The following lab, team member Max worked alone to collect wind tunnel data. The point of this data was to determine what amount of thrust would allow the propellers to be as energy efficient as possible. Max did not personally collect the data. Instead, it was provided to him and members from other groups by a UTA who had control of the propeller and wind tunnel. After returning to the team table with the data, Max employed Davin to perform calculations. The original data and Davin’s analysis can be seen below.
Wind Tunnel Data
| -0.1 | 154.8 | 0 | 0 |
| -0.07 | 155.1 | 778 | 5 |
| 0 | 156.1 | 1856 | 10 |
| 0.09 | 157.6 | 2814 | 15 |
| 0.19 | 159.7 | 3712 | 20 |
| 0.28 | 161.8 | 4431 | 25 |
| 0.39 | 164.8 | 5269 | 30 |
| 0.49 | 167.4 | 5928 | 35 |
| 0.59 | 170.9 | 6646 | 40 |
| 0.67 | 173.9 | 7305 | 45 |
| 0.78 | 178 | 8023 | 50 |
| 0.89 | 182.2 | 8682 | 55 |
| 0.99 | 186.5 | 9000 | 60 |
Davin’s Wind Tunnel Data Analysis
| Thrust Calibration (grams) | RPM | Power Input (Watts) | Power Output (Horsepower) | Power Output (Watts) | Propulsion Efficiency (%) | Advance Ratio |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0.1233 | 778 | -0.0259 | 2.91847E-06 | 0.002176304 | -8.402716454 | 0.046272 |
| 0.5343 | 1856 | 0 | 1.26467E-05 | 0.009430649 | 0 | 0.019397 |
| 1.1508 | 2814 | 0.0999 | 2.72391E-05 | 0.020312167 | 20.33249907 | 0.012793 |
| 2.0139 | 3712 | 0.2812 | 4.76684E-05 | 0.035546292 | 12.6409287 | 0.009698 |
| 2.877 | 4431 | 0.518 | 6.80976E-05 | 0.050780416 | 9.803169197 | 0.008125 |
| 4.11 | 5269 | 0.8658 | 9.72824E-05 | 0.072543452 | 8.378777091 | 0.006832 |
| 5.1786 | 5928 | 1.2691 | 0.000122576 | 0.09140475 | 7.202328389 | 0.006073 |
| 6.6171 | 6646 | 1.7464 | 0.000156625 | 0.116794958 | 6.687755257 | 0.005417 |
| 7.8501 | 7305 | 2.2311 | 0.000185809 | 0.138557993 | 6.210299557 | 0.004928 |
| 9.5352 | 8023 | 2.886 | 0.000225695 | 0.168300809 | 5.831628855 | 0.004487 |
| 11.2614 | 8682 | 3.6223 | 0.000266554 | 0.198769059 | 5.487371522 | 0.004147 |
| 13.0287 | 9000 | 4.3956 | 0.000308385 | 0.229962743 | 5.231657635 | 0.004 |