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

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

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

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

Design One

Design Two

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

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

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

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

Project Plan 3D parts printed: 3-24-17 Designs developed in SolidWorks Printed and ready to be assembled Final AEV design assembled: 4-7-17 3D parts printed and attached to AEV Final code developed: 4-7-17 Test the AEV design to gain knowledge on braking time Final test verification: 4-14-17 AEV able to complete final task

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

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

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

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

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

Questions?