OPTIMUM
CRUISE PERFORMANCE
OXYGEN
DURATION
CHART
(48 CUBIC
FEET CAPACITY)
%BHP
ALTITUDE
TRUE
RANGE
AIRSPEED
(std.Tanks)
looo
-
75 6500
162
695
'
VW
16OO
e a
oos
70
8000 160 735
o
fg
o
14OO
65
10,000 158
785
1200
Figure
2-4.
LIJ
For a
given throttle
setting,
select the
lowest
engine
speed
in
the
green
are range
that
will give smooth engine operation.
(I)
LJ
SOO
Cowl flaps
should
be
adjusted
to
maintain the cylinder
head
tempera-
ture at
approximately
two thirds of the normal
operating (green
arc)
range
to assure
prolonged engine life.
600
To achieve
the
range figures
shown
in
Section
VI,
the mixture should
be
leaned
as follows: pull mixture control
out until
engine becomes
rough;
400
then
enrich mixture
slightly
from this point. Any
change
in altitude,
power,
or
carburetor heat will require
a
change in the lean mixture
setting.
200
Application
of full
carburetor heat
may enrichen
the
mixture
to
the
point
of
engine
roughness. To avoid this,
lean the
mixture
as
instructed
in
the preceding
paragraph.
O
OI
23456789
The
use of full carburetor heat is recommended during flight in very
OXYGEN DURATION
-
(HOURS)
heavy
rain to
avoid
the possibility
of engine stoppage due
to
excessive
water ingestion.
The
mixture
setting should be readjusted for smoothest
operation.
NOTE:
This chart is based on a
pilot with
an orange
color-coded
oxygen
line
fitting
and passengers with green
color-coded
line fittings.
STALLS.
The stall
characteristics are conventional and aural
warning
is
pro-
Figure
7-3.
2-10
7-7
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