Mailing List Archive

Mailing List: techdiver

Message Display

To: werry@mp*.mp*.ca*
Subject: Re: Risks of CO2 PP when air diving?
From: story@be*.es*.sg*.co* (David Story)
Cc: techdiver@opal.com
Date: Thu, 28 Jul 1994 14:31:03 -0800 (PDT)

werry@mp*.mp*.ca* writes:
> 
> since your sig says submariner research how about explaining why
>compartment pressure is used in the calculations for when you must
> make an escape from a downed submarine.  

Compartment pressure is used because the evacuation chamber (outgoing
airlock) in the submarine is pressurized to ambient pressure before
you leave the submarine.  Thus you effectively have an ultra-fast
descent to depth, forming bounce dive to depth, and have to account
for the inert gas uptake during compression and ascent.  

Think of it as a V-shaped dive, with the first half of the V (descent)
ultra-fast, and the second have of the V (ascent) merely "extremely"
fast.  :)

Cheers,

David Story                        NAUI AI Z9588, PADI DM 43922, EMT
story@be*.wp*.sg*.co*		  Every dive is a decompression dive.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]