December 10, 2002 We Fling Foo 1 We Fling Foo Parabolic Food Aid Delivery System(PFADS) By Rob Berkeley Chris Giuffra University of the Pacific

December 10, 2002 We Fling Foo 2 Outline Introduction Project Objectives Preliminary Ideas Refinement Decision/Implementation Construction & Testing Results Improvements Conclusion Acknowledgments

December 10, 2002 We Fling Foo 3 Introduction To build a scale model of a PHADS that will carry a Food Aid Package (FAP). It will have to roll down a hill, hit a wall, and then launch a FAP into a village over a mountain.

December 10, 2002 We Fling Foo 4 Introduction Constraints –Weight –Size –Cost

December 10, 2002 We Fling Foo 5 Introduction Criteria –Accuracy –Weight –Consistence

December 10, 2002 We Fling Foo 6 Project Objectives Roll Down Ramp Throw a Food Aid Package over a 3.5’ gap and over a 6’2” wall and land on an X Do not exceed target point

December 10, 2002 We Fling Foo 7 Preliminary Design

December 10, 2002 We Fling Foo 8 Advantages –Simple structure –Easily adjustable –Low cost to build Disadvantages –Possibly heavy –Catapult arm breakable

December 10, 2002 We Fling Foo 9

December 10, 2002 We Fling Foo 10 Advantages –Potentially very accurate –Easy angle adjustment –More stability Disadvantages –Harder to build –More difficult to create release mechanism

December 10, 2002 We Fling Foo 11

December 10, 2002 We Fling Foo 12 Advantages –light weight –Reliable release mechanism –Accuracy Disadvantages –Strength –High center of gravity

December 10, 2002 We Fling Foo 13 Refinement

December 10, 2002 We Fling Foo 14

December 10, 2002 We Fling Foo 15 Refinement Box holder Catapult design Release mechanism Elastic band

December 10, 2002 We Fling Foo 16 Decision Design that worked best No wheels Weight on back Change angle of release

December 10, 2002 We Fling Foo 17 Decision

December 10, 2002 We Fling Foo 18 Results First and second time –Did not go over wall –Did not flip over into river –Released package Third time without wall –Went down ramp and released package very close to X.

December 10, 2002 We Fling Foo 19 Improvements Better angle adjustment Stronger design Lower center of gravity

December 10, 2002 We Fling Foo 20 Conclusion Overall it performed well even though it did not go high enough Operated in a satisfactory way Need a way to adjust angle more precisely

December 10, 2002 We Fling Foo 21 Acknowledgements Dana Kristel UOP Machine Shop