156A Week 9

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

• • Basic 2D Heat Transfer Model With Relevent Equations Made for Simulation

Accomplishments from Previous Week

• • Basic 2D Heat Transfer Model Completed With Relevent Equations 

  • Initial list of lab needs completed

  • Risk Reduction Decided. Solidworks will be used

  • Discussion with Tom for use of heat furnace for model experimentation

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

• • Design a model for experimentation in the furnace

  • Have working simulation and simulate parameters in solidworks or matlab in 1D heat transfer.

  • Use simulation to brainstorm solutions to problem so they can be tested later and to order materials

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

• • Sponsor suggested two different adhesives: (FM300-2M, 0.0086 inch) and (EA9658, 0.0115 inch). Sponsor Recommends EA9658 for its resistance of up to 350 Farenheit. Recomends new bonding methods or adhesives.

    • TO BE ADDRESSED: Research cost effective adhesives or bonding methods after simulating parameters to constrain the demands of the adhesives.

  • Sponsor suggested neglecting convective heat transfer from the holes in the perforated skin. Perforated skin is 4-5% POA.

    • Assumed simple conductivity with the 95% of the area.

  • Sponsor suggested we assume the outside air to have a heat transfer coefficient of 40 Btu/hr·ft2·°F

    • So we did.

  • Sponsor suggested to stick with a simple 2D or 1D heat transfer problem with appropriate assumptions

    • We totally did

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

• • Suggests to use a software other than solidworks if complex heat analysis is to be modeled

    • We decided to simplify the problem to a 1D heat transfer problem.

Risks and Areas of Concern

• • Concern/Risk that assuming a 1D heat transfer problem (especially due to the irregular shape of the nose lip) may result in inaccurate simulation

Resources or Information Required but not Available

• • Unknown thermal conductivity values of adhesives

  • Unknown thermal conductivity value of honeycomb structure

    • Maybe we treat it similarly to the perforated skin since it is porous

Schedule

• • Design a model for experimentation in the furnace

  • Simulate parameters in solidworks or matlab in 1D heat transfer.

  • Use simulation to brainstorm solutions to problem

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • $0 Spent

  • $5000 Remaining

Progress on Report and Webpage

• • Week 9 Updated