1. Preliminary Design Report
Presented By Group H:
Marisa Asher, Travis Costa, Luke Morrical, and Julia Stowe

2. Overview This presentation will include..
Our AEV prototype and how it will work
A brief description of lab takeaways for the team’s design
What the next steps for this project will be
How we expect our current design to perform

3. Key Data: Wind Tunnel Lab
Main inspiration behind propeller design
Looked for Highest Efficiency and thrust
Could make AEV go the fastest for the least amount of power

6. Key Data: Evaluating our Design
6 Main Criteria for Evaluation
Design 1 was a good representation of proposed design
Not Exact, but is a good representation of what to expect
Performed Better than Base Design in All Categories

7. Design One

8. Design Two

9. Rapid Prototype Wing Design
Prototype for wings
To be 3D printed
Used for Design 2

10. Observations AEV Stability
The base AEV design was stable to some degree but at high speeds would fall off of the track.
Design 1 was only tested on a straight track but it seemed stable enough
Design 2 was also only tested on a straight track but it hit the green padding at the ends of the track and did not come off.
AEV Thrust
The different propellers required different motor speeds to operate at
Trying to operate the AEV at the same motor speed with different propellers could have unintended consequences

11. Experiences Key points to pay attention to when designing a prototype
Placement
Motors
Adding “wings” helped
Arduino
Battery
Must be places so as to balance out the arduino
Must not conflict with the space needed for the arm
Arm
Propellers
Larger Propellers Produce More Thrust
Design 1 compared to Design 2

12. Proposed Design Propellers in Pull Configuration
Inspired by wind tunnel lab data
Two 3-D Printed Parts
Custom Wings
Custom Arm
Simple Design
Very Stable, Fast, and Efficient

13. Project Plan 3D parts printed: 3-24-17 Designs developed in SolidWorks
Printed and ready to be assembled
Final AEV design assembled:
3D parts printed and attached to AEV
Final code developed:
Test the AEV design to gain knowledge on braking time
Final test verification:
AEV able to complete final task

14. Key Performance Objectives
Aerodynamic
We want a simple design that won’t create too much drag
Efficiency
We want our design to be as efficient as possible by using the pull configuration
Balance
We want to make sure our design is steady on the track
Four wheels hug the track to ensure stability
Cost
We plan to keep the cost of building this design to a minimum

15. Major Milestones AEV prototype drawing Lab 3 3D part development
In-class application
Rough draft of final code
Lab 6
keep the cost of building this design to a minimum

16. Items To Investigate Finalize 3D printing designs and have approved
Finish Building Proposed Design
Test and Evaluate Power Efficiency, Thrust, Stability
Develop Final Code
Test AEV with R2 Units

17. Expectations AEV Design Expectations Stability Low Cost
High Energy Efficiency
Propeller placement
Design 2 will be better than Design 1
Order of Precedence of Design Considerations
Cost
Energy Efficiency

18. Summary
Previous labs used to complete future data analysis and collection
Design adjustments continually made as the team sees fit

19. Questions?