Bucks -> RE: Undocumented Feature (6/7/2009 2:47:12 AM)
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ORIGINAL: hermanhum The new changes will be implemented in the next PlayersDB release. Thanks for the explanation. I concur that this isn't a Game Engine issue. It's a Game Documentation issue. This is (at least) the third instance of Undocumented Features causing end-user misunderstandings. I've looked in the: a) AGSI wiki, b) Release notes, and c) eManual There doesn't seem to be any public way to find out about these changes. Am I looking in the wrong places? You're correct, there's no documentation to be found, I even went back to the Harpoon 2 manual to find what I could: quote:
Air Independent This propulsion is used primarily on submarines. Air Independent functions as a diesel engine at Periscope and Surface depths, and burns stored oxygen at lower depths. The unit upon which this propulsion is placed must rise to Periscope and Surface depths to recharge its oxygen supply. Air Independent propulsion uses Diesel and Air Independent fuel types. Maybe you had looked this over as well, seeing as you had the PDB Submarines configured this way. In effect the two fuel types listed are simply those the AIP system can actually utilise, not the only two the Submarine should carry. A little further on the H2 manual points to the following fuel capacity guidelines and useage which is basically where I began researching this subject: quote:
Some Capacity Guidelines The following list should give some indication of the amounts to use for the Capacity field. Batteries - capacity represents seconds of operation at 5 knots. Fuel Oil, Aviation Fuel, Gas Fuel, Diesel Fuel (on ships) - capacity represents tons of fuel. Air Independent - capacity represents stored oxidizer sufficient to use 1 ton of Diesel Fuel. Then I found the fuel consumption figures to base my initial calculations on after some quick research into the RL systems readily available on Wikipedia. Sometimes the best way to get things working is to simply "give it a go" and adjust your figures to take account of observed behaviour. A little like hunting bugs in the code, you apply a process and observe THEN arrive at conclusions based on the known facts and your observed behaviour: quote:
Fuel Type: Diesel and Air-Independent (simultaneously) Fuel Consumption Cruise: Consumes fuel at rate of 100 * (tons fuel/Endurance) Endurance= range (nm) /speed [6 -10] kts Tons Fuel = the total fuel capacity of the unit. Boost: same as Cruise. - Diesel A propulsion type for use in both submarines and ships. A combustion engine using diesel fuel. Must be within 20 meters of the surface to snorkel air for the combustion process. Fuel Type: Diesel Fuel Fuel Consumption Cruise: Consumes fuel at rate of 100 * (tons fuel/Endurance) Endurance= range (nm) /speed [6-10] kts Tons Fuel = the total fuel capacity of the unit. Boost: Same as Cruise. I've also checked the ANW Database manual and it will need some work to have a correct and relevant explanation of the process of constructing AIP submarines. If you follow it as you may have Herman, you'd simply be back to square one (no electric motor). quote:
5. For submarines using Air Independent propulsion, you need just the AI engine and two fuel loads. One load of diesel as calculated using the same equations as for ships, and one load of air independent fuel of the same amount as diesel. - HP3-DatabaseManual-rev1.2.pdf I can see the need for rev 1.3 already. I will at some point in the future set about a corrected version of a DB editing manual shortly. There are many features not covered in the present version of the manual and also stuff relevant to getting the most from the HUD3. Cheers Darren
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