Cruise Performance Table - Cessna TR182 1979 Pilot Operating Handbook

SECTION
4
NORMAL PROCEDURES
CESSNA
MODELTR182
75% POWER 65% POWER 55% POWER
ALTITUDE KTAS NMPG
KTAS NMPG KTAS NMPG
5000 151 10.6 142 11.5 132
12.5
10,000 158 11.1 148 12.0
137 12.9
15,000 165 11.6 155
12.5
142
13.4
20,000 173 12.1 162 13.1 147
13.9
Standard Conditions
Zero Wind
Figure 4-3. Cruise Performance Table
The Cruise Performance Table, figure 4-3,illustrates the true airspeed
and nautical miles per gallon during cruise for various altitudes and
percent powers. This table should be used as a guide, along with the
available winds aloft information, to determine the most favorable alti-
tudes and power setting for a given trip. The selection of cruise altitude on
the basis of the most favorable wind conditions and the use of low power
settings are significant factors that should be considered on every trip to
reduce fuel consumption.
For reduced noise levels, it is desirable to select the lowest RPM in the
green arc range for a given percent power that will provide smooth engine
operation. The cowl flaps should be opened, if necessary, to maintain the
cylinder head temperature at approximately two-thirds of the normal
operating range (green arc).
Cruise performance data in this handbook and on the power computer
is based on a recommended lean mixture setting which is established by
reference to exhaust gas temperature (EGT) as shown on the Cessna
Economy Mixture Indicator. EGT is used for mixture leaning in cruising
flight at maximum recommended cruise power or less. To adjust the
mixture, lean to establish the peak EGT as a reference point and then
enrichen the mixture by a desired increment based on data in figure
4-4.
The mixture should be full rich at any power setting above maximum
recommended cruise power.
As noted in the table, operation at peak EGT provides best fuel
economy. This results in approximately 7% greater range than shown in
this handbook accompanied by approximately
4
knots decrease in speed.
When leaning the mixture under some conditions, engine roughness
may occur before peak EGT is reached. In this case, continue to lean until
4-18
1 October 1978