[chrisch]

Guys

I have been reading this stuff with interest. I am curious as to where the Helium M values came into being. If, as I read it above, AAB "guessed" at them why are they in use? Or was there perhaps an input from the military e.g. USN.

Most of us use VPM simply because V Planner is easy to get and not expensive. Baker's model & theories may or may not be any better than others.

To write this software (or Proplanner or whatever it is that others may use) the author must have input the M values and therefore there must (or maybe I am assuming too much) be some "accepted" M values somewhere.

Or have I misunderstood how V Planner et al work? I assumed they start with some form of Buhlmann algorithm as the base from which to calculate, with some modification of either M values or saturation or off-gassing times depending on how the author views either deep stops or bubble mechanics (Weinke) or both?

Chris