ISRU Collimated passive nonelectric, geometric self-tracking collector with few/no moving parts

grabcad

A static, geometric self-tracking and non-electric Sun collector. This model is designed for the polar solar rotation path at the Shackleton crater (described in Stoica et al), in which the altitude of the sun appears to only rise at most 2 degrees above the horizon, staying within a 3 degree elevation band along the azimuth, with only a slight +/- 1.5o elevation difference between the summer and winter solstices. Key advantages Passive geometric self-tracking heliostat for 100% non-electric sun tracking, able to be raised on a pole or suspended, providing a constant and fixed position ~12kw spotlight of concentrated, collimated light on the moon for use at the polar crater.-No solar tracking hardware or software needed for the collector itself-No electricity, battery, or electrical wiring required to function-No sensors or rotation needed-No moving parts (beyond deployment)-Highly reliable, passive, and extremely lightweight, for decades of useCreates a constant, concentrated, collimated light beam coming down at a 90o angle, always at a fixed location directly below the collector, regardless of the sun's position.This light is then easily directed around the crater from the rim, and can be further aimed from within using secondary reflectors. These collectors can be packed flat, using passive gravity to deploy and keep vertically centered, or mounted on a pole. Once aligned to the 0 and 180 points on the azimuth, they do not require adjustment. The great advantage is the passive condensing and collimation makes secondary aiming drastically simplified, with no need for complex tracking software and much reduced movement and battery usage. The primary reflecting mirrors could even be stationary, where the rover is not required to constantly attend to the aiming, but only return to the collector when it is desired to change the target. The suspension method allows the rover to control the collimated beam over a crater on a wire, using a simple passive pulley system.Collimated light is ideal for traversing long distances without losing power. Complete description in the PDF. The 2 minute demonstration video on youtube also shows the geometry and reflection angles that form the basis of the passive non-tracking mechanics. Thank you. The CAD file is in object OBJ and MTL format, attached.