Changes between Version 16 and Version 17 of BalticFaq

Show
Ignore:
Timestamp:
08/18/09 18:23:21 (15 years ago)
Author:
eskil
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • BalticFaq

    v16 v17  
    2727Now tap any level/decostop, and a action sheet will pop-up offering to show a bailout from this spot. 
    2828 
     29=== Do a lost gas plan ? === 
     30 
     31Make a plan, and at the bottom of the plan you'll find the gas consumption. Tap a deco gas and a action sheet will pop-up offering a lost gas plan for losing this gas. 
     32 
    2933=== CCR Bailout and repetitive dives, how do I ... ? === 
    3034 
     
    3741=== Altitude Correction, Fresh Water and Surface Pressure Correction === 
    3842 
    39 When changing the altitude in Baltic, the generated plan is still computed assuming salt water and sealevel pressure when computing depths. This means that the plans are suitable for using gauge that's calibrated for ocean diving, not a gauge calibrated for fresh water and with a surface pressure of less than 1bar. 
     43When changing the altitude in Baltic, the generated plan is still computed assuming salt water and sealevel pressure when computing depths, just with a lower surface pressure. This means that the plans are suitable for using gauge that's calibrated for ocean diving, not a gauge calibrated for fresh water and with a surface pressure of less than 1bar. 
    4044 
    41 === What tables/algorithm does Baltic use ? === 
     45=== What tables/algorithms does Baltic use ? === 
    4246 
    43 Baltic implements VPM/B and ZHL16B with Gradient Factors, it is not based on table look-ups. 
     47Baltic implements VPM/B and ZHL16B with Gradient Factors, also known as "Bühlmann with GF". It is not based on table look-ups. 
    4448 
    4549=== What ZHL16 values are used ? === 
    4650  
    47 The halftimes used (0.9 and upwards) are ; 
     51For ZHL16, the a and b coeffecients are the B table values (ZHL16B). The halftimes used (0.9 and upwards) are ; 
    4852   * N,,2,,: 4, 8, 12.5, 18.5, 27, 38.3, 54.3, 77, 109, 146, 187, 239, 305, 390, 498, 635 
    4953   * He: 1.88, 3.02, 4.72, 6.99, 10.21, 14.48, 20.53, 29.11, 41.20, 55.19, 70.69, 90.34, 115.29, 147.42, 188.24, 240.03 
    5054 
    51 For ZHL16, the a and b coeffecients are the B table values. Prior to the public 0.9 release, the 1b N,,2,, halftime of 5 minutes was used. 
     55Prior to the 0.9 release, the 1b N,,2,, halftime of 5 minutes was used. 
    5256 
    5357=== Where did the algorithm implementations come from ? === 
     
    5559Both were implemented for another project in 2007 and 2008 respectively. The ZHL16 implementation is based on available litterature, such as Dr. Bühlmann's ''Tauchmedizin'', Dr. Wienke's ''Technical Diving in Depth'' and Erik C. Bakers many papers on decompression calculations. 
    5660 
    57 The VPM/B implementation is a reimplementation (no, not a f2c generated conversion) of Erik C. Baker's reference fortran implementation. 
     61The VPM/B implementation is a reimplementation of Erik C. Baker's reference fortran implementation. It is not a f2c generated version. 
    5862