Cessna 152 - Takeoff Distance Calculations

SECTION
5
PERFORMANCE
CRUISE
CONDITIONS
Total
distance
Pressure
altitude
Temperature
Expected
wind
enroute
LANDING
CONDITIONS
Field
pressure
altitude
Temperature
Field
length
TAKEOFF
CESSNA
MODEL
152
320
Nautical
Miles
5500
Feet
20°C (16°C
above
standard)
10
Knot
Headwind
2000
Feet
25°c
3000
Feet
The
takeoff
distance
chart,
figure
5-4,
should
be
consulted,
keeping
in
mind
that
the
distances
shown
are
based
on
the
short
field
technique.
Conservative
distances
can
be
established
by
reading
the
chart
at
the
next
higher
value
of
altitude
and
temperature.
For
example,
in
this
particular
sample
problem,
the
takeoff
distance
information
presented
for
a
pressure
altitude
of
2000
feet
and
a
temperature
of30°C
should
be
used
and
results
in
the
following:
Ground
roll
Total
distance
to
clear
a 50-foot
obstacle
980
Feet
1820
Feet
These
distances
are
well
within
the
available
takeoff
field
length.
Howev-
er,
a
correction
for
the
effect
of
wind
may
be
made
based
on
Note
3
of
the
takeoff
chart.
The
correction
for
a 12
knot
headwind
is:
12
Knots
9
Knots
x
10%
=
13%
Decrease
This
results
in
the
following
distances,
corrected
for
wind:
5-4
Ground
roll,
zero
wind
Decrease
in
ground
roll
(980
feet
x
13%)
Corrected
ground
roll
Total
distance
to
clear
a
50-foot
obstacle,
zero
wind
Decrease
in
total
distance
(1820
feet
X
13%)
Corrected
total
distance
to
clear
50-foot
obstacle
980
127
853Feet
1820
237
1583
Feet
1
July
1978