Overview of Status of Analysis, Design, Fabrication, Tests, etc.
TESTING
1. Unspooling test (Mike and Katherine)
Verify whether the option to deploy buoy without special unspooling device
Test various ropes/lines to failure for estimations of average strength
2. Waterproofed shaft test (Alvin and Matthew)
Explore different ways to waterproof a motor shaft
Verify with a preliminary pool test
3. Biofouling test hand-off (Unassigned)
Give Bart some test articles to hang off the pier for an extended period of time
Determine the average adhesive strength of biofouling for some length of time and quantify risk of failure with current design
ACTION ITEMS
(Katherine)
Buy electronics
Obtain a go-pro
Order some permanent magnets
Teleconference with RF expert
Prepare a waterproofed motor test article
(Mike)
Order c-spray antifouling solution
(Alvin and Matthew)
Buy PVC, o-rings
Spec out motor requirements
DESIGN
Design Electronics circuit
Design internal housing
Design release mechanism and interface with buoy
Accomplishments from Previous Week
Presented Preliminary Design (All)
Received other underwater assemblies to provide examples of designs which function well in underwater applications (All)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Analyze results from testing in an effort to substantiate design decisions
Determine if an unspooling mechanism needs to be designed (Mike and Katherine)
Evaluate options to waterproof motor and determine the most cost-effective solution (Alvin and Matthew)
Design and test internal housing unit for electronics (Alvin and Matthew)
Quantify best design for release mechanism based on testing (Alvin and Matthew)
Design and assemble prototype electronics (Mike and Katherine)
Determine the feasibility of RF application (Katherine)
Quantify the best option for buoy (Mike)
Evaluate the ideal rope/line for application based on testing (Mike and Katherine)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Sponsor provided example materials and other projects related to current project and design
Underwater assembly with dual o-ring seals
Underwater assembly with pvc pipe float and retrieval line housing
Sub Sea Sonics Acoustic Burn Wire Release Unit
Fishing Fly Reel
Fishing Spin Reel
Agreed with T-Buoy design, pvc housing design, threaded release mechanism, and potential testing of RF communication
Suggested consulting published works on biofouling and barnacle strength for required strength calculations of system
Suggested testing different methods of reducing effect of biofouling on dynamic components of system
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Make sure that the rope is properly analyzed and selected
Consider trying to find an off-the-shelf solution for the buoy
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Sam Jafarian-- Suggested looking into permanent magnet grabber tool in machine shop (6-Apr-2015 during Preliminary Design Presentation)
Risks and Areas of Concern
Force/Torque available to system against sealing strength of biofouling
Unspooling of retrieval rope in a consistent manner
Resources or Information Required but not Available
The performance of C-spray antifouling solution for this application
The viability of RF transmission in an underwater setting
Schedule
UPCOMING MEETINGS/EVENTS
Meet on Monday at 1:00PM in lab space
Meet on Monday at 4:30PM with Dr. Tustaniwskyj
Meet on Friday from 10:00AM-12:00PM to test at Canyonview pool
Meet with Bart on Friday at 3:30PM at Starbucks
Budget (list amount spent and amount remaining)
$200 spent
$800 remaining
Progress on Report and Webpage
First Draft of Final Report uploaded to Documents page