Just for fun Titanic calculations

[AquaHump]

Okay we know it can not be done, but jus for fun. The Titanic rests 2.5 miles beneath the ocean. So, it would be 401 bar/ata. What would the air volume and the air density be?

 

[Wijbrandus]

And what kind of a lift bag would you need to bring it up?

 

[Cap335]

Okay we know it can not be done, but jus for fun. The Titanic rests 2.5 miles beneath the ocean. So, it would be 401 bar/ata. What would the air volume and the air density be?

Air volume for what? Are you trying to lift it? If so do you have an app weight and displacement?

Would this be for a record dive attempt? What RMV are we going to use?

Randy

 

[pants!]

I would use around 240 cubic feet of gas per minute.

The pO2 for air would be 84.21

To get a working pO2 of 1.4 we'd need a gas with 0.3% oxygen.

 

[AquaHump]

I would use around 240 cubic feet of gas per minute.

The pO2 for air would be 84.21

To get a working pO2 of 1.4 we'd need a gas with 0.3% oxygen.

So, how big or how many stage bottles would you need and what would be your deco time for lets say a 20 min down time

 

[pants!]

20 minutes of bottom time would require 4800 cf of gas. Since I couldn't breathe the bottom gas on the way down, I'd need 25 PST E8-130s pumped up to 5000 psi each just for the bottom gas.

The gas alone would weigh almost 400 pounds. By the time you add in travel and deco gas I'd probably be starting out roughly 1000 pounds negative.

 

[miketsp]

So, how big or how many stage bottles would you need ?
..snip..

I don't think it would be realistic to use stage bottles, only a couple of breaths per cylinder - so you'd need surface supply with a long umbilical.
But then you get into problems of the volume of inert gas you have to handle so you'd be better off making it a closed cycle - yeah get a rebreather.

 

[AquaHump]

20 minutes of bottom time would require 4800 cf of gas. Since I couldn't breathe the bottom gas on the way down, I'd need 25 PST E8-130s pumped up to 5000 psi each just for the bottom gas.

The gas alone would weigh almost 400 pounds. By the time you add in travel and deco gas I'd probably be starting out roughly 1000 pounds negative.

can you say dirt dart
lets just say that we staged the bottles along the way?(good planing) howmany days would it take to deco :10:

 

[RIOceanographer]

I don't think it would be realistic to use stage bottles, only a couple of breaths per cylinder

Its actually worse than that, you wouldn't get any breaths. At that depth the ambient pressure is much higher than the pressure inside of a filled scuba tank! If you opened the valve, gas wouldn't come out of the tank, water would go in!

 

[pants!]

I feel negligent that I forgot that in my calculations! I'd get no breaths out of 25 130s filled to 5000 psi because ambient pressure is almost 6000 psi.