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
Harshit’s keyboard works
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
Base cooling off of RMS current
Workday Review
Overall
Jacob’s solids Lecture
Suspension
Walked through suspension parts
Assigned members new member project of design their own suspension and vsusp
Steering
Walked through basic ackermann model and design considerations for upper and lower steering
Showed how 6 bar linkage works to achieve ackermann
Unsprung
Walked through unsprung components and potential designs
Gave research tasks
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
Overall:
Play SRR for ppl that weren’t at SRR
Suspension:
Basic suspension overview again - SIMPLIFIED
Go over notes of the video together
Go over questions
Go over the starter project - 1 hour to work on it
Explain it step by step and show my model
Go over assignments with DAYBREAK
Explain in detail the different geom and design changes for it
Control arm
Bearing selection
Extender fix
I walk through esther master model - if i can finish it
Clickup?
Steering:
Calculate physical geometry for Ackerman for 6 bar
Daybreak tasks (still needs to understand more)
Unsprung
Mockup designing (architecture pros and cons)
Brackets (mounting with wishbones and steering)
Hubs
Axle/Spindle
Upright
Research
Figuring out deliverables today
Sumi: bearings
Sohan: brakes
Jonathan: tires
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
^
Module sims, heat calc and heat pipe research progress
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