156B Week 3

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Float design has changed based on materials found from PVC dealers

    • Instead of a size 8 to size 6 and a size 6 to size 4 reducer combination we found out that size 8 to size 4 reducers are available.

    • Possibility for pressure drag to develop at the reducer, but this will most likely be negligible in 0.51 m/s (1 kt) of current

  • Issue with PVC vendors

    • Most sell in 6.1 m (20 ft) segments. It was determined that buying 6.1 m (20 ft) from a local vendor was the equivalent of buying 3.0 m (10 ft) from McMaster(w/o shipping)

    • Spawar is purchasing the PVC pipe from Harrington Industrial supply. We are going to pick it up

    • The remaining items for the build will be purchased through local retailers

Accomplishments from Previous Week

• • Canyon View approved our experiment and reservations have been made on Friday at 10:30am to 11:30am

  • Aaron, Kendra, and Alan went to SIO to take a tour of the water channel on Monday 1/23/17

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Pick up PVC pipe from Harrington Industrial Supply (ALAN or HARRY)

  • Construct the bail (HARRY)

  • Construct the fins (TUNG)

  • Construct the float body (ALL)

  • FBD of float with final dimensions and weights (AARON)

  • Finalize testing procedure (Alan)

  • Determine potential sensor placements (Kendra)

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Float design looks great (1/20/17 in person)

  • Team needs to send Mark the quote from the vendor so SPAWAR can purchase the materials (1/20/17 in person)

    • Task has been completed

  • Research braided line terminations (1/20/17 in person)

    • Will be researched

  • When designing, keep in mind how the item will be installed and interacted with by divers (1/20/17 in person)

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 to use metric units when discussion dimensions

  • Use annotated pictures when discussing pictures

  • Make sure audience is able to follow along through the presentation and not only rely on the presenters

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • None

Risks and Areas of Concern

• • The purchasing pushed a bit behind schedule, but we should be back on schedule after completing the experiment this Friday 1/27/17

Resources or Information Required but not Available

• • None

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Spent $ 851.78 at Harrington Industrial Supply

  • Spent $ 41.43 at Rockler Woodworking

  • Remainder: $ 3106.79

Progress on Report and Webpage

• • Up to date