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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