Re: [Flightgear-devel] Pushback
Hello Maik, Am Samstag, den 12.01.2008, 23:49 +0100 schrieb Maik Justus: > Hi Gijs, > a few days ago Jester, simstick and me tried to get the pushback > working > over the MP-protocol. In principle it worked. But the problem is the > time lag between th different users. To avoid ugly oscillations it was > necessary to use a very elastic junction between pushbak und 787, which > looks (and is) very unrealistic. I think many users would rate this as a > bug. At aerotow the elastic tow is not so noticeable. > > I think for simulating pushback (or skydiver; anything where a > non-elastic junction is needed), we need another concept. The "FDM" of > the airliner in pushback (or the FMD of the skydiver while lifting) need > to be switched off and the the pushback (or of the jump-plane) need to > do all the simulation. Therefore we need to set position and orientation > of another aircraft over the MP-protocol instead of transmitting > forces. For the skydiver nearly anything is there. We just need one > Nasal listener on the skydiver side, which listens for setting > position/orientation/speed by the FDM and overwrites this with the > values (+ offset) of the jump-plane. This is very interesting. I've recently done some work on "detaching" a view from the aircraft/vehicle to have a kind of passenger walk inside the aircraft (which is already possible in the Albatross) and on the ground while the Aircraft is somewhere else. Some of that nasal code could be reused for a skydiver which has to walk to the door prior to jumping (and of course walk on the ground if he missed the landing zone ;-) ). Who is working on the skydiver? I think we have some ideas to share. On the far end, this would enable us to load any vehicle/human model into aircraft that offer the capacity to carry anything. > And we need something similar at > the jump-plane to set the position of the skydiver inside the jump-plane > (without the skydiver would follow the jump plane in some distance (due > to the time lag)). > For the pushback we need something similar. Additionally the pushback > need to know the gear positions of the airliner to simulate it properly. > But all this should be possible in Nasal. > Best regards, > Maik > > > Gijs de Rooy schrieb am 21.12.2007 16:06: > > Ok, let's try the 787-8 than. > > > > > > > > Gijs > > > > > > > > ------------ > > > Date: Fri, 21 Dec 2007 15:54:41 +0100 > > > From: [EMAIL PROTECTED] > > > To: flightgear-devel@lists.sourceforge.net > > > Subject: Re: [Flightgear-devel] Pushback > > > > > > 787-8 > > > --- Gijs de Rooy <[EMAIL PROTECTED]> schrieb: > > > > > > > > The 737 is JSBSim - it only works with YASim.> > > > > > HHS> > still in work: > > > > http://www.hoerbird.net/galerie.html> But already > > > > done: http://www.hoerbird.net/reisen.html > > > > > > > > > > > > > > > > > > > > Well, what aircraft do you recommend? > > > > > > > _ > > > > Bekijk Yes-R's real life soap op MSN Video! > > > > > > > > > http://video.msn.com/video.aspx?mkt=nl-nl&tab=m1192527562294&vid=8aff5b76-b78d-4b55-8b64-ef7e1d73aab2&playlist=videoByUuids:uuids:50b732c2-c105-41e9-adf0-36bd627d4eaa,0813da8c-031b-423f-a79d-35d925aee805,5cce447e-948d-43af-9862-45bb6bb9d6d8,6a39138c-f562-4254-be70-9d93343650f8,f9b8d78f-05a4-4c74-8e4b-28d20a4037ab&from=NLNL_Yes-R> > > > > > - > > > > This SF.net email is sponsored by: Microsoft > > > > Defy all challenges. Microsoft(R) Visual Studio > > > > 2005. > > > > > > > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/> > > > ___ > > > > Flightgear-devel mailing list > > > > Flightgear-devel@lists.sourceforge.net > > > > > > > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > > > > > > > > > > > > > still in work: http://www.hoerbird.net/galerie.html > > > But already done: http://www.hoerbird.net/reisen.html > > > > > > > > > __ Ihr erstes Fernweh? Wo gibt es > > den schönsten Strand? www
Re: [Flightgear-devel] Pushback
Am Samstag 12 Januar 2008 schrieb Maik Justus: > ...[MP FDM override]... > For the pushback we need something similar. Additionally the pushback > need to know the gear positions of the airliner to simulate it properly. > But all this should be possible in Nasal. I'd like to see the "Slave FDM" implemented in C++, as I can see connections to the AI system (AIModel). Being able to reuse your code allows for push back of AI airliners (i.e. not only the MP ones), as well as proper user aircraft pushback in single player scenarios (with AI pushback trucks). Thomas - Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Pushback
Ah, thanks for your work! It's nice to hear someone's working on it. I've tried to get the pushback work yesterday and I find out that it needs a lot of power (even when towing a light bocian). But if I increase power (in the code) the pushback races when there's no plane behind. So I think (no, I know) I can't do the nasal stuff myself. It would be great if you (or someone else) will do that. Regards, Gijs > Date: Sat, 12 Jan 2008 23:49:37 +0100> From: [EMAIL PROTECTED]> To: > flightgear-devel@lists.sourceforge.net> Subject: Re: [Flightgear-devel] > Pushback> > Hi Gijs,> a few days ago Jester, simstick and me tried to get the > pushback working > over the MP-protocol. In principle it worked. But the > problem is the > time lag between th different users. To avoid ugly > oscillations it was > necessary to use a very elastic junction between > pushbak und 787, which > looks (and is) very unrealistic. I think many users > would rate this as a > bug. At aerotow the elastic tow is not so noticeable.> > > I think for simulating pushback (or skydiver; anything where a > > non-elastic junction is needed), we need another concept. The "FDM" of > the > airliner in pushback (or the FMD of the skydiver while lifting) need > to be > switched off and the the pushback (or of the jump-plane) need to > do all the > simulation. Therefore we need to set position and orientation > of another > aircraft over the MP-protocol instead of transmitting > forces. For the > skydiver nearly anything is there. We just need one > Nasal listener on the > skydiver side, which listens for setting > position/orientation/speed by the > FDM and overwrites this with the > values (+ offset) of the jump-plane. And > we need something similar at > the jump-plane to set the position of the > skydiver inside the jump-plane > (without the skydiver would follow the jump > plane in some distance (due > to the time lag)).> For the pushback we need > something similar. Additionally the pushback > need to know the gear > positions of the airliner to simulate it properly. > But all this should be > possible in Nasal.> > Best regards,> Maik _ Bekijk Yes-R's real life soap op MSN Video! http://video.msn.com/video.aspx?mkt=nl-nl&tab=m1192527562294&vid=8aff5b76-b78d-4b55-8b64-ef7e1d73aab2&playlist=videoByUuids:uuids:50b732c2-c105-41e9-adf0-36bd627d4eaa,0813da8c-031b-423f-a79d-35d925aee805,5cce447e-948d-43af-9862-45bb6bb9d6d8,6a39138c-f562-4254-be70-9d93343650f8,f9b8d78f-05a4-4c74-8e4b-28d20a4037ab&from=NLNL_Yes-R- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Pushback
Hi Gijs, a few days ago Jester, simstick and me tried to get the pushback working over the MP-protocol. In principle it worked. But the problem is the time lag between th different users. To avoid ugly oscillations it was necessary to use a very elastic junction between pushbak und 787, which looks (and is) very unrealistic. I think many users would rate this as a bug. At aerotow the elastic tow is not so noticeable. I think for simulating pushback (or skydiver; anything where a non-elastic junction is needed), we need another concept. The "FDM" of the airliner in pushback (or the FMD of the skydiver while lifting) need to be switched off and the the pushback (or of the jump-plane) need to do all the simulation. Therefore we need to set position and orientation of another aircraft over the MP-protocol instead of transmitting forces. For the skydiver nearly anything is there. We just need one Nasal listener on the skydiver side, which listens for setting position/orientation/speed by the FDM and overwrites this with the values (+ offset) of the jump-plane. And we need something similar at the jump-plane to set the position of the skydiver inside the jump-plane (without the skydiver would follow the jump plane in some distance (due to the time lag)). For the pushback we need something similar. Additionally the pushback need to know the gear positions of the airliner to simulate it properly. But all this should be possible in Nasal. Best regards, Maik Gijs de Rooy schrieb am 21.12.2007 16:06: > Ok, let's try the 787-8 than. > > > > Gijs > > > > > > Date: Fri, 21 Dec 2007 15:54:41 +0100 > > From: [EMAIL PROTECTED] > > To: flightgear-devel@lists.sourceforge.net > > Subject: Re: [Flightgear-devel] Pushback > > > > 787-8 > > --- Gijs de Rooy <[EMAIL PROTECTED]> schrieb: > > > > > > The 737 is JSBSim - it only works with YASim.> > > > > HHS> > still in work: > > > http://www.hoerbird.net/galerie.html> But already > > > done: http://www.hoerbird.net/reisen.html > > > > > > > > > > > > > > > Well, what aircraft do you recommend? > > > > > _ > > > Bekijk Yes-R's real life soap op MSN Video! > > > > > > http://video.msn.com/video.aspx?mkt=nl-nl&tab=m1192527562294&vid=8aff5b76-b78d-4b55-8b64-ef7e1d73aab2&playlist=videoByUuids:uuids:50b732c2-c105-41e9-adf0-36bd627d4eaa,0813da8c-031b-423f-a79d-35d925aee805,5cce447e-948d-43af-9862-45bb6bb9d6d8,6a39138c-f562-4254-be70-9d93343650f8,f9b8d78f-05a4-4c74-8e4b-28d20a4037ab&from=NLNL_Yes-R> > > > - > > > This SF.net email is sponsored by: Microsoft > > > Defy all challenges. Microsoft(R) Visual Studio > > > 2005. > > > > > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/> > > ___ > > > Flightgear-devel mailing list > > > Flightgear-devel@lists.sourceforge.net > > > > > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > > > > > > > > > still in work: http://www.hoerbird.net/galerie.html > > But already done: http://www.hoerbird.net/reisen.html > > > > > > __ Ihr erstes Fernweh? Wo gibt es > den schönsten Strand? www.yahoo.de/clever > > > > > - > > This SF.net email is sponsored by: Microsoft > > Defy all challenges. Microsoft(R) Visual Studio 2005. > > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ > > ___ > > Flightgear-devel mailing list > > Flightgear-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > > > Plan je evenement, nodig mensen uit en deel je foto's met Windows Live > Events <http://events.live.com> > > > - > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ > > > ___ > Flightgear-devel mailing list > Flightgear-devel@lis
Re: [Flightgear-devel] Pushback
Ok, let's try the 787-8 than. Gijs > Date: Fri, 21 Dec 2007 15:54:41 +0100> From: [EMAIL PROTECTED]> To: > flightgear-devel@lists.sourceforge.net> Subject: Re: [Flightgear-devel] > Pushback> > 787-8> --- Gijs de Rooy <[EMAIL PROTECTED]> schrieb:> > > > The > 737 is JSBSim - it only works with YASim.> >> > HHS> > still in work:> > > http://www.hoerbird.net/galerie.html> But already> > done: > http://www.hoerbird.net/reisen.html> > > > > > > > > > Well, what aircraft do > you recommend?> >> > _> > Bekijk > Yes-R's real life soap op MSN Video!> >> > http://video.msn.com/video.aspx?mkt=nl-nl&tab=m1192527562294&vid=8aff5b76-b78d-4b55-8b64-ef7e1d73aab2&playlist=videoByUuids:uuids:50b732c2-c105-41e9-adf0-36bd627d4eaa,0813da8c-031b-423f-a79d-35d925aee805,5cce447e-948d-43af-9862-45bb6bb9d6d8,6a39138c-f562-4254-be70-9d93343650f8,f9b8d78f-05a4-4c74-8e4b-28d20a4037ab&from=NLNL_Yes-R>> > -> > > This SF.net email is sponsored by: Microsoft> > Defy all challenges. > Microsoft(R) Visual Studio> > 2005.> >> > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/>> > ___> > Flightgear-devel mailing > list> > Flightgear-devel@lists.sourceforge.net> >> > https://lists.sourceforge.net/lists/listinfo/flightgear-devel> > > > > still > in work: http://www.hoerbird.net/galerie.html> But already done: > http://www.hoerbird.net/reisen.html> > > __ > Ihr erstes Fernweh? Wo gibt es den schönsten Strand? www.yahoo.de/clever> > > -> > This SF.net email is sponsored by: Microsoft> Defy all challenges. > Microsoft(R) Visual Studio 2005.> > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/> > ___> Flightgear-devel mailing > list> Flightgear-devel@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/flightgear-devel _ De mooiste afbeeldingen van Angelina Jolie vind je met Live Search http://search.live.com/images/results.aspx?q=angelina%20jolie&FORM=MIINTM- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Pushback
787-8 --- Gijs de Rooy <[EMAIL PROTECTED]> schrieb: > > The 737 is JSBSim - it only works with YASim.> > > HHS> > still in work: > http://www.hoerbird.net/galerie.html> But already > done: http://www.hoerbird.net/reisen.html > > > > > Well, what aircraft do you recommend? > _ > Bekijk Yes-R's real life soap op MSN Video! > http://video.msn.com/video.aspx?mkt=nl-nl&tab=m1192527562294&vid=8aff5b76-b78d-4b55-8b64-ef7e1d73aab2&playlist=videoByUuids:uuids:50b732c2-c105-41e9-adf0-36bd627d4eaa,0813da8c-031b-423f-a79d-35d925aee805,5cce447e-948d-43af-9862-45bb6bb9d6d8,6a39138c-f562-4254-be70-9d93343650f8,f9b8d78f-05a4-4c74-8e4b-28d20a4037ab&from=NLNL_Yes-R> - > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio > 2005. > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/> ___ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > still in work: http://www.hoerbird.net/galerie.html But already done: http://www.hoerbird.net/reisen.html __ Ihr erstes Fernweh? Wo gibt es den schönsten Strand? www.yahoo.de/clever - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Pushback
> The 737 is JSBSim - it only works with YASim.> > HHS> > still in work: > http://www.hoerbird.net/galerie.html> But already done: > http://www.hoerbird.net/reisen.html Well, what aircraft do you recommend? _ Bekijk Yes-R's real life soap op MSN Video! http://video.msn.com/video.aspx?mkt=nl-nl&tab=m1192527562294&vid=8aff5b76-b78d-4b55-8b64-ef7e1d73aab2&playlist=videoByUuids:uuids:50b732c2-c105-41e9-adf0-36bd627d4eaa,0813da8c-031b-423f-a79d-35d925aee805,5cce447e-948d-43af-9862-45bb6bb9d6d8,6a39138c-f562-4254-be70-9d93343650f8,f9b8d78f-05a4-4c74-8e4b-28d20a4037ab&from=NLNL_Yes-R- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Pushback
--- Gijs de Rooy <[EMAIL PROTECTED]> schrieb: > Well, I need to modify the pushback as well i think? > But let's start with the Boeing 737 aircraft. > > Gijs > The 737 is JSBSim - it only works with YASim. HHS still in work: http://www.hoerbird.net/galerie.html But already done: http://www.hoerbird.net/reisen.html __ Ihr erstes Fernweh? Wo gibt es den schönsten Strand? www.yahoo.de/clever - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Pushback
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: [EMAIL PROTECTED]> To: > flightgear-devel@lists.sourceforge.net> 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 have 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> > > > 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> >> >> > > > > > Blijf onderweg online met Windows Live for Mobile! Download 't nu op > > jouw > mobiele telefoon. <http://www.windowslivemobile.msn.com/nl/%20>> > > > >> > > -> > > This SF.net email is sponsored by: Microsoft> > Defy all challenges. > Microsoft(R) Visual Studio 2005.> > > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/> > > > >> > > ___> > Flightgear-devel mailing > list> > Flightgear-devel@lists.sourceforge.net> > > https://lists.sourceforge.net/lists/listinfo/flightgear-de
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 have 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 > > 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 > > > > Blijf onderweg online met Windows Live for Mobile! Download 't nu op > jouw mobiele telefoon. <http://www.windowslivemobile.msn.com/nl/%20> > > > - > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ > > > ___ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/ ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Pushback
> 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 _ Probeer Live Search: de zoekmachine van de makers van MSN! http://www.live.com/?searchOnly=true- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse012070mrt/direct/01/___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
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. > > Some of the things I think we need: > * The pilot of the aircraft has to accept the pushback to push the plane. The same as we have in aerotow. The glider pilot connects ... > * The pilot should be allowed to disconnect at any time. and disconnects (the dhc2w pilot can only disconnect). > * There should be an chat interface between the pilot and the pushback > truck driver. > > That last one is already possible with the new version. > > Cheers, > > Gijs > > Regards, Maik - SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
[Flightgear-devel] Pushback
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. Some of the things I think we need: * The pilot of the aircraft has to accept the pushback to push the plane. * The pilot should be allowed to disconnect at any time. * There should be an chat interface between the pilot and the pushback truck driver. That last one is already possible with the new version. Cheers, Gijs _ Download Messenger op je mobiel! http://www.windowslivemobile.msn.com/nl/ - SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
