[PSUBS-MAILIST] Titan submersible missing at Titanic site

[roberto alvarez via Personal_Submersibles]

Lessons learned,need more persons die ?

El jue, 29 jun 2023 a la(s) 23:54, Marc de Piolenc via
Personal_Submersibles (personal_submersibles at psubs.org) escribió:

> That makes better sense. I was imagining tapped bushings drilled and glued
> directly into the hull structure.
>
> Marc
> On 6/30/2023 3:14 AM, Jon Wallace via Personal_Submersibles wrote:
>
> Marc,
>
> The head was bolted to a titanium transition ring that was bonded to the
> carbon fiber cylinder.  There's a video out there somewhere that shows the
> transition ring being glued to the hull.
>
> Jon
>
>
> On Thursday, June 29, 2023 at 11:47:48 AM EDT, Marc de Piolenc via
> Personal_Submersibles <personal_submersibles at psubs.org>
> <personal_submersibles at psubs.org> wrote:
>
>
> I'm curious about the end cap being totally intact (except for the missing
> viewport). If I remember the other video, the entire end cap is bolted onto
> the pressure hull  cylinder after the passengers have boarded. End cap
> titanium, pressure hull laminated carbon fiber reinforced composite. I'm
> thinking of differences in response to temperature changes and varying
> external pressure. Could this have been a shear failure separating the
> entire front assembly from the rest of the hull? I remember an earlier
> message on this board mentioning scary sounds from the acoustic sensors -
> strain at the bolted joint? It would be interesting to see what is left of
> the bolts if they are ever recovered.
>
> Marc de Piolenc
>
>
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