1. 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

2. 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

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

4. 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

5. Current Market
Owen

6. Current Market

7. Customer Requirements
Owen

8. 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

9. Engineering Requirements
Sean

10. Engineering Requirements

11. 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

12. House of Quality, Functional Decomposition
SYSTEMS DESIGN

13. Functional Decomposition

14. Functional Decomposition

15. House of Quality
Sean

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

17. Morphological Analysis/Pugh Chart

18. Concepts
Sean

19. Pugh Chart

20. 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

21. Selected Concept
Sean

22. System Architecture
Sean

23. Force Required (Newtons)
Feasibility Analysis
Propulsion System
Equation
Minimum Value
Maximum Value
Mass (lbs)
N/A
650
850
Mass (Newtons)
1 lb = 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

24. Feasibility Analysis
Braking System
Sean

25. 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

26. Risk Analysis
Owen

27. Risk Analysis (Continued)

28. Project Planning, Subsystem Design Focuses
SUBSYSTEM DESIGN PREP

29. Project Plan
Maggie

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

31. Questions?
Final Questions?