Cessna TURBO CENTURION T210M 1978 Pilot Operating Handbook page 79

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CESSNA
MODEL T210M
CRUISE
SECTION 5
PERFORMANCE
The cruising altitude should be selected based on a consideration of
trip length, winds aloft, and the airplane's performance. A cruising
altitude and the expected wind enroute have been given for this sample
problem. However, the power setting selection for cruise must be deter-
mined based on several considerations. These include the cruise perfor-
mance characteristics presented in figure 5-7, the range profile chart
presented in figure 5-8, and the endurance profile chart presented in figure
5-9.
The relationship between power and range is illustrated by the range
profile chart. Considerable fuel savings and longer range result when
lower power settings are used.
,,..---..,.. _ The range profile chart indicates that use of 70% power at 11,500 feet
yields a predicted range of 856 nautical miles with no wind. The endurance
profile chart shows a corresponding 5 hours. Using this information, the
estimated distance can be determined for the expected 10 knot headwind at
11,500 feet as follows:
Range, zero wind
Decrease in range due to wind
(5 hours
x
10 knot headwind)
Corrected range
856
50
806 Nautical Miles
This indicates that the trip can be made without a fuel stc,p using
approximately 70% power.
The cruise performance chart for 12,000 feet pressure altitude is
entered using 20°C above standard temperature. These values most nearly
correspond to the planned altitude and expected temperature conditions.
The power setting chosen is 2300 RPM and 30 inches of manifold pressure
which results in the following:
Power
True airspeed
Cruise fuel flow
70%
177 Knots
91 PPH
The power computer may be used to determine power and fuel consump-
tion more accurately during the flight.
FUEL REQUIRED
The total fuel requirement for the flight may be estimated using the
performance information in figures 5-6 and 5-7. For this sample problem,
the time, fuel, and distance to climb may be determined from figure 5-6 for a
5-5