156B Week 2

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

• • About to order acrylic for walls and compartment dividers

    • need to confirm payment method with sponsor

  • After arrival of acrylic

    • machine walls

    • attach floor, one wall, and ceiling of tunnel

    • lasercamm compartment dividers

  • Spray projection coating on to walls before attaching

Accomplishments from Previous Week

• • Finalized design of wind tunnel

    • removable side wall

    • additional chamber for fan with honeycomb and mesh

  • Spoke to Ridout plastic and acquired quote estimate

  • Spoke with Tom Chalfant about cutting acrylic methods and final design feasibility

    • obtained honeycomb

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

• • Speak to Chris Cassidy and order Acrylic for walls and compartment dividers (Harry, Melissa)

    • Potentially get quotes for acrylic at specific sizes

  • CAD Modeling of projected hinge design (Emilio, Elliott)

  • CAD Modeling of Lasercamm items (Elliott)

  • Purchase Fan (Emilio)

  • Start assembly of tunnel exterior (Harry, Melissa)

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

• • Acrylic should be 1/8" to 1/4" for the projection stimulus

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

• • Meeting 4/1 in person:

    • Detaching the entire wall with clamps would be easier than using hinges

      • Both options in mind, will test both at assembly stage

        • Hinge design preferred for sponsor use (easy for one person)

    • Seal removable wall with rubber extrusions or use soft foam

    • Make sure final design doesn't have any shearing motion

      • Use a longer

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

Emailed to us on 4/1:

• • Entrance length effect

    • We will test entrance length effects and adjust the assembly accordingly if required

  • Non constant duct cross section (No context for this student comment)

  • Other stimulants other than visual stimulation

    • food or pheromones are not ideal because of remaining residue from previous test runs which can negatively affect future tests

  • use honeycomb diffuser (straws)

    • we intend to use some sort of honeycomb that may also duel as a mesh to keep the flies out of the fan

  • other materials besides acrylic

    • needs to be clear

    • acrylic matches other projects within the lab and also in compatible with our coating spray

    • glass is heavier and more fragile

  • how are we ensuring flow through the entire tunnel

    • the tunnel is sealed ensuring that air can only exit at the end of the tunnel

Risks and Areas of Concern

• Projection

  • • Will High Speed Projectors cover the entire surface?

    • If not, can a stronger projector be adjusted to reach higher speeds?

• • CO₂

    • valve required to switch airflow?

      • does the flow need to be 100% CO₂ in order to asphyxiate flies

Resources or Information Required but not Available

• • How to adjust a projector's color wheel to allow higher buffer rates (allow use of movie projector for fly stimulus projection)

Schedule

• • Order Acrylic

  • Week Following delivery of acrylic:

    • machine walls

    • attach floor, one wall, and ceiling of tunnel

    • lasercamm compartment dividers

  • Spray projection coating onto walls before attaching

Budget (list amount spent and amount remaining)

• • None Spent

Progress on Report and Webpage

• • Background section started