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Here is a comparison of the RGBM 20 minute ABT compared to Decoplan
(GFLo=20%, GFHi=100%). Notice how close the profiles are when the last stop
of Decoplan is when shaved by a third.
Stop RGBM Decoplan
140' 42m 1
130' 39m 1 1
120' 36m 1 1
110' 33m 1 1
10' 30m 1 1
90' 27m 2 2
80' 24m 3 2
70' 21m 1 1
60' 18m 2 2
50' 15m 2 3
40' 12m 3 3
30' 9m 4 6
20' 6m 5 7
10' 3m 9 12
Total 36 42
David Shimell
Email: shimell@se*.co* <mailto:shimell@se*.co*>
Project Manager, IBM NUMA-Q, Sequent Computer Systems Limited,
Weybridge Business Park, Addlestone Road, Weybridge, Surrey, KT15 2UF, UK
registered in England and Wales under company number: 1999363, registered
office as above
-----Original Message-----
From: Bruce R. Wienke [SMTP:brw@la*.go*]
Sent: Friday, January 07, 2000 11:03 PM
To: techdiver@aquanaut.com; Nauitec@ao*.co*
Subject: Fwd: WKPP 220/20 RGBM Trimix Schedule With He and Ni Switches
> Gentlemen;
>
> Tim O'Leary passed your "deco help" message and specifically a
> request for a RGBM trimix schedule calculation for tmx16/50 at
> 220 fsw for 20 minutes, with a switch to either 50/50 nitrox or
> heliox at 70 fws, and pure oxygen at 20 fsw. For simplicity,
> ascent and descent rates are 30 fsw/min. Notice deeper stops
> within phase RGBM, and total times less than haldane of comparable
> conservatism -- moderate conservatism in this case.
We are in the process of publishing some trimx and helitrox Tables
for ranged mixtures. We have been diving RGBM schedules for awhile,
here at LANL and NAUI Tec
>
> Bruce Wienke
>
> dive number = 1 altitude = 0.00 ft
>
> RGBM Trimix Version
> B.R. Wienke/Los Alamos National Laboratory
>
> --dive profile--
>
> surface breathed nitrogen = 0.79
> manuever 1 depth = 0.00 fsw time = 0.00 min
> manuever 2 depth = 220.00 fsw time = 3.67 min
> manuever 3 depth = 220.00 fsw time = 20.00 min
>
> trimix = 0.50 helium 0.34 nitrogen switches = 2
> switch 1 depth = 70.00 fsw helium = 0.00 nitrogen = 0.50
> switch 2 depth = 20.00 fsw helium = 0.00 nitrogen = 0.00
>
>
> --adjusted rc = 0.757 micrometer--
>
> - excursion to depth = 220.00 fsw -
>
> - time at inital depth = 20.00 min
> --------------------------------------------
> - stop - depth - wait - tissue - tension
> - 1 - 160.00 - 0.00 - 1.67 - 172.60 -
> - 2 - 150.00 - 0.00 - 1.67 - 170.42 -
> - 3 - 140.00 - 1.00 - 1.67 - 154.86 -
> - 4 - 130.00 - 1.00 - 3.33 - 144.95 -
> - 5 - 120.00 - 1.00 - 3.33 - 137.43 -
> - 6 - 110.00 - 1.00 - 3.33 - 130.02 -
> - 7 - 100.00 - 1.00 - 3.33 - 122.69 -
> - 8 - 90.00 - 2.00 - 6.67 - 111.32 -
> - 9 - 80.00 - 3.00 - 6.67 - 101.33 -
> - 10 - 70.00 - 1.00 - 6.67 - 92.39 -
> - 11 - 60.00 - 2.00 - 6.67 - 78.04 -
> - 12 - 50.00 - 2.00 - 13.33 - 70.31 -
> - 13 - 40.00 - 3.00 - 13.33 - 61.52 -
> - 14 - 30.00 - 4.00 - 13.33 - 51.56 -
> - 15 - 20.00 - 5.00 - 26.67 - 40.14 -
> - 16 - 10.00 - 9.00 - 26.67 - 30.29 -
> ---------------------------------------------
> - total time surface = 39.67 min
>
>
> dive number = 1 altitude = 0.00 ft
>
> RGBM Trimix Version
> B.R. Wienke/Los Alamos National Laboratory
> --dive profile--
>
> surface breathed nitrogen = 0.79
> manuever 1 depth = 0.00 fsw time = 0.00 min
> manuever 2 depth = 220.00 fsw time = 3.67 min
> manuever 3 depth = 220.00 fsw time = 20.00 min
>
> trimix = 0.50 helium 0.34 nitrogen switches = 2
> switch 1 depth = 70.00 fsw helium = 0.50 nitrogen = 0.00
> switch 2 depth = 20.00 fsw helium = 0.00 nitrogen = 0.00
>
- excursion to depth = 220.00 fsw -
>
> - time at inital depth = 20.00 min -
> --------------------------------------------
> - stop - depth - wait - tissue - tension
> - 1 - 160.00 - 0.00 - 1.67 - 172.60 -
> - 2 - 150.00 - 0.00 - 1.67 - 170.42 -
> - 3 - 140.00 - 1.00 - 1.67 - 154.86 -
> - 4 - 130.00 - 1.00 - 3.33 - 144.95 -
> - 5 - 120.00 - 1.00 - 3.33 - 137.43 -
> - 6 - 110.00 - 1.00 - 3.33 - 130.02 -
> - 7 - 100.00 - 2.00 - 3.33 - 117.43 -
> - 8 - 90.00 - 2.00 - 6.67 - 108.94 -
> - 9 - 80.00 - 3.00 - 6.67 - 99.57 -
> - 10 - 70.00 - 2.00 - 6.67 - 90.79 -
> - 11 - 60.00 - 3.00 - 6.67 - 78.78 -
> - 12 - 50.00 - 4.00 - 13.33 - 70.40 -
> - 13 - 40.00 - 5.00 - 13.33 - 61.19 -
> - 14 - 30.00 - 6.00 - 13.33 - 51.02 -
> - 15 - 20.00 - 7.00 - 26.67 - 39.37 -
> - 16 - 10.00 - 8.00 - 40.00 - 29.70 -
> --------------------------------------------
> - total time surface = 49.67 min
>
> total dives processed = 2
>
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