As we we're going to test the first set of propellers that were printed in the diving pool, we encountered a drastic problem. The propeller was connected to the motor shaft through the use of a sleeve that slid onto the shaft. This sleeve held the propeller and was soldered to the motor shaft. However, the bond was obviously not strong enough since during the testing the port motor sleeve fell off of the shaft. We are working to correct this issue by carefully re-soldering the propeller sleeves onto the motor shaft along with another adhesive.
The two other propeller designs have also been constructed and sent to the rapid prototyping machine. The first set of propellers that were printed had a blade length of 10mm while the propellers provided in the kit had a length of 15mm. Therefore, to keep differences in blade lengths consistent, one model has a blade length of 15mm while the other has a length of 20mm. These are shown below in Figure A and Figure B, respectively.
The two other propeller designs have also been constructed and sent to the rapid prototyping machine. The first set of propellers that were printed had a blade length of 10mm while the propellers provided in the kit had a length of 15mm. Therefore, to keep differences in blade lengths consistent, one model has a blade length of 15mm while the other has a length of 20mm. These are shown below in Figure A and Figure B, respectively.
Figure A: 15mm blade length
Figure B: 20mm blade length
James Esser
Daniel Stenger
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