156B Week 4

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

• • Wind tunnel skeleton built

    • Using as test body, will refabricate with thicker acrylic

  • Fan mount in progress

  • Testing for laminar flow imminent

Accomplishments from Previous Week

• • Finished attaching wind tunnel walls

  • Purchased one fan for PWM Testing

  • Purchase of mesh

  • Honeycomb sample en route through mail

    • if takes too long, will buy our own

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

• • Procure honeycomb (Melissa)

  • Purchase Fans (Emilio)

  • Purchase thicker acrylic (Harry)

  • Purchase remaining equipment required for laminar testing (Elliott)

    • smoke

  • Study and possibly purchase flow speed measurement tools (Emilio, Elliott, Melissa, Harry)

    • Pitot, ammeter, etc.

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

• • Approved minor changes in our overall tunnel design

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

• • In Person, 4/15/15

    • Consider multiple fans for faster response time (less inertia)

      • We are currently in the process of procuring 4 smaller fans and testing them

    • Beware that fans cannot create that much pressure

      • Putting 'foam' idea on hold

      • testing with honeycomb only

      • Considering using 2 honeycomb sections

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

• • Uneven flow across entire section

    • will soon be tested

  • Effects of fly-entrance chamber mesh on flow conditions

Resources or Information Required but not Available

• • n/a

Schedule

• • Construct test tunnel (almost done)

  • Test for laminar flow

  • Fabricate new tunnel with thicker acrylic

  • begin strategizing projection setup with Sponsor

Budget (list amount spent and amount remaining)

• • Misc. Items from Home Depot: Purchase Total $18.03

    • Fiberglass Screen/Mesh Material

    • Clear Sealant

    • Blue Painters Tape

  • Axial Fan: Purchase Total $10.17

  • REFUNDED $10.17

• Week's Total Spending: $18.03

• Budget Remaining: $4279.36

Progress on Report and Webpage

• • Report drafts completed up to last weeks deliverables

    • updated for edits