News for hackers. Stuff that matters.

A comment on Debris field found in search for missing submersible. Parent comment

Re:Debris field found in search for missing submersible by throw310822 on Thursday June 22, 2023 @06:31PM (#36440066)
I'm curious about this detail, and I have what is surely a very dumb question. Both titanium and carbon fiber are, afaik, known and used for their strength to weight ratio; so aerospace is a natural application. But in deep sea diving is weight a factor at all? Could one just build vehicles with, I don't know, a 30 cm thick steel plate?
[ Parent | on HN ]
Re:Debris field found in search for missing submersible by dragonwriter on Thursday June 22, 2023 @06:43PM (#36440193)
> But in deep sea diving is weight a factor at all?

You need to be able to attain both positive and negative buoyancy, which constrains density within a range, right? That limits design choices like “giant block of steel with a tiny passenger cavity”.

[ Parent | on HN ]
Re:Debris field found in search for missing submersible by CydeWeys on Thursday June 22, 2023 @06:56PM (#36440346)
It's super easy to add buoyancy by attaching it to the hull outside the pressure vessel. James Cameron's design uses a metal pressure vessel with an advanced foam composite outside of it for buoyancy.
[ Parent | on HN ]