[PSUBS-MAILIST] Titan submersible missing at Titanic site

Fri Jun 23 08:38:56 EDT 2023

 I am not at all concerned about using off-the-shelf parts for components that do not require sophisticated specialized equipment and certainly those components that do not have any relativity to hull integrity.  The xbox controller, camper world interior lights, and steel pipe ballast were all reasonable components in my opinion and we could have a lengthy discussion about why, if anyone was really interested.  The press edits interviews and reports to viewers based upon the message they want to portray.  I saw the interview Rush had with David Pogue talking about the xbox controller and Pogue slaps his forehead in a WTF incredulous manner.  I'm guessing the part where Rush justifies the use of the controller and why it's acceptable to use it was edited out because it's much more sensational to leave the viewer with..."this sub goes all the way to the Titanic and uses an xbox controller."
Jon 

    On Friday, June 23, 2023 at 07:23:44 AM EDT, Alec Smyth via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 The controller is not something I would use, mine is physically much tougher and has things like O-ring seals on all the pots and switches. Nonetheless, I found it amazing the degree to which the "experts" latched onto that and anything else that was off the shelf, as if the concept of using OTS components were some sort of cardinal sin. The controller, the cabin lights from Camping World, and recycled pipes for ballast were all treated as obvious evidence of bad engineering or even a total scam. Who cares what your ballast was in a previous life, if it weighs what you need it to weigh? Moving forward we not only have to look at whether OTS parts work and are reliable, but also how they will be perceived. I'm not just ranting against the misinformed TikTok experts, I think this is an actual lesson for us. Imagine a boat ramp conversation with some local authority right now, when you explain that you control the sub with a game controller. 
:)
On Fri, Jun 23, 2023 at 2:52 AM Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi Doug,my ambient sub had a game controller controlling speed, steering, ballast & a few other things. They have been tested and abused by several million kids. :) . But aside from that I had back up for all those functions so if it failed the sub still operated. And I am sure Oceangate would have done the same. ABS & DNV-GL have a principal that no one failure can cause a catastrophic event. Even though I have heard they weren't certified, they would certainly have been building to the rules.All a bit strange as they were only half way to the wreck.If the hull had have imploded it would have failed at maybe 1/4 of its crush depth. If power failed they would have gone to the surface, & should have had surface coms that would work with a back up battery.Alan
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  On Wed, 21 Jun 2023 at 12:41 am, Douglas Suhr via Personal_Submersibles<personal_submersibles at psubs.org> wrote:   _______________________________________________
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