RASSOR Drum Bucket Challenge (Ver. JK)

grabcad

SUBMISSION DETAILS:Mass = 4.98 kgMax Teeth Engagement = 74 mmMax Drum Diameter = 450 mmMax Drum Length = 343 mm (Excess length for mounting)MAX CAPABLE VOLUME = 33.2 LSuggested Build Materials:-PEEK (Teeth Baffle Assem., Teeth Edge Ext., Washer Plate)-Aluminum 6061-T4 (M10 Plate Threads)-Titanium (M10 Hardware)-Polycarbonate (Drum Base/Lid)Design Summary:Focused on rapid manufacturability in lunar or space environments, this design prioritizes using aerospace-grade FDM materials that can withstand harsh thermal conditions and offer decent abrasion resistance. Aluminum and titanium hardware are used to balance strength with mass limitations while keeping the weight at 4.98 kg. Polycarbonate end pieces allow for easy observation of regolith collected during transport by RASSOR, ensuring about 85% capacity for 33.2 L to account for potential loss.Drill Down on Design Considerations/Future Work:-Plastics used are not designed to handle temperatures below -100 degrees C but will survive the highest lunar or space temperatures above 120 C.-To reduce mass, the design can be converted into an aluminum sheet metal assembly at a cost of increased carrying capacity.-Combining both teeth and baffle assembly from PEEK could simplify design and consolidation.-Weight reduction through component slimming remains a target, with alternate material selection also affecting this.-Polycarbonate's UV damage resistance will require additional protection in space.Design Strengths:Ease of Manufacturability.Designed Weaknesses:Mechanical Properties in sub -100 C conditions.