Rassor Bucket Drum Design improvement

grabcad

The Regolith Drum boasts 4 compact drums with 12 sturdy sheets of diverse shapes integrated within the drum. The space between these sheets consistently measures over 43mm, ensuring even the largest regolith particles can freely move within the drum. The maximum intended particle size for regolith is a mere 40mm. A fill ratio of 66% is envisioned. This design has been rigorously tested and proven to be effective. It can be produced using either 3D printing or spot welding techniques. Inner plates are strategically placed to extend the retention time of regolith, slowing its descent from the top to the bottom of the drum. Constructed from 1mm thick aluminum sheets, these drums also feature a 30mm diameter assembly hole (currently unused). The front plates can potentially be thinned down to less than 1mm due to the reinforcement provided by inner plates throughout the entire drum. Further simulation is necessary to optimize the placement of these internal sheets for even better performance. Additionally, the cutting edge of the scoops requires improvement in terms of shape and material. By increasing the density of built-in sheets (for instance, from 12 to 18), this design can be further refined. At any given time, a maximum of two scoops can engage with a width of up to 175mm. The empty bucket drum weighs 4.5kg and measures 450mm in outer diameter and 350mm in outer width. A total of eight scoops are present on the bucket drum. Each scoop has inner dimensions of 85.5×44 mm, allowing for a digging speed of approximately 15mm/s. The intended regolith volume captured within is 22 liters.