Exteriors Leads Meeting Notes

09/24/2024

Must haves for MS16:

• Length of 5.5-5.8

• Is maximizing length optimal?

  • Reduces pressure drag, increases friction drag

• Adjust split line between aerobody tub and roof

  • No negative draft

  • Split line at vertical part of the aerobody

• Canopy

  • Cut line changed

    • Needs to “flatten out”

Exteriors goals for MS16:

• Nose

  • Do not bring it up, keep it lower

    • Easier to manufacture

    • Not as much camber on the roof

    • Space for battery/other systems in the nose now?

• Bring Point where roof “hangs over” tub more towards the front

• Split line needs to be at a point where the roof and tub profiles are vertical

• Ensure tail is not “flimsy”

• Canopy

  • Increase canopy length

    • length/height ratio as close to 6 as possible

• Tail

  • Don’t come to a point, come to a box instead to fit license plate

  • Back panel in the layup with the tub

Research to be done:

• Teardrop vs straight side-edge bottom profile?

• Optimal CD/frontal area ratio

• Friction drag vs. pressure drag (what has the bigger effect in our situation)

10/01/2024

• Canopy

  • Task Idea: Parametric Model

    • Can eventually be extended to be a parametric model for the whole aerobody

    • Can be given to any members who have done onboarding

• Friction vs Separation Drag:

  • In general, pressure drag should be the dominant drag component over friction drag [Goro Tamai: The Leading Edge].

  • On a solar car where pressure drag should be less noticeable, friction drag is more prevalent.

• dynamic wheel cover task doc complete

  • review in meeting