Andy Ross wrote: > Jim Wilson wrote: >>It appears that the thrust/altitude curve is a bit too steep. [...] >>Also there seems to be a greatly exagerated "ram effect" (not sure of >>correct term). It seems that airspeed changes might be affecting the >>thrust value too greatly, but I don't have a feel for this at all. > > > OK, this doesn't surprise me too much. I haven't examined the Jet > stuff very closely. The way the code works is that it matches some > performance curves I got out of McFarland for a 707 engine. The > turbofans on the 747 actually won't be too terribly far off in their > thrust performance, I'd think. (With a little scaling of the minor > output numbers like N1 and TIT to ones appropriate for the engine.) > Most likely, I've got an interpolation bug in there somewhere. I'll > take a look. >
According to this site you're pretty close: http://www.bh.com/companions/aerodata/appendices/data-b/default.htm Erik _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
