Cessna 172P - Page 78

SECTÍON
õ
PEN,FORMANCE
CESSNA.
MODEL
172P
With
this
factor includod, the
fuel estimdte
would
be calculated
as follows:
Using
a similar
procedure
for the distanoe
to climb
results
in 12 uautical
miIes.
The resultant cruise distance is:
Fuol to climb,
standard temperature
Increase due to non-standard
tomporature
(1.6
x
167o)
Corrected fuel to
olimb
Total distance
Climb distanco
Cruise distance
Engine start,
taxi,
and
takeoff
Climb
Cruise
R,eserve
Total fuel required
1.6
0.3
1.9
Gallons
320
-12
808 Nautioal Miles
1.1
1.9
22.2
ã.6
30.8
Gallons
ïtlith an expooted 10 knot headwind, the
ground
speod for
cruiso is
predicted
to
be:
112
-10
iõãKnots
Therefore, the tisre required for the cruise
portion
of
the
trip is:
308
Nautical Miles
_
.
i5¡Ail;-
=
3.0 Hours
The
fuel
required for cruise
is:
3.0 hours
*
7.4
gallons/hour
=
22.2 GaIIons
A
45-minute reserve requires:
4ó
ñ,
Z.q
galons/hour
=
5.6 Gallons
The
total estimated fuel
required is as follows:
Once
the flight is underway,
ground
speed checks will
provide
a more
accurate
basis for estimating the
time enroute and the corresponding
fuel
5-6
30 May 1980