Parabolic Food Aid Delivery System Manjaneeq

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Parabolic Food Aid Delivery SystemManjaneeq

• Allison King
• Bader Asadallah
• University of the Pacific
• Stockton, CA
• 12/5/2002

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Outline

• Problem Definition
• Approach (Design Process)
• Results
• Improvements
• Conclusions
• Acknowledgements

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Introduction

• Mobile parabolic food aid delivery system
• Refugees surrounded by a piranha-infested river
• Mountainous jungles full of wild dangerous
  creatures
• Goal is to get food to refugees

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Constraints

• No bigger then 18x18x18
• 10 pounds
• Must sit behind a line 12 inches from the
  top of the ramp
• Must be self triggering
• Cant cost more the 20

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Criteria

• Minimum weight
• Minimum size
• Maximum accuracy
• Launch the FAP over the wall

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Project Objectives

• Build a food delivery system
• It has to catapult a food aid into the refugee
  camp
• Camp walls are 6 feet 2 inches
• It must launch a distance of 10 feet
• Has to launch a 7 ounce box

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Project Objectives (cont.)

• Group work
• Use the design process

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Launch Ramp and Target Area (Elevation View)
Figure1
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Launch Ramp and Target Area
Figure 2
2 ft
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Preliminary Ideas
Figure 3
Pros Cons Stable Not much power Accurate
trigger Short launch arm
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Preliminary Ideas
Figure 4
Pros Cons Long launch arm Might not have
enough power More power then others Stable
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Preliminary Ideas
Figure 5
Pros Cons Stable No trigger Good
power Hard to build
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Preliminary Ideas
Figure 6
Pros Cons Accurate Hard to build Stable No
trigger
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Decisions

• The only one that all parts logically worked
  
• Felt springs were more accurate
• Good trigger
• Connected to FAP longest
  

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Refinements

• Adding extra springs
  
• Add block of wood where trigger hits
  
• Extending arms that hold the FAP
• Bending angle of arms positioning

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Construction
Drilling holes
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Construction
First attempt
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Construction
Working on launch timing
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Testing
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Testing
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Final Mechanism
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Results
Figure 8
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Suggested Improvements

• Bungees
• Stronger metal rods
• Dont use springs
• Smaller wheels

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Conclusion

• Springs dont have enough force to make the PFAP
  go over a 6 ft. wall
• Springs can make the 10 ft. length accurately
  
• Manjaneeq was too long to fit on the ramp, behind
  the yellow line

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Acknowledgements

• Professor King
• Daniel Holt
• Salem Al-Othman
• Engr 5 web page

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Questions?