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Overview

The HADES Cup transfers load from the piston and diaphragm to the booster section, breaking the shear pins and initiating the Recovery deployment sequence.

v1.0: Pathfinder

The first edition of the cup is a simple aluminum cylinder that accepts the Diaphragm at one end via grub screws. It is a simple aluminum cylinder with measured dimensions:

Thickness (t)0.1"
Inner Radius (ri)5.725"
Length (l)14"

Ground testing has shown that the cup does not buckle under normal piston operating loads, even those as high as 3500 lbs (an order of magnitude greater than normal operating loads) as we predict we saw in Ground Test November 10, 2017.

v2.0: Hermes Dimensions

Resources

NASA, Buckling of Thin-Walled Circular Cylinders

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