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eliche

Eliche is the plural form of elica, a term used in Italian and in technical contexts to refer to a propeller or rotor blade. An elica functions to convert rotational power into thrust, enabling propulsion for aircraft, ships, and various mechanical systems. The concept is widely used in aviation, nautical engineering, and energy devices such as wind turbines, where rotating blades interact with the surrounding medium to generate motion or power.

In aviation, propellers are mounted on piston- and turbine-engined aircraft. They typically consist of a hub,

In nautical applications, propellers drive boats and ships. They likewise come in configurations with two, three,

Materials and manufacturing have evolved from wood to metals and, more recently, composites and high-strength alloys.

The term eliche highlights a broad family of propulsion components whose function is to translate rotational

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from
which
one
or
more
blades
extend.
The
blades
are
designed
as
airfoils
to
produce
lift
thrust
as
they
rotate.
Propellers
can
be
fixed-pitch,
with
a
constant
blade
angle,
or
controllable-pitch
(variable
pitch),
which
allows
adjustments
to
the
blade
angle
during
operation
to
optimize
efficiency
and
performance
at
different
speeds
and
loads.
or
four
blades,
and
may
be
fixed-pitch
or
controllable-pitch.
Matching
the
propeller
to
the
engine
or
motor
and
to
the
hull
is
essential
for
efficiency,
maneuverability,
and
vibration
control.
blade
design,
number
of
blades,
and
hub
geometry
influence
thrust,
efficiency,
noise,
and
structural
integrity.
Proper
balancing,
inspection
for
cracks
or
corrosion,
and
adherence
to
maintenance
schedules
are
important
for
safety
and
longevity.
energy
into
forward
movement
across
multiple
transport
and
energy
systems.