156B Week 3

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

• • Acrylic for tunnel has been ordered and received

• Glueing of tunnel walls begun

  • Fan acquired

    • begin fan analysis, possibly purchase better fan

Accomplishments from Previous Week

• • Acrylic purchased

  • Assembly of tunnel started

  • Fan acquired from machine shop reserves

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

• • Airflow Chamber design (Elliott, Emilio, Harry, Melissa)

  • Airflow Chamber parts purchase (Harry, Melissa)

  • Possible removal of compartment dividers, however if not:

    • Compartment Dividers Material Purchase (Harry, Melissa)

    • Compartment Dividers/other CAD Modeling (Elliott, Emilio)

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

IN PERSON (4/8)

• • Increase size of tunnel to 1.5m x .3m x .3m

    • Purchased 1.5m x.3m pieces of acrylic for walls

  • Consider funneling entrance for laminar flow

    • currently studying and considering designs for this airflow chamber

  • Consider not making compartments, maybe just grooves along floor

    • focus on tunnel and airflow chamber first, and test before using compartments

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

4/8 in person after design proposal presentation

• • Acquire fruit flies and test their reactions to CO2

  • If needed Tom can help polish and cut acrylic

    • the acrylic was precut and gluing of the box is being assisted by Tom

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

Via Design proposal comments 4/8/15

• • Instead of square tube with circle cutouts, why not circle tube

    • machining feasibility, also compartmentalization

  • Increase entrance length so there is a longer portion with developing flow (more uniform profile)

  • What will be done about flies that just sit at the entrance?

Risks and Areas of Concern

• • Airflow Chamber

    • design

    • machining

  • CO₂ entry

    • effects on flies, speed of chamber flooding

Resources or Information Required but not Available

Schedule

• • Consider spraying projection goo onto acrylic (outside or inside)

  • Assemble tunnel

    • Construct ceiling latch

  • Begin purchasing material for airflow chamber

Budget (list amount spent and amount remaining)

• • 1/8 in. Thick Acrylic Sheets: Purchase Total $202.61

    • 4 Sheets .30635m x 1.5m

    • 4 Sheets .3m x 1.5m

• Week's Total Spending: $202.61

• Budget Remaining: $4297.39

Progress on Report and Webpage

• • Finished drafts that were due Friday 4/10