Page Comparison

What is something you struggled with this week? What is something you are proud of this week?

• Finishing SRR early enough for practice

• We got our SRR done for actual presentation day and got good feedback

• Members seemed to enjoy workday

• wasnt confident in how the meeting went and how to do member accountability

• workday was really good, felt like all the members were engaged and having a good time(matthew wanted to kill himself tho)

• Workday was good, but a few members were missing : (

• SRR was good, constructive and valid criticism/pointing out oversights we had
  

• Good workday, all new members were there and started working on Solidworks. Also started sims for battery module.

SRR Key Takeaways/Next Steps

• Overall

  • Ideas for reviewing drawings and structure for estimating weights

  • Get reasoning for 3 wheel by PDR

• Suspension

  • Not being scared of aluminum welding and using that as a way to push ourselves

  • Quantify with just reasoning our parameters like 60-40 or FOS

• Steering

  • Look further into gearbox design as the issues we were maybe afraid of aren’t as big of a thing

  • Look into tunability

• Unsprung

  • Figure out brake disks

  • Tolerancing of bearings

Overall

• we need to define how we are going to do reference points on the mold, and confirm that the knowledge is transferred

Aerodynamics

• We need to solidify the plan for splitting up work and creating different parts of the shell(nose, tail, how to we avoid it messing up the overall geometrey)

• Talk about roll cage in an intersystem meeting, because thats the next big thing that defines what we do

Composites

• Figure out design of windshield with respect to the polycarb and what materials we should use

• LOTS of wesley notes, not worth putting all in this spot since its lot of smaller specific notes

• resin infusion is a time and money sink(vacuum)

• consider having aeroshell PDR at the same time as dynamics and frame CDR

• Be more thoughtful/less arbitrary with goals (i.e. goals were good, but have them bounded better, and be able to directly measure/compare them in the future

• Really really review composites plan to ensure we can make good progress while reaching our key frame goals

• Be more thoughtful in ergo design, think more about possible situations/applications (minimize oversight)

• Difference between making a part that would be cool, and making a part that is practical and effective (i.e. carbon fiber steering wheel vs fiber glass steering wheel)

• Rethink whether we really need so much of cooling, vibration dampening, etc

• Have a good testing and simulation plan - know the basics.

• Do composite testing but only test for your expected loading/impacts. Wastes time

• Add FOS to only few parts and then design other parts to handle extreme cases

• Shield all HV cables - probably a source of most EMF interference

• properly fuse all battery connections

• Match mechanical loading of rest of the car in terms of FOS/what we can see during transport

Workday Review

Aerodynamics

• more solidworks training

• got them going on looking at a bunch of cars and thinking about design

• taught how to import an airfoil

Composites

• solids lecture!

• spent more time doin researching

• had meetin w array and dynamics to discuss projects

Both

• vibes were really good in both teams, feels like people are enjoying being there

• Ergo got directly distributed projects to get started on (new members → ergo jig) (old members → daybreak re-designs)

• Frame learned about weldments, used weldments, then performed FEA on a structure in SolidWorks. Also, got them up to speed on FEA theory and gave then a little walkthrough/rundown of ANSYS
  

• New members started solidworks project

• Enclosure design almost done

• Started working on an equation for calculating the heat dissipation of a single cell

• Battery internal PCBS done (need to add a few components but major design complete)

Next Workday Plan

Aerodynamics

• Introduce members to surface modeling

• continue work on the aerodynamic profile slides

Composites

• continue researching projects

• if we can remove frame we’ll do work

• Assign frame members direct tasks

  • Get started on reference model of frame, possibly start making an oc prototype

  • Begin frame jig design brainstorming

• Continue ergo tasks

  • Finalize ergo jig plans/design

  • Continue pedal box redesigning

  • Continue steering wheel research

• Start giving real tasks to new members

  • Acetone bath rig

  • Vibration testing

  • Water ingress barriers

  • New cooling system for daybreak

• Start eplan training if we have licenses

• Hopefully battery is done by then so we can start manufacturing plan and more detailed timeline + start ordering materials

• Make general layout for dashboard buttons to give to controls

Daybreak Progress?

Finished SRR and now can begin CADing the new control arms

nope, waitin to remove frame

nah

^

Questions subsystems want to ask:

• Ergo: if we get a driver dimension form together, can every channel blast it out so we can have driver data : D