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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
11
"On
the
other
hand,
if
we
are
thinking
merely
of
Speed,
then
a
small
Surface,
just
enough
to
lift
the
weight
off
the
ground,
will
be
best;
also
a
small
Angle
to
cut
the
Drift
down,
and
that,
of
course,
means
a
relatively
small
Camber.
"So
you
see
the
essentials
for
Climb
or
quick
ascent
and
for
Speed
are
diametrically
opposed.
Now
which
is
it
to
be?"
"Nothing
but
perfection
for
me,"
said
Efficiency.
"What
I
want
is
Maximum
Climb
and
Maximum
Speed
for
the
Power
the
Engine
produces."
And
each
Principle
fully
agreed
with
her
beautiful
sentiments,
but
work
together
they
would
not.
The
Aspect
Ratio
wanted
infinite
Span,
and
hang
the
Chord.
The
Angle
of
Incidence
would
have
two
Angles
and
two
Cambers
in
one,
which
was
manifestly
absurd;
the
Surface
insisted
upon
no
thickness
whatever,
and
would
not
hear
of
such
things
as
Spars
and
Ribs;
and
the
Thrust
objected
to
anything
at
all
likely
to
produce
Drift,
and
very
nearly
wiped
the
whole
thing
off
the
Blackboard.
There
was,
indeed,
the
makings
of
a
very
pretty
quarrel
when
the
Letter
arrived.
It
was
about
a
mile
long,
and
began
to
talk
at
once.
"I'm
from
the
Inventor,"
he
said,
and
hope
rose
in
the
heart
of
each
heated
Principle.
"It's
really
absurdly
simple.
All
the
Pilot
has
to
do
is
to
touch
a
button,
and
at
his
will,
VARY
the
area
of
the
Surface,
the
Angle
of
Incidence,
and
the
Camber!
And
there
you
are--Maximum
Climb
or
Maximum
Speed
as
required!
How
does
that
suit
you?"
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