Combined Decompression Model (CDM-18)

[narked at 90]

this Tim rose makes me chuckle you want to see the beer hat breather we've started playing with......you need to be pissed or you would'nt even put it on your head!!!!!! i recken i should get 10mins out of the scrubber but it is going to be mixed gas ccr just for laugths!!
john routley

[Martin Burnard]

Ten minutes with a Scrubber in Plymouth will be cheap, but the trip to the clinic afterwards will be embarrassing.
So is that why they are called rebreathers....when you come up for air you begin rebreathing?
I guess the closed circuit bit just means if you have the scubber in the car and fart you keep the door closed.

I must go before the boys in white coats come back.

[narked at 90]

Originally Posted by Martin Burnard

I must go before the boys in white coats come back.

what do you meen we are the boys in white coats!
john

[cdmdeco]

Originally Posted by Robert

There's actually a link to this from the deepest wreck thread but it might have got a bit lost in the 'he's an idiot'/'he's quite adventurous' debate

Interesting paper on 'Assessing dive profile safety by using A Combined Decompression Model' including some comparisons of different algorithms.
Who knows, I might even buy a copy of the analyzer (sic!).
(There's a trimix blending Excel sheet as well, but I haven't played with it yet.

Robert

++++++
Hi Group,

My name's Steve Burton and I created the Combined Decompression Model CDM-18 referred to in a few posts in this forum.

The current link for more information on the model and its background is at http://www.scubaengineer.com/cdm18_t...e_analyzer.htm

The CDM-18 model and ICD avoidance algorithm used within the spread sheet was designed for evaluating decompression profiles and gas mixtures produced by any computer or table based techniques against a decompression model comprised of the most sensitive tissue values revealed by all previous 'man based' testing, with an embedded ICD avoidance algorithm deduced from discussions with Mark Ellyatt so as to avoid repeating known occurrences of tech divers 'throwing a seven' during a gas switch from Trimix to Nitrox. This would then hopefully avoid the tech diver from having to demonstrate that ever popular party trick of holding mixed gas decompression stops with 'no sense of balance' for a few hours while vomiting on every breath.

Planning Ultra deep Trimix bounce dives in the 150-300meter depth range and beyond is a very complex procedure; there has been almost no 'formal' research completed in this depth range. Hence the statistical justification for the decompression models that hope to divine the correct decompression profile in these depth ranges, such as my CDM-18 concept is very shaky indeed.

Additional problems arise in finding reviewers with sufficient math competence to review and find bugs in the exponential math routines and isobaric counter diffusion avoidance algorithm.

I would be pleased to receive any corrections or comments regarding either the decompression model or the paper on dive profile safety I co-authored... even the spelling and grammar if thats all of it you can understand.

Being born in Birmingham (UK) combined with having an American English Teacher for a few years, left me somewhat disabled in the English language department ;-)

Regards,

Steve Burton
Diver/Engineer. Pattaya, Thailand

Designer: - Combined Decompression Model (CDM-18) Dive profile analyzer
Author: - Draft Paper "Assessing Dive Safety using a Combined Decompression Model"

[Garf]

[quote=cdmdecoI would be pleased to receive any corrections or comments regarding either the decompression model or the paper on dive profile safety I co-authored... even the spelling and grammar if thats all of it you can understand.[/QUOTE]

ooooh miaoooww. May I direct sir to http://www.amazon.co.uk/exec/obidos/...363775-5043600

[tom]