nasa drum challenge 1

grabcad

I have uploaded my entry for the NASA Drum Challenge.I tried to make this assembly as simple as possible, using components that are easily fabricated. The assembly process for the drum replicates current vessel designs. The drum heads and baffles are flanged for added strength. Once the drum/vessel is assembled, the buckets can be welded to the exterior. This is a welded assembly and can be easily repaired if cracks, deformation or wear develops. As the drum rotates and makes contact with the soil, it scoops the material up and it falls into the drum. The only way to remove all of the material, is to rotate the drum in the opposite direction. I found that this assembly currently has a 61% capacity by doing a simple analysis.To keep the inlet "free from obstruction", I would add a rock screen at the inlet of the scoop that would limit the size of the material that enters the inlet.Hope you enjoy.