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165
The Aeroplane Speaks. Fifth Edition
·
H. Barber
3
CONTENTS
PROLOGUE
PAGE
PART
I.--THE
ELEMENTARY
PRINCIPLES
AIR
THEIR
GRIEVANCES
1
II.--THE
PRINCIPLES,
HAVING
SETTLED
THEIR
DIFFERENCES,
FINISH
THE
JOB
15
III.--THE
GREAT
TEST
27
IV.--CROSS
COUNTRY
38
CHAPTER
I.--FLIGHT
55
II.--STABILITY
AND
CONTROL
70
III.--RIGGING
90
IV.--PROPELLERS
115
V.--MAINTENANCE
126
TYPES
OF
AEROPLANES
130
GLOSSARY
133
THE
AEROPLANE
SPEAKS
PROLOGUE
PART
I
THE
ELEMENTARY
PRINCIPLES
AIR
THEIR
GRIEVANCES
The
Lecture
Hall
at
the
Royal
Flying
Corps
School
for
Officers
was
deserted.
The
pupils
had
dispersed,
and
the
Officer
Instructor,
more
fagged
than
any
pupil,
was
out
on
the
aerodrome
watching
the
test
of
a
new
machine.
Deserted,
did
I
say?
But
not
so.
The
lecture
that
day
had
been
upon
the
Elementary
Principles
of
Flight,
and
they
lingered
yet.
Upon
the
Blackboard
was
an
illustration
thus:
"I
am
the
side
view
of
a
Surface,"
it
said,
mimicking
the
tones
of
the
lecturer.
"Flight
is
secured
by
driving
me
through
the
air
at
an
angle
inclined
to
the
direction
of
motion."
"Quite
right,"
said
the
Angle.
"That's
me,
and
I'm
the
famous
Angle
of
Incidence."
"And,"
continued
the
Surface,
"my
action
is
to
deflect
the
air
downwards,
and
also,
by
fleeing
from
the
air
behind,
to
create
a
semi-vacuum
or
rarefied
area
over
most
of
the
top
of
my
surface."
"This
is
where
I
come
in,"
a
thick,
gruff
voice
was
heard,
and
went
on:
"I'm
the
Reaction.
You
can't
have
action
without
me.
I'm
a
very
considerable
force,
and
my
direction
is
at
right-angles
to
you,"
and
he
looked
heavily
at
the
Surface.
"Like
this,"
said
he,
picking
up
the
chalk
with
his
Lift,
and
drifting
to
the
Blackboard.
Marker
Marker
Fine marker
White-out
Fine white-out
Circle
Paint
Unmarker
Hand
Scalpel
Dice
Sieve
Purify
Undo
Redo
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