Raytheon Beech Baron E55 - Page 271

Raytheon
Aircraft
SEECH BARON
55
AND
58
SHOP
MANUAL
e.
Add small
quantities
of
lead shot
to
the
cup
until the
aileron
balances
with
the chord
line
level.
Check
this
by
holding
the
spirit
level
aligned
with the
marked
chord
line.
f.
The distance D
must
be
perpendicular
to
the
hinge
line.
Measure
D
from
the
hinge
line
to
the
suspension
point
of the
cup.
g.
Remove
the
cup,
contents,
and
string,
then
weigh
them.
NOTE
Since
any
weighing
error
is
magnified
by
the
distance
D,
weighing
is
most
important
and
must
be
done
carefully
on
scales
that
are
certified
for
accuracy.
h.
Calculate
the
static
balance
as
follows:
1.
The
weight
of
the
cup
and
contents
is
designated
by
W.
2.
The
over-
or
underbalance
moment
is
designated by
M.
3.
M=WXD
4.
The
following
is
a
typical
example
of
a
balancing
calculation:
Assume
the aileron
is
overbalanced
(nose-
heavy)
and
the
paper
cup
was
suspended
from the
trailing
edge.
Assume
that the aileron balances
with
the chord
line
level
at
W
0.150
pound
and
D=
10.0
inches,
then.
M
0.150
X
10.0
M
1.50
inch-pounds.
The
product
of W
X
D.
In this
instance,
M is
within
the
required
static
balance
range
and
is
therefore
acceptable.
The
painted
aileron
assembly
must
be
nose-heavy
by
0.2
to
1.5
inch-pounds.
If
the static
balance
does
not
com-
ply, pig
lead
weight
may
be
added
or
removed
to
obtain
static
overbalance,
as
illustrated
in
Figure
4-25.
ELEVATOR
BALANCING THE
ELEVATOR
FIGURE
4-26
When
the elevator control
surface
is
being
repainted,
suspend
it
by
the
trailing edge
so
that
excess
paint
will
drain
toward the
leading edge.
After
any
modifications,
repairs,
or
repainting,
the
finished surface must
be
check
balanced
to
ensure
that
its
static
moment
about
the
hinge
line is
within
the
manufacturers
prescribed
limits.
The
complete
el-
evator
assembly,
painted
or
unpainted, including
the control
arm
and the
tab control
rod
must not
be
tail-heavy
over
the maximum
moment
noted
as
follows:
NOTE
A
tail-heavy
surface
exhibits
static
underbalance.
A
nose-heavy
surface exhibits
static
overbalance.
a.
22.6
inch-pounds
on
TO-1
through
TC-546
equipped
with
original
skin
or
authorized
spare
replacement
beaded
skin.
b.
18.0
inch-pounds
on
TC-1
through
TC-546
equipped
with
authorized
spare
replacement
smooth
skin
eleva-
tor(s).
E16
4-63