On Montag, 5. April 2004 14:10, Jim Wilson wrote:
> Mathias FrÃhlich said:
> > On Montag, 5. April 2004 05:30, Jim Wilson wrote:
> > > > We should also pick a coordinate origin to report it relative to. If
> > > > JSBSim is using the (moving) c.g., then we're both bugged. :)
> > >
> > > Umm...I think it's all the same isn't it? It isn't like the ground is
> > > going to move under the FDM's altitude. Well maybe in the area around
> > > KSFO it could. But we could move that code to the FGEarthQuake class.
> > > :-)
> >
> > No it is not. Depending on the locations of the tanks and how much fuel
> > they will carry the agl will change in this case...
> > Andy is totaly right.
>
> I may be a little slow (monday morning here), but that does not tell me
> anything. We are talking about agl not the center of gravity. Is that the
> confusion?
Hmm, I don't think so.
But the center of gravity is not fixed within the aircraft. So if there is a
heavy fuel tank below the fuselage forexample, the center of gravity might be
a few inches lower than when the tank is dropped. Since the altitude/agl
currently used is the altitude/agl of the center of gravity the altitude/agl
changes with the aircrafts mass distribution. And this is not an effect of
the gear springs here.
Greetings
Mathias
--
Mathias FrÃhlich, email: [EMAIL PROTECTED]
_______________________________________________
Flightgear-devel mailing list
[EMAIL PROTECTED]
http://mail.flightgear.org/mailman/listinfo/flightgear-devel
