Erik Hofman <[EMAIL PROTECTED]> said: > Jim Wilson wrote: > > > If you could find a way to measure expected range and consumption rate that > > would be helpful. There is a parameter called tsfc (thrust specific fuel > > consumption factor) that can be added to each of the jet engine definitions in > > Aircraft-yasim/747.xml. > > > > <jet x="-2" y="12.65" z="-2.41" mass="8000" thrust="63737" tsfc="0.5"> > > > > Decreasing the tsfc should decrease fuel consumption. Adjust it up or down > > until it seems to be consuming at a correct rate. It'd probably be easy > > enough to estimate the rate you should see if you know the range of the > > aircraft and how much it should use to get up to cruise. Let me know what you > > get so I can add it to the config file in cvs. > > According to this site tsfc for the C6 80C2-B1F is: 0.564 > > http://www.bh.com/companions/034074152X/appendices/data-b/table-2/default.htm
I'm not sure if that is the correct value...been tricked before trying to use data like that in YASim. The web page calls it SFC not tsfc. Note that the value under TO thrust is lower and AFAIK the lower the value the less fuel expended in YASIM. Best, Jim _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
