After looking at the designs, we reevaluated how exactly we would go about testing to see the differences in propulsion. Instead of testing two separate designs, we chose to modify Design A. Previously, the Pro/ENGINEER files had been in the wrong units and wrong magnitudes. These changes are displayed in the figure below.
We then sent these designs to the rapid-prototyping machine which fabricated the parts in hard plastic. In order to make sure that these propellers stayed on the motor shaft, a hole needed to be drilled in the center. This was done at the machine shop with the drill press and is depicted below.
The next step in testing submarine propulsion is to print out two more sets of propellers. The current propeller blades are shorter than the ones provided in the kit. Therefore, the next set will have the same blade length as the ones provided in the kit. Then the final set will be longer than those provided to us in the kit.
James Esser
Daniel Stenger
The next step in testing submarine propulsion is to print out two more sets of propellers. The current propeller blades are shorter than the ones provided in the kit. Therefore, the next set will have the same blade length as the ones provided in the kit. Then the final set will be longer than those provided to us in the kit.
James Esser
Daniel Stenger
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