Energy Analysis
Preliminary Research and Development
The title of the graph is AEV prototype 1 power in watts as a function of time in seconds. From t = 0 to t = 5, power consumption increased linearly as one motor accelerated to full power. Full power consumption of one propeller averaged 13.5 watts, with noticeable spikes of 0.5 watts as the code transitioned states. Because Division D preformed a static test to measure power generated by the provided propellers, a Power vs Distance graph is irrelevant. To view the design for prototype 1, see design evolution.
Figure 1: Power vs. Time pR+D
Advanced Research and Development
In aR+D 1 and 2, Division D tested the power effectiveness of propellers vs. a pulley system. The codes used for these runs can be found in the coding archive. The yellow and purple curves are two runs of prototype one with reverse braking. The blue and orange are two runs of prototype two. The comparison is eye-opening for Division D. Motorized wheels complete the same code with less power percentage in less than half the time and used significantly less power. To view the design for prototype 2, see design evolution. The graphs below were collected.
Figure 2: Power vs. Time aR+D
Figure 3: Power vs. Distance aR+D
Performance Testing
After performance test 1 and 2, Division put there design through the final testing. The first full run and the scored full run is displayed below as Energy vs. Distance and Energy vs. Time. For final scoring, Division D used only 61 J and 45 s. The class average for these measurements was 167 J and 55 s. Group D’s measurements were significantly lower than the class average; they were also the lowest measurements recorded. The design used for this tests can be found in the design evolution page. The code used for these runs can be found in the coding archive.
Figure 4: Power vs. Distance First Full Run
Figure 5: Power vs. Time First Full Run
Figure 6: Power vs. Distance Scored PT3
Figure 7: Power vs. Time Scored PT3