[PSUBS-MAILIST] Titan submersible missing at Titanic site

[Sean T. Stevenson via Personal_Submersibles]

That will be a spherical sector window with conical bearing surface. You can kind of see the inside surface abberation if you look closely at the window in your video (0:12 - 0:18). Certainly, a window with spherical outer face and flat inner face is not a standard geometry in any reference.

The spherical sector window with conical face is a superior geometry because all points of the window are exclusively in compression. This is why PVHO-1 gives such windows a 20 year base service life, as opposed to 10 years for square edge or flanged.

Sean

-------- Original Message --------
On Jun. 30, 2023, 09:05, Jon Wallace via Personal_Submersibles wrote:

> According to an article I found the viewport diameter was 53cm which I believe was the outside dimension. Based upon a video I found with Rush putting his hand up to the inside viewport I would estimate the inside diameter closer to 300mm. The seat appears conical however the viewport had a convex outside surface. Hard to say if that means it was just a regular spherical segment with conical seats or a conical viewport with a convex exterior surface.
>
> https://www.insider.com/titan-missing-submersible-photos-interior-exterior-dock-launch-2023-6#the-titans-viewport-measured-21-inches-according-to-oceangate-thats-the-biggest-viewport-of-any-deep-diving-submersible-6
>
> https://www.youtube.com/watch?v=ClkytJa0ghc (See 0:13 to 0:29)
>
> Jon
>
> On Friday, June 30, 2023 at 10:07:33 AM EDT, MerlinSub at t-online.de via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
> I check out some pictures and based on a given length of 6500mm
>
> I come to the following rough figures:
>
> Diameter hull 1600 mm
>
> Diameter front porthole outside 700 mm
>
> Diameter front porthole inside 466 mm
>
> (these diameters indicate that the porthole could be original designed as entrance..)
>
> Now idear about the thickness of the acrylic
>
> - but will check out PHSME about standard flange angles tonight.
>
> Carsten
>
> -----Original-Nachricht-----
>
> Betreff: Re: [PSUBS-MAILIST] Titan submersible missing at Titanic site
>
> Datum: 2023-06-30T15:31:14+0200
>
> Von: "MerlinSub at t-online.de via Personal_Submersibles" <personal_submersibles at psubs.org>
>
> An: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
>
> For me it looks like the biggest diameter porthole used in that deep.
>
> Has somebody here inner and outer diameter and the thickness?
>
> Carsten
>
> -----Original-Nachricht-----
>
> Betreff: Re: [PSUBS-MAILIST] Titan submersible missing at Titanic site
>
> Datum: 2023-06-29T21:11:55+0200
>
> Von: "Jon Wallace via Personal_Submersibles" <personal_submersibles at psubs.org>
>
> An: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
>
> The pictures of Titan that I see in water show 16 bolts holding the retaining ring in place. See attached photo.
>
> Jon
>
> On Thursday, June 29, 2023 at 11:49:18 AM EDT, MerlinSub at t-online.de via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
> I have seen a video how they make the carbon cylinder and can imagine that the boat imploded in longitudinal direction.
>
> Create a massive shock wave with push the window out (not in). As I saw in another video the window was hold by only 4 bolts outside.
>
> All titan parts in the video seems undamaged.
>
> Carsten
>
> 
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