Reverse Dive Profile 3A

Copyright 1999-2001 Eric Maiken

Here's the RDP 3A profile Erik analyzed, with the time scale extending to 60 min after the dive, and rates of 100 f/m on descent and 33 f/min on ascent

      depth(fsw)   run-time(min)  fO2 / fN2

0.`	0.`
0.`
0.`

Here's a plot of the ZHL-16 compartment tensions throughout RDP 3A sequence of dives

The hot colors are the fastest compartments of the ZHL-16 half-time set: {4.,8.,12.5,18.5,27.,38.3,64.3,77.,109.,146.,187.,239.,305.,390.,498.,635.} min
In and out gassing are symmetric.

The values are close to Erik's, however there are differences that are likely due to: 1) choice of compartment half-times; 2) My use of the Yount and Lally value for the sum of alveolar partial pressures: pp + pp = [atm], which is, perhaps, a bit large.

Here's the time dependence of the set of 16 gradients: G(t) = (t) -

The central portion of the plot represents the 120 min surface interval, where the gradients decay to the inherent-unsaturated value of ~ 0.68-1 Ata.

Knowledge of the gradients allows us to calculate a number of quantities numerically