ceiling computation
Posted: Thursday 11. April 2019, 09:13
Question for Ralph.
I have problems understanding the value hwOS (current 3.01 version) displays for the ceiling during the deco phase of a dive. Obviously, I find these things while working on the OSTC4 code.
While on deco, I expect the ceiling to be smaller than the current stop depth, but when the ceiling is 3m shallower than the current stop depth, we should be able to ascend to the next (shallower stop. At the very moment we arrive at the shallower stop, the ceiling and new current stop depth are equal (for some time, ie. very short for short stops, but rather long for long stops). In other words: I expect the ceiling and current stop depth to progress in sync.
But it is not like that on hwOS. See for example some screen dumps in the GF factor brochure. Picture 11 shows ceiling 8.2m while we are still at a stop at 15m (and have 2 minutes of deco to go there). I simply do not understand this, and it feels wrong. Simply, when the ceiling is 8.2m we would be able to ascend to the stop at 9m, without violating GFhigh.
--jan
I have problems understanding the value hwOS (current 3.01 version) displays for the ceiling during the deco phase of a dive. Obviously, I find these things while working on the OSTC4 code.
While on deco, I expect the ceiling to be smaller than the current stop depth, but when the ceiling is 3m shallower than the current stop depth, we should be able to ascend to the next (shallower stop. At the very moment we arrive at the shallower stop, the ceiling and new current stop depth are equal (for some time, ie. very short for short stops, but rather long for long stops). In other words: I expect the ceiling and current stop depth to progress in sync.
But it is not like that on hwOS. See for example some screen dumps in the GF factor brochure. Picture 11 shows ceiling 8.2m while we are still at a stop at 15m (and have 2 minutes of deco to go there). I simply do not understand this, and it feels wrong. Simply, when the ceiling is 8.2m we would be able to ascend to the stop at 9m, without violating GFhigh.
--jan