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Decided to go with a concave convex nozzle rather than a bell nozzle like on the booster
Two part phenolic seemed smart in design, but in practice was difficult to manufacture
When making the top phenolic ring I got chastised by Todd for a completely infeasible design (was somehow able to manufacture it but it was
super sketch, just had to face 500thou)In the future it would be much better to make the phenolic into one whole part rather than two pieces
"Should not do 'pointy sides' of phenolic on the bottom" - Derek
Case
Requirements
Withstand 960 PSI during burn
Withstand 1440 PSI for twice the burn time during hydrostatic test*
Utilize a FoS of 2*
Hoop Stress Approximation
Used linearized formula
P = pressure
R = radius
t = case thickness
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