Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Started fabrication of mockup motor brackets out of aluminum sheet.
New motor replacement decision made (large motor option), incorporated into master CAD file
Group is waiting for parts to arrive for testing
Accomplishments from Previous Week
Found a geared flat DC motor. Would require only 5:1 gear ratio, which is a huge space saver
Talked to Tom: machining ball screw and top plates are both plausible
Acquired hydrophone from Scripps for testing
McMaster Carr parts ordered
Matlab script calculating number of lead screw revolutions per deployment: needs to be lubricated about every 1000 deployments.
Snow Camm used Ni-MH batteries, similar to current batteries.
Designed basic motor mounts in SW
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Do basic hydrophone testing to ensure it works properly. (Hannah) Then will test it just picking up acoustic sound from noise and then coupled to motor so picks up both acoustic noise and mechanical vibration. Then will repeat tests underwater. (Everyone)
Master CAD file, with all design configurations (Myles) - done until brackets designed
Take a team photo!!
Determine mounting style for gear; must be isolated together with the motor to ensure the gears stay engaged (Hurby)
Redimension aluminum sheet brackets to compensate for bend radius.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Sponsor wanted parts ordered for testing. All parts are either ordered, or waiting on written quote from company
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
(4/17/13, in person) Dr. T suggested McMaster Carr vibration damping sandwich mounts in order to isolate the motor/gears
(4/17/13, in person) Dr. T suggested acquiring microphone, contact Isaiah or Nick Busan
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Responsiveness of motor & gear companies; it's slowing down our whole process as we have to wait for quotes from them.
Volume concerns: solidworks is a great model but we won't know if if fits until we get our hands on things
Resources or Information Required but not Available
None
Schedule
Upcoming milestone: receive parts, start testing noise from motors/gears, machine top plates
Update Gantt chart.
Gear analysis and selection for specific motors.
Budget (list amount spent and amount remaining)
Spent: $359.26
Remaining: $2640.74
Pending order from Micromo
Progress on Report and Webpage