Vivian Meazza wrote: > That got me going. Are you trying to calculate the natural log of a > negative number (rpm_norm - 1)? Isn't that a complex number? Did you > mean:
Yes, typo. Sorry. > If you do mean this equation then I can certainly live with that. If > not, I'll need to put my thinking cap on ... I've updated the > graphical representation here: Remind me again which one of these is the "real" engine data, and what the source is? The only line on this graph that has the dropoff seems to be the polynomial you posted. The others (including the linear one) all have better agreement, qualitatively. We can play with other forms too, like c((x+1)^e - 1) (for some e < 1, and with a c that makes the slope through the origin ~ 1). Andy _______________________________________________ Flightgear-devel mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
