Overview of Status of Analysis, Design, Fabrication, Tests, etc.
The design of ribs is still in progress
The material selection between aluminum and steel has been finalized on Monday
The focus of the project is shifting from design to manufacturing process
Accomplishments from Previous Week
The overall decisions about material and the direction of the tank design
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Finish the design of the tank with FEAs
Obtain estimated quote and time for manufacturing the tank
Finish the BOM
Measure the weight of a casket
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Anson is ok with steel as long as it doesnt weigh too much
anson isnt worried about stainless steel being punctured even if its 1/16 thick.
anson cares more about easily replacing the casters than he cares about easily replacing the tie-down hooks.
G force on dolphins is not a worry for anson. He surmises the g force would be similar to that of a passenger plane.
steel coatings are not a priority.
the prince of the ATC cant be more than $3k (just a reminder)
miter welds better in ansons opinion
anson wants us to get quotes from other manufacturer’s before we ask his welder, cause his welder is overworked.
dont weld together short beams to get one long beam
use whichever trusses are lightest. ansons suspects steel is overbuilding anyway. just make sure the FEA shows the box is strong enough. be sure the bottom is stiff enough.
avoid overkill in strength.
new ATC needs to be about same weight as old ATC (about 970 lbs). This doesnt include stretcher poles, dolphin, water. This does include wheels, scaffold, etc. It is ok to remove some of the wheels if we are confident removing the wheels wont cause problems. test existing ATC on forklift with fewer wheels?
whatever stainless steel we order, add 30% extra to the order, as long as its thin and not those heavy bottom beams
we want the scaffold to be locked into place, and not require any tools. the lock can be removable during airplane loading to temporarily shorten the long end of the ATC.
possibly make the scaffold clamp that chris CADed wider so that a set screw can be used to tighten into the top box beam. Just make sure the set screw is tightening into a box beam and not the thin inner layer of the ATC.
1/16 inch steel is perfectly fine in Anson’s opinion.
Dont worry about people walking around inside the ATC to clean it.
Bottom two thick steel support beams need to be located directly above the wheels.
Anson thinks (from the CAD model we have now) that the two support beams could be closer together (in the old ATC there were 3 beams, we removed one) but that would mean also moving the wheels closer together.
Anson will get us some “weld specs”
There might need to be plate gussets for all welded corners
Matt, Tom, Ian should know about welding and we should ask them for advice.
For quotes, the weld attachments need to be part of the solidworks CAD file.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
We were recommended by Dr Babcock to reconsider steel. We spoke with Ian (but not Tom) about steel. We also spoke with the sponsor Anson about steel, which he is OK with.
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Find a better way to keep track of time. Consider removing more content from your slides. They are very informative but perhaps a bit too dense.
Look into perhaps a thinner steel for the material of the outer hull.
For the support beams, you should maybe look into adding triangle beams underneath the beam for more support.
I highly recommend doing more FEM on the support
Risks and Areas of Concern
Rib/truss design- what is the best for the tank?
Resources or Information Required but not Available
Types of Welding
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
n/a
Progress on Report and Webpage