Aircraft maintenance: Difference between revisions

Aircraft maintenance (view source)

944 bytes added , 10 December 2011

381

edits

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   /consumables/fuel/tank[..]/level-lbs
 are connected and computed automatically. Aircraft should only set one of these properties manually (i.e. on start-up), and NOT try to configure both.
+The properties for mass, volume and density are interconnected and so are those representing the same property with just individual units.
+Usually, fuel density is set statically, so volume is derived from mass and vice versa. The last set property wins. The used formula is
+mass = volume * density
+Internally, content, density, capacity and the usable fuel is stored in metric units and the (US-)English units are derived by constant built in conversion factors:
+* LBS_PER_KG = 2.20462262;
+* KG_PER_LBS = 1.0/LBS_PER_KG;
+* USGAL_PER_M3 = 1000.0/3.785411784;
+* M3_PER_USGAL = 1.0/USGAL_PER_M3;
+* IMPGAL_PER_M3 = 1000.0/4.54609;
+* M3_PER_IMPGAL = 1.0/IMPGAL_PER_M3;
+The value of the property "usable-xxx" is constantly compared against "content-xxx" and drives the value of the boolean property "empty". If content is less than usable, empty is true.
+All the individual tanks are summed up to the properties /consumables/fuel/total-fuel-xxx
 ''Not sure, there is something about it that results in an issue for some aircraft who try to mess with several properties. Torsten knows more...''