Lunar TORCH

grabcad

Lunar TORCHPlease have a look at the attached PDF-file and/or follow YouTube link for video: https://youtu.be/RPjsD9r9nakNow that the competition is over, I added a few more links, hopefully making it easier to understand the principles.https://youtu.be/DLO9hRlaj1shttps://youtu.be/iDRmBiZfOXohttps://youtu.be/CxjNwaEVFHEhttps://he-ideas.weebly.com/ideas-and-stuff.htmlI chose to focus on: • Reliable construction• Low center of gravity• Stable through unfolding and use• Low placement of most motors• Simple construction• Easy handling – unfolding-adjustment-folding• Self-cleaningOne of the main concerns is avoiding the whole construction to overturn during use as the rover has a rather small contact area compared to the 10 square meter big mirror.To obtain that, several things were done:• A counter revolution of the mirror during unfolding• Controlled unfolding of the scaffold/stand• Individual controlled Support legs for levellingThe construction consist of seven mirrors carried by a central gear mechanism, an foldable stand/arm system and a base with four support legs. The base is mounted on a rover (not in the scope). A short description of each system follows:• 6 of the mirrors are basically alike, only the connection to the gear system differs slightly.• The 7. mirror is a slightly bigger to obtain the 10 square meter area and is equipped with solar cell surface.• The mirrors are sort of stacked and unfolded separately by a central gear mechanism.• The gear has 6 ‘output’, so each mirror is driven/rotated individually. By gearing them together, their movements are controlled during the entire unfolding and folding sequences.• The gear also have a mechanism that makes it possible to tilt each mirror and thereby change the focus.• The foldable arm system is made so the arms are geared together and thereby can be driven from the base• The base is mounted on a rover, and can be levelled by four independent legs. • The stand/arms system is pivoted on the base and the can be rotated 360 degrees. By turning the arm system the mirrors will be turned as well.Unfolding sequence:1. The rover is moved to the wanted location.2. The legs are turned out and each of them is lowered until the rover is in horizontal level in both directions (the rover might be lifted a bit off the ground).3. The stand/arm system is stretched up to its vertical position.4. The mirror gear system is activated, causing the mirrors to unfold while keep...