The FAP Delivery System

Drew

Hayes&

Nathan

Hua

University of the Pacific

Stockton, CA

Team: Five-Finger Discount

Overview/Outline

• Background

• Criteria\Constraints\Objectives

• Preliminary Designs

• Refinement\Final Design

• Results

• Conclusion

• Acknowledgments

Background

• Employed to build a PFADS

• Launch FAP over wall

• Get FAP to Refugees

  

PYTHON-INFESTED JUNGLE BOUNDARY

4 in

4 ft 8 ft

STARTLINE

FAP TARGET SPOT6 ft 2 in

3.5 ft

10 ft 10 ft

7 ft

FAP TARGET SPOT

STARTLINE

1 ft

2 ft

FAP TARGET SPOT

TRACK 1

TRACK 2

Piranha Infested

River

3.5 ft10 ft

6' 2" Wall

10 ft

PYTHON-INFESTED JUNGLE BOUNDARY

Overview of Course

Constraints

• 18” x 18” x 18” dimensions

• 10 pound weight limit

• Self Launching

• FAP over the wall

• No parts go past the 4” barrier

Criteria

• Maximize Accuracy

• Minimize Weight

• Minimize Size

• Increase Figure of Merit

Objectives of the Project

• Group dynamics• Increase presentation skills• Following the design

process

Preliminary Designs

Roller blade wheels roll too quickly,

wood too heavy

Preliminary Designs

Not enough force with elasticBatteries are too heavy,

Nicrome wire wouldn’t support the resistance of the arm

Final Design

Materials:

•Bailing Wire

•Steel

•Hinges

•Pull Springs

•Concrete wheels

•PVC pipe

Refinement

• Added arm limiter• Used eyebolt and J shaped rod for push rod trigger• Took off wheels and added sliders• Added stabilizer bar to arm

Final PFADS

The Five-Finger Discount

Results

Weight

(lbs)

Length

(in.)

Height

(in.)

Width

(in.)

FOM

(points)

Rank

(#)

7 18.25 8.75 18.00 46.59 28

Results (cont.)

• Powerful enough to launch over the wall

• Reliable trigger

• Strong

• Dimensional Non-Compliance

• Excessively Powerful

Pros… Cons…

Improvements

• Make the dimensions fit the constraints

• Decrease power to throwing arm

• Shorten restrictor cable

• Design more effective sliders

Conclusions• We followed the design process and came up

with a design which was reliable and successfully fired the FAP over the wall consistently

• We optimized weight, but not dimensions to create a reliable PFADS

• Our PFADS was overpowered which could have been adjusted by using different springs

Acknowledgments

• Prof. Camilla Saviz

• Chris Eakland

• Home Depot

• Matt Hall

• Rayan Steck-Bayat