156B Week 9

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

Fabrication of the wind tunnel has begun. Tian spoke to Professor Coimbra about thermal bridges and he also gave us information about other possible insulations that did not involve glass ceramic.

Accomplishments from Previous Week

• • Fan Mount

  • Wind tunnel duct and mesh holders

  • Copper plate / insulation stand

  • Updated report

  • Ordered remaining components (SSR, power measuring circuit, RTD circuit, new insulation)

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

• • Assemble wind tunnel (Tian)

  • Machine insulation (Tian)

  • Begin PCB board design (Anthony)

  • Machine plate mount assembly (Austin)

  • Design Labview temperature controller and purchase hardware components (Liz)

  • Research airflow speed calibration techniques (Austin)

  • Begin poster draft (Team)

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments

• • Nick has used PTFE Teflon before, and says it is machinable and creep is not a huge factor with the sizes we are using

Instructor Comments from Last Meeting and Actions Taken to Address these Comments

• • Dr. T suggested to change the time constant on the solid state relay which the team will adjust using LabView

  • Dr. T brought up the dimensions of the exhaust box and the team has redesigned it serve only as a housing for the electronics

Risks and Areas of Concern

• • Fan rpm and airflow speed calibration technique, perhaps with pitot tubes

Resources or Information Required but not Available

Schedule

• • Complete fabrication of wind tunnel tube

  • Complete LabVIEW

  • Check accuracy of model to theory

Budget

• • $870.97 spent, $1129.03 remaining

Progress on Report and Webpage

• • 2nd draft of report and webpage completed