Systems Level Design Review P15010: Arc Wheelchair Swing Maggie Bates –Team Leader Sean Kennelly – Design Lead Owen Breese – Team Facilitator Elizabeth Cutolo – Mechanical Engineer Maggie is doing this Open dialogue feel free to ask questions Maggie Bates, Sean Kennelly, Owen Breese, Elizabeth Cutolo

Agenda Project Background Systems Design Concept Development Project Statement Current Market Customer Needs/Engineering Specifications Highlights Updates Since Project Definition Review Systems Design House of Quality Functional Decomposition Concept Development Morphological Chart Pugh Chart Selected Concept System Architecture Feasibility Risk Assessment

Problem Statement, Deliverables, Current Market, Customer Needs and Engineering Specifications BACKGROUND

Problem Statement Our team has been tasked with developing and implementing a mechanism that allows individuals in wheelchairs to experience the sensory stimulation one gets from swinging without exiting their standard or powered wheelchairs for under $2,500 by May 2015.  Arc of Monroe Day Services program provides opportunities for individuals faced with intellectual and/or developmental disabilities. Learning opportunities occur through mental, emotion, and social stimulation. Primary Customer: Amanda Bement, Arc of Monroe Day Services Director

Current Market Owen

Current Market

Customer Requirements Owen

Customer Requirements Customer Rqmt. # Importance* Category Description CR2 9 Safety Minimizes distance of the chair off the ground during swinging for safety and size constraints. CR3 Supports the weight of the wheelchair and the occupant. CR15 Swing will remain at a safe speed throughout use. CR7 3 Versatility Arc facilities department has the ability to transport product from indoor areas to outdoor areas using doorways that range from 32" to 36". CR16 Budget Project total cost will not exceed $2,500

Engineering Requirements Sean

Engineering Requirements

Updates Since Last Review Stakeholder Communication Arc of Monroe Outreach Opened Dialogue with Director, Physical Therapist and Facilities Project Champion Dr. Dan Phillips from Biomedical Engineering Customer Requirement and Engineering Specifications Working towards solidifying with all members of the customer team Higher level understanding of vestibular simulation Safety Regulations What Arc will Accept as Product What resources are available for our use Impact on Budget Sean

House of Quality, Functional Decomposition SYSTEMS DESIGN

Functional Decomposition

Functional Decomposition

House of Quality Sean

Morphological Analysis, Pugh Chart, Selected Concepts, System Architecture, Feasibility Analysis, Risk Assessment CONCEPT DEVELOPMENT

Morphological Analysis/Pugh Chart

Concepts Sean

Pugh Chart

Each Concept was used as Datum. Below are the ranking averages. Pugh Chart Each Concept was used as Datum. Below are the ranking averages. Sean

Selected Concept Sean

System Architecture Sean

Force Required (Newtons) Feasibility Analysis Propulsion System   Equation Minimum Value Maximum Value Mass (lbs) N/A 650 850 Mass (Newtons) 1 lb = 4.44822 Newtons 2891.3 3781.0 Velocity (m/s) 0.5 1 Time (s) 2 7 Acceleration (m/s^2) a=v/t 0.0714 Force Required (Newtons) F=m*a 206.5 1890.5 Force Required (lbf) 46.43 425 Sean

Feasibility Analysis Braking System Sean

Feasibility Analysis Safety Considerations 1:16 maximum slope for ramp Objects may not protrude 60’’ wide space of an accessible route Designers must consider optimal layout for experience Turning space for wheelchair shall be located immediately adjacent to swing Sean

Risk Analysis Owen

Risk Analysis (Continued)

Project Planning, Subsystem Design Focuses SUBSYSTEM DESIGN PREP

Project Plan Maggie

Subsystem Design Phase Focuses Braking Disc brakes Propulsion Human powered Safety Frame Action item Sean

Questions? Final Questions?