GrabCAD 模型信息
Ultralightweight High capacity Drum · 模型 267837
This is a Carbon Fiber Ultra Light Weight Rassor collection Drum. Two drums are used per side with them positioned 180 degrees out of phase or in a counter rotating arrangement. This design is well suited to pickup and discharge in any gravity environment as those actions are gravity indepenendent. The safety Factor for the Design with a 200lb load on the digging teeth is 3.64. Maximum Displacement is .15mm which translates to a very strong and very stiff design that can handle tooth loadings in excess of 600lbs Details: OD: 450mm Overall Width: 359mm Cutting Width: 175 mm Cutting Edges: 2 Cut depth: aprox. 20mm Mass: 2 drums, 1.928kg (964g/drum) Capacity: (note includes 30mm allowance for central drive shaft) See Images for Min Max Volume configuration Internal Volume(maximum, 2 Drums, 180 degree phased at Top and bottom): 35.6liters(15.4L and 20.2L) Max individual Cartridge Fill Ratio: 99%, 20.94L (scoop at horizontal upside) Expected Maximum Fill Ratio: 96.4%, 20.2L at upright position Minimum Individual Cartridge Fill Ratio: 74%, 15.4L(scoop at bottom) Combined overall Fill ratio: 85% (combined 2 scoops at 180degree offsets(96.4%, 74%) Materials: Side Plates: GFRP Drum Shell: GFRP Scoop Head: GFRP Teeth: Titanium, Riveted Rivets: Aluminum Construction: Sides and Shell: Bonded Scoop and Shell: Bonded Scoop and Teeth: Riveted Design Features: Cartridge design: a) allows for quick swap out in the event of damage or obstruction. b) Reduces chance of total loss of function of a unified drum assembly due to damage or obstruction c) simplifies construction while maximizing material properties GFRP Construction: Removes need for internal structures to maximize storage and minimize potential build up and blockages Offset design: self regulating depth of cut Single cutting edges: Increase available shearing force Radiused cutting edge: Reduce Digging in, uses a shearing action to remove material rather than an breaking digging action reducing chance of grabbing. Regolith is removed in thin layers(See Attached DPM analysis) Manufacture: Minimum component count(6) Manufacture methods are common and well known Simple and quick assembly of components Additional Notes; Oversize scoop and tunnel vs cutting depth reduce chance of Blockage or jamming approximately 3 times larger than designed depth of cut, which is similar you what the current Rassor System has found most successful. Additionally reduced number of rotations for Discharge.
- 格式
- Rendering、Other、STEP / IGES、STL
- 分类
- Aerospace、Machine design、Robotics
- 标签
- nasadrumchallenge
- 数据更新
- 2026-09-20T21:19:43Z