We need to test PTFE samples with our adhesive and at cryogenic temperatures.

Research hydrotesting pumps and create a document with vendor options.
Research hydrotesting procedures. Create a draft document.

Begin developing CAD/drawings for 2nd iteration designs (per our meeting on Sunday 4/16)

Figure out range of stresses expected given various ptfe layer thicknesses

We need to call around and get quotes for endcaps after we have a model.

Looking at baseline thermal expansion heat transfer analysis

where are we going to order aluminum from

lets get some cad models

Back of the envelope calculations & analysis on Flat end cap, to determine how thick it needs to be to meet FS=2, as well as any bolt sizing changes to meet FS.

We need to move all relevant information from google drive to GitHub.

baseline calculations of thermal expansionn

Need to develop further LN2 tests, procedures, safety. Need to schedule appropriate time for said items.

Investigate using these type of fitting instead of current selection

Suggestion: Use markdown files or something else that GitHub can natively render where possible instead of non-free .docx files for project documentation.

Measure the deformation expected in our particular PTFE and with our approximate final dimensions

• Need to develop clear, well-defined, easily reproducible layup procedure for manufacturing the tank. (With focus on documentation/reproducibility for future teams)
  -Potential issues? Tough layup tasks or parts to incorporate? Securing liner, sealant, etc...
  -Start documenting things early once we get all parts here and begin prototyping, much can be reiterated/recycled from LV3 airframe.
  -Need a professional, clear, well-defined document before closing.

Arrange time with MELT to get test PTFE cut to see if lasering gaskets is feasible. Cut gaskets, cut templates for layup procedure

Intensify/accelerate any research pertaining to LOX compatibility in relation to the tank. List/collect documents/resources.

Further refining heat transfer analysis to better understand overall heat xfer through tank, better represent temperatures at each interface etc..

-Need to determine ideal thickness of PTFE liner and corresponding initial endcap inset diameter that preserves mechanical seal during chill and fill process.
-Need to find reliable Elastic Mod and stress/strain behavior for given PTFE material at room and Cryo temps.
(Waiting on Manufacturer)
-Create optimization and FEA model for given interface.

Need to find a local or external lab to do tensile testing of coupon samples

Begin developing full FEA model of the tank under current designs in order to locate stress concentrations due to pressure loads and thermal stresses. Will be able to use this to help determine thickness of lapping portion of ring design or any other necessary changes due to failure/stress concentrations.

endcap prototypes

Need to develop testing procedures, safety, & location for experiments, as well as how/where/when we can obtain LOX. (Get in touch with liquid fuel test stand team as they are already working on this)

Calculate dimensions necessary for shrink fit

Contact surface area between end cap and matting ring if we were to do a shrink fit.
radius of end cap for shrink fit
etc

(title)

Need to develop a format/writeup for all experimental procedures/tests performed for documentation/research purposes in the future.

CAD people-please include summary of different iterations, with general changes and rationals included.