dive plans for testing

[Pedro Neves]

On 04-07-2015 15:30, Dirk Hohndel wrote:
> Could someone with access to different dive planning software please 
> run a few test plans for me?
>
> Let's do the profile that Rick quoted from the VPM documentation:
>
> three gases: 15/45, 36%, 100%
> descent rate to bottom of 75ft/min down to 260ft (weird... 208 seconds 
> to the bottom...)
> 30 minutes bottom time (we can't do that it seems, drop down to bottom 
> is included in the first segment... so let's say 33 minutes until end 
> of bottom time)
> ascent rate 30ft/min
> 10ft/min from the final stop (actually, Subsurface can't do that, so 
> 10ft/min from 20ft which will add a tiny 40 seconds from 20ft to 10ft)
>
>

This is what I get with Decoplanner 3.1.3:

(VPM-B, conservatism = 0, descent rate = 75ft/min, ascent rate = 30 ft/min)

Depth    Time    O2    He    Start    End
260    33    15    45    3    33
180    1    15    45    35    36
170    1    15    45    36    37
160    1    15    45    37    38
150    1    15    45    38    39
140    2    15    45    39    41
130    2    15    45    41    43
120    3    15    45    43    46
110    2    36    0    46    48
100    2    36    0    48    50
90    2    36    0    50    52
80    3    36    0    52    55
70    3    36    0    55    58
60    5    36    0    58    63
50    7    36    0    63    70
40    8    36    0    70    78
30    13    36    0    78    91
20    14    100    0    91    105
10    23    100    0    105    128
0                    129

And this is the same dive with Buehlmann (GFLow=100 GFHigh=100)

Depth    Time    O2    He    Start    End
260    33    15    45    3    33
110    1    36    0    38    39
90    1    36    0    39    40
80    2    36    0    40    42
70    4    36    0    42    46
60    4    36    0    46    50
50    6    36    0    50    56
40    8    36    0    56    64
30    13    36    0    64    77
20    14    100    0    77    91
10    28    100    0    91    119
0                    120

Cheers:

Pedro
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