Lunar laser reflectors. Preliminary study of laser reflector thermal control

Mathematics – Logic

Scientific paper

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Laser Range Finders, Lunar Retroreflectors, Temperature Control, Thermal Control Coatings, Aluminum Coatings, Glass, Lunar Environment, Lunar Rangefinding, Mirrors, Temperature Gradients

Scientific paper

The possibility was investigated of using passive thermal control to obtain a maximum diurnal temperature of 100 C and a minimum nocturnal temperature of -70 C on a hollow laser reflector deposited on the moon. The facets of the reflector are basically constituted by specular aluminized Sital. Two solutions were studied: one in which the internal faces are covered with a second surface mirror type coating, and another in which the internal faces are not coated, the aperture of the reflector being closed by a thin glass plate. It was concluded that both solutions were viable, the first one being preferable because it is technologically feasible and simpler than the other from a mechanical point of view.

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