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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
133
CHAPTER
V
MAINTENANCE
CLEANLINESS.--The
fabric
must
be
kept
clean
and
free
from
oil,
as
that
will
rot
it.
To
take
out
dirt
or
oily
patches,
try
acetone.
If
that
will
not
remedy
matters,
then
try
petrol,
but
use
it
sparingly,
as
otherwise
it
will
take
off
an
unnecessary
amount
of
dope.
If
that
will
not
remove
the
dirt,
then
hot
water
and
soap
will
do
so,
but,
in
that
case,
be
sure
to
use
soap
having
no
alkali
in
it,
as
otherwise
it
may
injure
the
fabric.
Use
the
water
sparingly,
or
it
may
get
inside
the
planes
and
rust
the
internal
bracing
wires,
or
cause
some
of
the
wooden
framework
to
swell.
The
wheels
of
the
undercarriage
have
a
way
of
throwing
up
mud
on
to
the
lower
surface.
This
should,
if
possible,
be
taken
off
while
wet.
It
should
never
be
scraped
off
when
dry,
as
that
may
injure
the
fabric.
If
dry,
then
it
should
be
moistened
before
being
removed.
Measures
should
be
taken
to
prevent
dirt
from
collecting
upon
any
part
of
the
aeroplane,
as,
otherwise,
excessive
skin-friction
will
be
produced
with
resultant
loss
of
flight
speed.
The
wires,
being
greasy,
collect
dirt
very
easily.
CONTROL
CABLES.--After
every
flight
the
rigger
should
pass
his
hand
over
the
control
cables
and
carefully
examine
them
near
pulleys.
Removal
of
grease
may
be
necessary
to
make
a
close
inspection
possible.
If
only
one
strand
is
broken
the
wire
should
be
replaced.
Do
not
forget
the
aileron
balance
wire
on
the
top
surface.
Marker
Marker
Fine marker
White-out
Fine white-out
Circle
Paint
Unmarker
Hand
Scalpel
Dice
Sieve
Purify
Undo
Redo
Start over
