Cross-Country Sit Ski Progress Report Cody Barnett Betsy Camp Josh Metzler Robbie Quesada Mark Scheel Alex Triplett Academic Advisor: Dr. Hormoz Zareh Industry Advisor: Jennifer Armbruster Sponsor: PSU Inclusive Recreation

Introduction Provide cross-country sit ski to Inclusive Dept. of Campus Rec Must accommodate various – Body shapes – Injury types

Mission Statement The objectives of the PSU Sit Ski Team are to: Design and build a cross-country sit ski Accommodate varying user size, weight, and injury type Deliver to Inclusive Rec in June of 2012

Final PDS Seat back adjusts from 19” to 25” Seat back reclines from 90° to 120° Footrest adjustable Bottom of seat adjusts to 20° Restraints for T12 to C5 injuries Cost less than $1500

Overall Design Selection – Fundamental Design – Low-Risk Design – Improved Design Pros Adjustability Strapping points Manufacturing ease Cons Heavy Manufacturing time Pros Simple design Some adjustability Bucket seat Cons Expensive seat & parts Low adjustability Pros Simple design Robust frame Low-cost seat Cons Lack of adjustability Lack of strap points Expensive manufacturing Concept Selection

Final Design Types of engineering analysis leading to final design FEA Tip analysis Ergonomic analysis Weld analysis Tube bending analysis Tube buckling analysis

PDS Requirement Completion Seat back adjusts from 19” to 25”

PDS Requirement Completion Seat back reclines from 90° to 100°

PDS Requirement Completion Bottom of seat adjusts to 10°

PDS Requirement Completion Footrest adjustable

PDS Requirement Completion Restraints for T12 to C5 injuries

PDS Requirement Completion Cost less than $1500

Project Schedule Start DateFinish Date Design December 1April 5 Manufacturing April 2May 16 Testing May 17May 31 FinalDelivery June 8

Acknowledgements Keen – Restraints Head rest Seat Cushion Next Adventure – Discounted skis and bindings Treske Precision Machining – Donated labor Donated powder coat finish

Questions