Tony Peden writes:
> It seems that the recent changes related to the airspeed instrumentation
> have affected the --vc option. If I start with --vc=100, JSBSim gets
> passed 92.885 knots. Including instrumentation error is fine, but I
> have a hard time believing 7 knots of error (relative to calibrated) at
> cruise angles of attack and small sideslip angles.
Here's an excerpt from options.cxx:
} else if ( arg.find( "--vc=" ) == 0) {
fgSetString("/sim/startup/speed-set", "knots");
fgSetDouble("/velocities/airspeed-kt", atof(arg.substr(5)));
And here's one from flight.cxx:
if ( speedset == "knots" || speedset == "KNOTS" ) {
set_V_calibrated_kts( fgGetDouble("/velocities/airspeed-kt") );
Nothing should be interfering with this value from point A to point B.
The new instrumentation code puts indicated values under the
/instrumentation/ property subtree and explicitly does not touch
values under /velocities/ etc. Ditto for the older steam support.
All the best,
David
--
David Megginson, [EMAIL PROTECTED], http://www.megginson.com/
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