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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
152
=Wash=--The
disturbance
of
air
produced
by
the
flight
of
an
aeroplane.
=Wash-in=--An
increasing
angle
of
incidence
of
a
surface
towards
its
wing-tip.
[38]
=Wash-out=--A
decreasing
angle
of
incidence
of
a
surface
towards
its
wing-tip.
[39]
=Wing-tip=--The
right
or
left-hand
extremity
of
a
surface.
[40]
=Wire=--A
wire
is,
in
Aeronautics,
always
known
by
the
name
of
its
function.
=Wire,
Lift
or
Flying=--A
wire
opposed
to
the
direction
of
lift,
and
used
to
prevent
a
surface
from
collapsing
upward
during
flight.
[41]
=Wire,
Anti-lift
or
Landing=--A
wire
opposed
to
the
direction
of
gravity,
and
used
to
sustain
a
surface
when
it
is
at
rest.
[42]
=Wire,
Drift=--A
wire
opposed
to
the
direction
of
drift,
and
used
to
prevent
a
surface
from
collapsing
backwards
during
flight.
=Wire,
Anti-drift=--A
wire
opposed
to
the
tension
of
a
drift
wire,
and
used
to
prevent
such
tension
from
distorting
the
framework.
[44]
=Wire,
Incidence=--A
wire
running
from
the
top
of
an
interplane
strut
to
the
bottom
of
the
interplane
strut
in
front
of
or
behind
it.
It
maintains
the
"stagger"
and
assists
in
maintaining
the
angle
of
incidence.
Sometimes
termed
"stagger
wire."
[45]
=Wire,
Bracing=--Any
wire
holding
together
the
framework
of
any
part
of
an
aeroplane.
It
is
not,
however,
usually
applied
to
the
wires
described
above
unless
the
function
performed
includes
a
function
additional
to
those
described
above.
Thus,
a
lift
wire,
while
strictly
speaking
a
bracing
wire,
is
not
usually
described
as
one
unless
it
performs
the
additional
function
of
bracing
some
well-defined
part
such
as
the
undercarriage.
It
will
then
be
said
to
be
an
"undercarriage
bracing
lift
wire."
It
might,
perhaps,
be
acting
as
a
drift
wire
also,
in
which
case
it
will
then
be
described
as
an
"undercarriage
bracing
lift-drift
wire."
It
should
always
be
stated
whether
a
bracing
wire
is
(1)
top,
(2)
bottom,
(3)
cross,
or
(4)
side.
If
a
"side
bracing
wire,"
then
it
should
be
stated
whether
right-
or
left-hand.
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