Re: [Flightgear-devel] Pushback

[Gijs de R. <gij...@ho...>]

Well, I need to modify the pushback as well i think?
But let's start with the Boeing 737 aircraft.

Gijs

> Date: Fri, 21 Dec 2007 14:45:42 +0100> From: mj...@gm...> To: flightge=
ar-...@li...> Subject: Re: [Flightgear-devel] Pushback> >=
 Hi Gijs,> > which airliner (with YASim FDM) you want to modify? I will try=
 to modify > the files. (I am on a X-mas tour, therefore I will probably ha=
ve no > time before end of the month.)> > Maik> > > > Gijs de Rooy schrieb =
am 21.12.2007 12:55:> >> > > Date: Tue, 18 Dec 2007 23:40:15 +0100> > > Fro=
m: mj...@gm...> > > To: fli...@li...> > > Subj=
ect: Re: [Flightgear-devel] Pushback> > >> > > Hi Gijs,> > > Gijs de Rooy s=
chrieb am 18.12.2007 22:09:> > > > Hi folks,> > > >> > > > I did a lot of w=
ork last week on a pushback truck model.> > > > The model is done, the stee=
ring 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/foru=
ms/viewtopic.php?t=3D734> > > >> > > > 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> > > p=
roblem 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 o=
f the push-bar.> > > 3.) Change the parameters of the tow length (length, m=
in-tow-length and> > > initial-tow-length: much shorter, maybe 5m) and incr=
ease 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 rem=
ember 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 th=
e 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 fron=
t gear can not be adjusted by modifying the elasticity > > and> > > tow len=
gth, then you need to shift the truck center a bit.> > > >> >> > ----------=
--------------------------------------------------------------> >> > I've t=
ried it, but it didn't worked. I think i've done something wrong.> >> > Cou=
ld you please copy the needed lines and paste them in a email?> >> > > >> >=
 Thanks,> >> > Gijs> >> >> > ----------------------------------------------=
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