Hi Lee,

Am Montag, den 02.07.2007, 15:57 +0100 schrieb leee:
> While YASim is a very good fdm, imo (and I've done a few in my time), it 
> isn't 
> suited to accurately portraying a glider because the 'cruise' definitions 
> don't apply.  The cruise section assumes level flight and needs to know the 
> power required to maintain that level flight for it to work correctly.
> 
that was true some months ago, but since early this year (when Maik
improved the ground handling and introduced the towing capability) there
is no need for a YaSim engine anymore. Instead you can specify for
"cruise" and "approach" a glide-angle and comletely omit the engine
definition.

Greetings

Detlef

> Doing a powered glider in YASim would be fine, provided that the propeller 
> isn't retracted when not in use (I believe some motor-gliders are able to do 
> this) 
> because the drag etc. effects from the prop will also be taken into 
> consideration by YASim.
> 
> Apart from the heli developments, there has been no hint of YASim being 
> adapted to work with unpowered or tailless/elevatorless aircraft so it looks 
> like you'll either have to use JSBSim or UIUC if you want any real accuracy 
> for these types of aircraft.
> 
> LeeE
> 
> On Monday 02 July 2007 09:24, Heiko Schulz wrote:
> > Hi,
> >
> > At first thanks for uploading and correcting the
> > error.
> >
> > How is the behaviour of a glider in flight?
> > If YASim is a good fdm, it should simulate the
> > behaviour with the right data correct.
> >
> > I see more problems in the simulating of the
> > enviroment like thermals, turbulences, wind etc....
> >
> > Greetings
> > HHS
> >
> > --- Martin Spott <[EMAIL PROTECTED]> schrieb:
> > > Detlef Faber wrote:
> > > > Am Montag, den 02.07.2007, 00:43 +0000 schrieb
> > >
> > > Martin Spott:
> > > > > The in-flight behaviour of the YASim FDM is,
> > >
> > > similar to that of the
> > >
> > > > > 'Bocian', extremely 'direct' and unforgiving. As
> > >
> > > an alternative you
> > >
> > > > > might do better by using a derivative of the
> > >
> > > JSBsim FDM as used in the
> > >
> > > > > Schweizer,
> > > >
> > > > ... and loose capabilities like aerotow and winch
> > >
> > > starts?
> > >
> > > Well, the model rellay looks excellent and the
> > > Bocian does as well
> > > (man, 13 MBytes of textures for that one  ;-)  but I
> > > don't think
> > > that any of these two behaves like a glider. So this
> > > is some sort of a
> > > "choose your poison"  :-)  situation as the
> > > Schweizer _does_ behave
> > > reasonable,
> > >
> > >   Martin.
> > > --
> > >  Unix _IS_ user friendly - it's just selective about
> > > who its friends are !
> >
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