> Date: Tue, 18 Dec 2007 23:40:15 +0100> From: [EMAIL PROTECTED]> To:
> flightgear-devel@lists.sourceforge.net> Subject: Re: [Flightgear-devel]
> Pushback> > Hi Gijs,> Gijs de Rooy schrieb am 18.12.2007 22:09:> > Hi folks,>
> > > > I did a lot of work last week on a pushback truck model.> > The model
> is done, the steering is working (could be better)> > but we still need the
> possibility to push/pull planes.> > > > Please see the forum page for some
> more info and screens and a> > download link:
> http://www.flightgear.org/forums/viewtopic.php?t=734> >> > I think this
> option is possible with the aerotow function. I can't> > do it myself, so I
> would ask if there's somebody who'd like to> > help me with this. Please
> contact me.> Yes, in principle it is possible with the aerotow feature. The
> only > problem is, that due to the time lag of the MP protocol, some
> elasticity > of the tow is needed. With a 60m tow this is possible without
> looking > unrealistic, but we should try to to that with the existing code.>
> > 1.) Copy the aerotow part of the fdms .xml file and of the -set.xml file >
> of an glider (bocian or ask21) to the airliner, the position should be > the
> nose wheel.> 2.) Copy the aerotow part of the dhc2w (.xml and -set.xml) to
> the truck. > The position should be the end of the push-bar.> 3.) Change the
> parameters of the tow length (length, min-tow-length and >
> initial-tow-length: much shorter, maybe 5m) and increase the > break-force.
> Maybe you need to modify the elasticity (elastic-constant).> (these
> parameters need only to be changed at the airliner; the tow truck > will copy
> these values automatically)> If I remember correctly, the airliner will use
> the center of the tow > truck for calculating the distance (and the forces).
> With 60m tow you > would not see a difference, but for the push-truck this
> could be > visible. On the other hand, we maybe need this distance between
> the > truck center and the end of the the push bar for the elasticity. Just >
> try it as it is and if it works, but the distance between truck and the >
> airliners front gear can not be adjusted by modifying the elasticity and >
> tow length, then you need to shift the truck center a bit.> >
I've tried it, but it didn't worked. I think i've done something wrong.
Could you please copy the needed lines and paste them in a email?
Thanks,
Gijs
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