Results Lab 02
In the second lab, the team used the wind tunnels in class to compare the two different propeller types along with their thrust orientation. Looking at the data gathered from the wind turbine the team decided that the 3030 propeller would be best for the AEV when running at the optimal power setting of 25%. This propeller was chosen because it had the greater thrust and efficiency compared to the 2510 propeller. In graph 1, the puller orientation for the propeller has greater thrust for both types of propellers but in graph 2 it is shown at a lower advance ratio the pusher orientation has a greater efficiency. The group will have to weigh the advantages and disadvantages of each before deciding on an orientation.
Looking forward to creating preliminary code for the scenario the team now knows that power levels don’t need to be as high as was originally expected. Also the distance the AEV coasts after the engines are cut should be accounted for so that extra power doesn’t need to be used when reversing the direction of airflow to stop the cart at the gate. A warning in the coding section of the lab manual stating not to set the power level over a certain limit would be helpful in avoiding future crashes into the gate or other sections of the track.
Graph 1
Graph 2