96 hours O2 for 5 people
480 man hours O2
120 hours - 4 people
160 hours - 3 people
240 hours - 2 people
480 hours - me
just saying
On Thu, Jun 22, 2023 at 10:59 AM Chuck McCown via AF <af@af.afmug.com>
wrote:
> Water pressure at 12,500' is something like 5400 psi. There is a lot of
> area on that tube. Who trusts essentially fiberglass to withstand 5400
> psi?
> If it was a pressure vessel it is one thing, but this is essentially a
> vacuum inside the tube, the forces pushing on it are not pulling on those
> fibers. The tiniest non symmetry in shape would be no bueno.
>
> -----Original Message-----
> From: dmmoff...@gmail.com
> Sent: Thursday, June 22, 2023 7:02 AM
> To: 'AnimalFarm Microwave Users Group'
> Cc: ch...@go-mtc.com
> Subject: RE: [AFMUG] This thing on?
>
> I read a commentary today saying the hull was made of titanium and carbon
> fiber.
>
> An Operations Director for the manufacturer delivered a quality control
> report saying that the carbon fiber hull carried a risk of small defects
> expanding into major failures under pressure. They were relying on an
> acoustic fault detection system that was supposed to alert the pilot if
> there were sounds indicating stress in the hull. That Operations Director
> said you'd have a matter of milliseconds between that alert system going
> off
> and a catastrophic failure. He'd expressed those concerns verbally and was
> ignored, so he delivered that report to senior management in 2018 to create
> a written record of his concerns, and was immediately fired. Then he took
> his report to OSHA, there was a lawsuit about divulging company information
> or some such. Lawsuit settled later that year, OSHA didn't take any action
> against the manufacturer. I'd bet a nickel that OSHA doesn't have specific
> rules for submarines, and without any rules to follow they don't have
> enough
> knowledge to assess whether one is actually safe.
>
>
>
> -----Original Message-----
> From: AF <af-boun...@af.afmug.com> On Behalf Of Chuck McCown via AF
> Sent: Wednesday, June 21, 2023 7:32 PM
> To: AnimalFarm Microwave Users Group <af@af.afmug.com>
> Cc: ch...@go-mtc.com
> Subject: Re: [AFMUG] This thing on?
>
> What a horror show. There were so many ways they could have improved their
> chances at survival. Supposedly dissolvable straps should have dropped
> sand
> ballast by now. They had a way to mechanically drop steel ballast. And a
> inflatable bladder.
>
> Why not a power and comm tether to the mother ship? I realize it is
> 12,500'
>
> of cable but fiber optics are pretty much neutrally buoyant.
>
> But no underwater pinger. No ELT. How about a sat tel or VHF radio. Some
> kind of way to talk to the world. No high pressure air to blow tanks. I
> would have wanted explosive bolts on the hatch if there was no other way to
> get out. But why not some kind of fresh air intake assuming you could
> surface. This haunts my sleep.
>
> -----Original Message-----
> From: Bill Prince
> Tryin' to get my ass outa this cramped submarine.
>
>
> bp
> <part15sbs{at}gmail{dot}com>
>
> On 6/21/2023 3:10 PM, Steve Jones wrote:
> > Errbody dead?
> >
>
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