CESSNA
MODEL
2088 (675 SHP)
SAMPLE PROBLEM
(Continued)
SECTION 5
PERFORMANCE
TAKEOFF
The Takeoff Distance chart, Figure 5-9, should be consulted, keeping in
mind that the distances shown are based on the short field techniaue.
Conservative distances can be established by reading the chart at'the
next higher value of weight, altitude and temperature. For example, in
this particular sample problem, the takeoff distance information
presented for a weight of 8750 pounds, pressure altitude of 4000 feet
and a temperature of 20°C should be used and results in the following:
Ground roll: 1875 Feet
Total distance to clear a 50-foot obstacle: 3295 Feet
These distances are well within the available takeoff field length.
However, a correction for the effect of wind may be made based on
Note
2
of the takeoff chart. The correction for a 12 knot headwind is:
12 Knots
11 Knots
X
10%
=
11% Decrease
This results in the following distances, corrected for wind:
Ground roll, zero wind:
1875 Feet
Decrease in ground roll
(1 875 feet
X
11
%):
206 Feet
Corrected ground roll: 1669 Feet
Total distance to clear a
50-foot obstacle, zero wind:
Decrease in total distance
(3295 feet
X
11
%):
Corrected total distance
to clear a 50-foot obstacle:
3295 Feet
362 Feet
2933 Feet
The Engine Torque For Takeoff chart, Figure 5-8, should be consulted
for takeoff power setting. For the above ambient conditions, the power
setting is:
Takeoff torque: 1865 Ft-Lbs
U.S.
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