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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Autogyro
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INFOTEXT
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1992-09-02
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796b
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21 lines
Heavier-than-air craft that supports itself
in the air with a rotary wing, or rotor.
The Spanish aviator Juan de la Cierva
designed the first successful autogiro 1923.
The autogiro's rotor provides only lift and
not propulsion; it has been superseded by
the helicopter, in which the rotor provides
both. The autogiro is propelled by an
orthodox propeller. The three- or
four-bladed rotor on an autogiro spins in a
horizontal plane on top of the craft, and is
not driven by the engine. The blades have
an aerofoil cross-section, as a plane's wings
do. When the autogiro moves forward, the
rotor starts to rotate by itself, a state
known as autorotation. When travelling fast
enough, the rotor develops enough lift from
its aerofoil blades to support the craft.
Subject by: Russell Webb