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3D Printing 4" Bulkhead CAD Model

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OverTheTop

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This bulkhead suits 4" fiberglass coupler. Has provision for a 3pin and 4pin JST XH connector for providing battery charging. Also provision for an o-ring to seal ejection charges from getting past.

BulkheadCAD1resize.png

BulkheadCAD2.png

BulkheadAssembled2resize.JPG

BulkheadAssembled1resize.JPG

BulkheadInAirframe.JPG

This one was printed in resin on a Formlab 2.

Watch out for dimensional changes, depending on which resin you use.
 

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John Cummings

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Very nice!
I don’t have a resin printer but will try this in ABS or PETG. Thanks for sharing.
 

BDB

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I think I’ll print this with my Photon to compare to my simple bulkheads.

I assume this is set up for a single all-thread running through the AV bay, with eye nuts on each end. That would prevent the bulkhead from bearing much of the stress from the ejection charges.
 

OverTheTop

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I assume this is set up for a single all-thread running through the AV bay, with eye nuts on each end.
Correct. The jerk (rate of change of acceleration) during deployment can be significant, so it is the conservative (low-risk) way to do it.
 
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