Si on vole activar un apparato de exploration in
un planeta como Marte, usar le sol pro producer
le energia requirite es problematic ma possibile.

David Wettergreen e su collegas in le Instituto
Robotic del Universitate Carnegie Mellon ha un
solution:  Hyperion, un machina de 2.042 metros
de longor que usa un computator pro mantener
perpendicular al sol un panello solar de quasi tres
metros de altitude pro generar le electricitate.

Le programmation de Hyperion cognoscera le topographia
local e anticipara le position cambiante del sol.
"Observante le ambiente circumferente," dice
Wettergreen, "un robot sur Marte calculara le
quantitate de energia necesse pro su travalio e
le location del umbras in le area ubi illo travalia,
determinante assi le optime movimento necesse pro
investigar le differente partes del terreno."

Un tal robot non es assatis rapide pro sequer le
movimentos del sol in le equator martian, ma illo
potera explorar facilemente le superficie fascinante
de Marte circum su polos.

In experimentos terrestre in le Arctico sur le insula
de Devon, ubi le lumine solar es perpetue durante
le estate, un robot Hyperion poteva sequer le
movimento
circular del sol e mantener su batterias cargate
durante un viage circular de 9 kilometros.

Wettergreen e su collegas tosto comenciara travalios
con le Laboratorio a Jecto de NASA (Jet Propulsion
Laboratory) in Pasadena, California, pro adaptar
le programmation de Hyperion pro sequer le sol in
le polos martian.

(Per Harleigh Kyson Jr., publicate in "Panorama",
novembre-decembre 2003, Anno 16, Numero 6)

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If you want to power a rover to explore Mars, using
the sun to produce the needed energy is hard to
do but possible.

David Wettergreen and his colleagues in the Robotics
Institute of Carnegie Mellon University have a
solution:  Hyperion, a machine 2.2 yards long that
uses a computer to maintain perpendicular to the
sun a solar panel about three yards high that will
generate the needed electricity.

The programming for Hyperian will be aware of the
local topography and will anticipate the changing
position of the sun.  "Observing the surrounding
environment," says Wettergreen, "a rover on Mars
will calculate the amount of energy needed for its
work and the location of shadows in the area where
it works, thus determining the best movements to
make while investigating the different parts of
the terrain."

Such a rover is not fast enough to follow the
movements
of the sun at the Martian equator, but it could
easily explore the fascinating surface of Mars around
its poles.

In land experiments in the Arctic on Devon Island,
where the sun shines all the time during the summer,
a Hyperion rover was able to follow the circular
movement of the sun and keep its batteries charged
during a circular trip of about five and a half
miles.

Wettergreen and his colleagues will soon be starting
work with the Jet Propulsion Laboratory in Pasadena,
California, to adapt Hyperion's programming to follow
the sun at the Martian poles.

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