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3.31 Suunto Fused RGBM
Suunto's decompression model development originates from the
1980s when Suunto implemented Bühlmann's model based on M-
values in Suunto SME. Since then research and development has
been ongoing with the help of both external and internal experts.
In the late 1990s, Suunto implemented Dr. Bruce Wienke's RGBM
(Reduced Gradient Bubble Model) bubble model to work with the
earlier M-value based model. The first commercial products with the
feature were the iconic Suunto Vyper and Suunto Stinger. With
these products the improvement of diver safety was significant as
they addressed a number of diving circumstances outside the range
of dissolved-gas-only models by:
Monitoring continuous multiday diving
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Computing closely spaced repetitive diving
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Reacting to a dive deeper than the previous dive
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Adapting to rapid ascents which produce high microbubble
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(silent-bubble) build-up
Incorporating consistency with real physical laws for gas kinetics
•
In Suunto Fused™ RGBM the tissue half-times are derived from
Wienke's FullRGBM where human body is modeled by fifteen
different tissue groups. FullRGBM can utilize these additional tissues
and model the on-gassing and off-gassing more accurately. The
amounts of nitrogen and helium on-gassing and off-gassing in the
tissues are calculated independently from each other.
The advantage of Suunto Fused RGBM is additional safety through
its ability to adapt to a wide variety of situations. For recreational
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