Procedure:
The team questioned what effect different size propellers and different orientation of propellers have on the AEV. This was tested by first writing a simple code. The code consisted the AEV moving forward 120 marks, stopping, and reversing to where it started. The code was kept the same for all trials to eliminate extraneous errors.
Configuration 1 and Configuration 3 use larger propellers; the only difference between the two configurations is the way the propellers are facing. Configuration 2 uses smaller propellers.
Configuration 1: Larger Propellers with Concave (shiny) Side Facing AEV
Configuration 2: Small Propellers with Concave (shiny) Side Facing AEV
Configuration 3: Large Propellers with Concave (shiny) Side Facing Outward
Configurations 1 and 3 were tested two times, and Configuration 2 was tested only once.
Configuration | Try Number | Energy Used |
1 | 1 | 105 J |
1 | 2 | 108 J |
2 | 1 | 172 J |
3 | 1 | 89 J |
3 | 2 | 79 J |
Larger Propellers Power vs Time
Smaller Propeller Power vs Time
Based on the graphs and energy used for each configuration, the team decided Configuration 3 for all tests moving forward. It proved to finish the performance test the fastest, and as a result used the least energy by far.