On Tue 24 September 2002 10:16, Elad Yarkoni wrote: > > Since there is no such thing as a perfect power source you could go to > > much more detail - modelling the internal resistance of the battery and > > it's own capacitive and inductive load characteristics for example. > > I think it's not really needed (after all, we may > end up writing pSpice within FlightGear... ;) ) > Sorry I wasn't being clear. My use of 'you could go to much more detail' usually means 'you could, but why?! ' :-)
> Hmm... we can either find an algebric expression (exponential functions > would do the work nicely), or use interpolation table (I know some > voltage drop diagrams... I have it somewhere in my intro. to Electronic > Devices lecture notes). I've got some stuff on battery discharge characteristics for different battery types somewhere. Are aviation batteries lead acid as in many cars or are they different? Maybe we just model the general characteristics of the given type of battery usually found in that aircraft. As you quite rightly pointed out the discharge curve for most batteries can be described with quite a basic exponential function. The atmospheric conditions surrounding the battery may change it's characteristics a little but I'm sure aviation batteries are made with that in mind too. _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
