1. Structures and Thermal Locomotion Phase
Caitlyn McKay
Structures and Thermal
Locomotion Phase 1

2. Mass Total Mass of Rover = 29.1259 kg
Component
Mass in Kg
Solar Panels
2.5000
Gearhead (x4)
0.0075
Battery
0.3000
Cooler
Antenna
0.0800
Aluminum Body
2.3000
Transmitter
0.4200
Space Blanket-Teflon
0.7000
CPU
1.7000
Space Blanket-Kapton
0.8200
Camera
3.1200
Wheel (x4)
 1.2207
Motor (x4)
0.0230
Power (Extra)
1.0000
Mounts (x8)
Total Mass of Rover = kg
Dimensions of Rover = m x .497 m x .456 m 2
Caitlyn McKay
Structures and Thermal

3. Stress of Rover on Motor Shaft
Stage
Maximum Mass w/o
Further Support
Earth
10.2kg
Launch
1.3 kg
Landing
1.0kg
Moon
61.4 kg 3
Caitlyn McKay
Structures and Thermal

4. Stress of Rover on Shaft4
Caitlyn McKay
Structures and Thermal

5. Stress of Rover on Shaft
Maximum mass for the shaft of .01 m diameter while on the moon:
61.4 kg 5
Caitlyn McKay
Structures and Thermal

6. Structures and Thermal
Diameter of Shaft Needed to Support Rover on Earth
Assumption: gravitational force= m/s^2 6
Caitlyn McKay
Structures and Thermal

7. Structures and Thermal
Diameter of Shaft Needed to Support Rover during Launch
Assumption: gravitational force = m/s^2
gravitational force = 7.5 7
Caitlyn McKay
Structures and Thermal

8. Structures and Thermal
Diameter of Shaft Needed to Support Rover during Soft Landing
Assumption: gravitational force = m/s^2
gravitational force = 10 8
Caitlyn McKay
Structures and Thermal

9. Structures and Thermal
Diameter of Shaft Needed to Support Rover on Moon
Assumption: gravitational force= /6 m/s^2 9
Caitlyn McKay
Structures and Thermal

10. Buckling of Aluminum Body
Buckling Stress: 82,300 kg/m^2 10
Caitlyn McKay
Structures and Thermal

11. Structures and Thermal
Energy Usage
Component
Energy
Solar Panels
35 Wh
Gearhead
N/A
Battery
40 Wh
Cooler
20.00 W
Antenna
0.20 W
Aluminum Body
Transmitter
6.25 W
Space Blanket-Teflon
CPU
5.00 W
Space Blanket-Kapton
Camera
18.00 W
Wheels
Motor
5.40 W
Power (Extra)
Mount 11
Caitlyn McKay
Structures and Thermal

12. Operating Temperatures
Component
Operating Temp in K
Solar Panels
N/A
Gearhead
398.15
Battery
Cooler
Antenna
Aluminum Body
Transmitter
Space Blanket-Teflon
CPU
Space Blanket-Kapton
Camera
Wheels
Motor
Power (Extra)
Mount 12
Caitlyn McKay
Structures and Thermal

13. Structures and Thermal
References:
2008. CES EduPack2008. Citrix Client. Purdue University, West Lafayette, IN. Grandt, Alten F. Fundamentals of Structural Integrity. Hoboken, NJ: John Wiley & Sons, Inc., 2004. 13
Caitlyn McKay
Structures and Thermal