Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Waterproof testing of the pressure case O-ring seals was conducted by submerging the case at 25 psi for 24 hours. No moisture was detected in the pressure case after this period.
Assembly instructions and technical drawings are midway to completion.
Accomplishments from Previous Week
All parts of the report were rewritten except the Impact on Society section.
A first draft of the executive summary was written.
Pressure case and winch were assembled.
The winch was modified to mount within the drogue.
O-ring seals were tested.
Assembly instructions and technical drawings for the pressure case are complete.
The CAD models were updated to include the following design changes: notches were added to the ends of the pressure case; a hole and groove for tying the fishing line to the spool were cut; a length of PVC pipe was mounted to the top of the level wind; the winch was mounted to the drogue at the top ring via a 4.5" PVC pipe coupler.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Jebsen - Complete technical drawings of custom pressure case components.
Jebsen - Create an electrical schematic of the power and control system.
Jebsen - Wire the batteries with diodes and test with the motor running.
Jebsen - Proofread draft 2 of the report.
Matt - Complete technical drawings of custom level wind components.
Matt - Complete assembly instructions.
Matt - Rewrite Chapter 2 of the report draft.
Matt - Add bill of materials, technical drawings, parts listing, specification sheets, and assembly instructions to the report draft.
Matt - Create second draft of the webpage.
Thomas - Drill the hole for the motor shaft and the counterbore for the rotary shaft seal.
Thomas - Waterproof the sonar sensor.
Thomas - Mount the sonar sensor in the sensor endcap.
Merlin - Write control code for speed control of the prototype level wind and test.
Merlin - Calibrate the sonar sensor for underwater use.
Merlin - Rewrite the Executive Summary.
Merlin - Add risk reduction testing methods and results to the report draft.
Johnathan - Conduct a 24 hour waterproof test of the sensor endcap.
Johnathan - Create a rig for testing the rotary shaft seal with a scrap DC motor.
Johnathan - Conduct a 24 hour waterproof test of the rotary shaft seal.
Johnathan - Add O-ring testing methods and results to the report draft.
Johnathan - Add sensor waterproofing testing and rotary shaft seal testing methods and results to the report draft.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
none
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Professor Tustaniwskyj's and Assistant Patrick McGuire's critique of draft 1 of our project report was used to perform a rewrite of the report. An improved report draft is available under the Reports tab. It is titled Team 11-Corrections to Draft 1.
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
none
Risks and Areas of Concern
Waterproof testing of the sonar sensor is a risk. Should the test fail, the sensor could become unusable. Testing of the sensor will therefore occur before that of the rotary shaft seal.
Resources or Information Required but not Available
The weight of the surface float is not known.
Schedule
As soon as a successful test of both the rotary shaft seal and the sonar sensor is performed, the entire prototype will be ready for a proof of concept demonstration. The proof of concept demonstration is expected to occur next week.
Budget (list amount spent and amount remaining)
Amount spent: $649
Amount remaining: $1851
Progress on Report and Webpage
Corrections were made to draft 1 of the report.