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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
141
=Cabre=--To
fly
or
glide
at
an
excessive
angle
of
incidence;
tail
down.
=Camber=--Curvature.
=Chord=--Usually
taken
to
be
a
straight
line
between
the
trailing
and
leading
edges
of
a
surface.
=Cell=--The
whole
of
the
lower
surface,
that
part
of
the
upper
surface
directly
over
it,
together
with
the
struts
and
wires
holding
them
together.
=Centre
(Line)
of
Pressure=--A
line
running
from
wing-tip
to
wing-tip,
and
through
which
all
the
air
forces
acting
upon
the
surface
may
be
said
to
act,
or
about
which
they
may
be
said
to
balance.
=Centre
(Line)
of
Pressure,
Resultant=--A
line
transverse
to
the
longitudinal
axis,
and
the
position
of
which
is
the
resultant
of
the
centres
of
pressure
of
two
or
more
surfaces.
=Centre
of
Gravity=--The
centre
of
weight.
=Cabane=--A
combination
of
two
pylons,
situated
over
the
fuselage,
and
from
which
the
anti-lift
wires
are
suspended.
[5]
=Cloche=--Literally
"bell."
Is
applied
to
the
bell-shaped
construction
which
forms
the
lower
part
of
the
pilot's
control
lever
in
a
Bleriot
monoplane,
and
to
which
the
control
cables
are
attached.
=Centrifugal
Force=--Every
body
which
moves
in
a
curved
path
is
urged
outwards
from
the
centre
of
the
curve
by
a
force
termed
"centrifugal."
=Control
Lever=--A
lever
by
means
of
which
the
controlling
surfaces
are
operated.
It
usually
operates
the
ailerons
and
elevator.
The
"joy-stick."
[6]
=Cavitation,
Propeller=--The
tendency
to
produce
a
cavity
in
the
air.
=Distance
Piece=--A
long,
thin
piece
of
wood
(sometimes
tape)
passing
through
and
attached
to
all
the
ribs
in
order
to
prevent
them
from
rolling
over
sideways.
[7]
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