1. NASA Project July 8, 2005 Auburn University Cory Bryan Daniel Edwards Hasnain Megani Ryan Best

2. Design Problems Rickety frame Rickety frame Complicated method for changing the tank Complicated method for changing the tank Wear caused by unstable relationship between gear and pinion Wear caused by unstable relationship between gear and pinion Complicated angle adjustment Complicated angle adjustment Spooling device needs modifying Spooling device needs modifying

3. Previous Frame Design Small frame held with screws Small frame held with screws Adjustability made the frame weak and less rigid Adjustability made the frame weak and less rigid

4. Frame Design Changes Increased rigidity by changing table material to welded 3 inch square tubing Increased rigidity by changing table material to welded 3 inch square tubing Removed table angle adjustability Removed table angle adjustability

5. Previous Tank Changing Method Several parts had to be completely removed from the machine Several parts had to be completely removed from the machine All parts removed had to be precisely realigned by hand All parts removed had to be precisely realigned by hand

6. Simplified Tank Changing Our table design consist of two sections latched together Our table design consist of two sections latched together Second section is mounted on tracks to allow easy separation and connection Second section is mounted on tracks to allow easy separation and connection Design makes it possible for one person to change the tank Design makes it possible for one person to change the tank

7. Previous Gear Support Gear only supported by 16 casters Gear only supported by 16 casters Design allowed vertical and horizontal movement Design allowed vertical and horizontal movement Lack of support caused gear and pinion misalignment Lack of support caused gear and pinion misalignment

8. Gear and Pinion Support Continuous gear support Continuous gear support No vertical or horizontal gear movement No vertical or horizontal gear movement No need to realign or adjust supports No need to realign or adjust supports

9. Previous Angle Adjustment Complicated procedure Complicated procedure Many screws and parts to move Many screws and parts to move At least 3 people needed At least 3 people needed

10. Simplified Angle Adjustment Tank angle is adjustable instead of table angle Tank angle is adjustable instead of table angle Moving the lower tank support allows tank adjustment Moving the lower tank support allows tank adjustment

11. Cost Analysis

12. Summary New design is more rigid and stable New design is more rigid and stable Changing the tank can be done by one worker instead of three Changing the tank can be done by one worker instead of three Gear will be continuously supported, firmly in place horizontally and vertically Gear will be continuously supported, firmly in place horizontally and vertically Simplified angle adjustment Simplified angle adjustment

13. Summary OPEN CLOSED