Symbols
CAS
Calibrated
Ainpeed
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. IAS
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.
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'
Statling
Speed
or
the minimum steady
flight
speed
at which
the
airplane is
controllable.
Stalling Speed
or
the minimum steady
flight
speed
at which
the
airplane
is
controllable in the landing confiSuration'
Best
furgleof{limb speed
is the
airspeed
which deliven
the
greatest gain
of
altitude
in
the shortest possible horizontal
distance.
Best
Rateof{limb
Speed
is
the
airspeed
which delivers the
greatest gain
in altitude in
the shortest possibte
time'
'V4
vY
REPQBT: vB-7eo
l-5
KCAS
GS
IAS
KIAS
M
TAS
vru
vNs/MI{g
vNo
vs
vso
Va
IISIED:
JUI{E 18,
1976