[Flightgear-devel] Re: Head tracking (was: Formation Flying)
On Wed, 17 May 2006, Arnt Karlsen wrote: On Tue, 16 May 2006 21:04:57 +0200 (CEST), Anders wrote in message [EMAIL PROTECTED]: On Tue, 16 May 2006, alexander babichev wrote: I finished first version of TrackIR support for FlightGear. There are still many things to do, but it works just fine. One can run TrackIR on Windows computer and FlightGear on Linux box without problems. Hi! Great! If you could post a protocol description ...or... (e.g. the source of the network part) I'll see if I can't implement something similar and hopefully compatible using ARToolkit. ..in principle, these are 2 very different things, legally, such as a specification and source code. If you provides the first, Anders could provide his clean room source code, _without_ needing TrackIR's permission, and legally too. ;o) Yes, that's a good idea, and in this case the code for the receiving end in FG (assuming one is needed) could also be enough - I only need to know what is supposed to be in those packets. Specifications often have the problem that they neither get written nor updated. I thought Alexander wrote the networking code and that he was allowed to distribute it, albeit not licensed under the GPL. Cheers, Anders -- - | Anders Gidenstam | | | Email: anders(at)gidenstam.org | WWW: http://www.gidenstam.org| - --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] sound issue
Dave Culp wrote: On Saturday 13 May 2006 09:20 am, Justin Smithies wrote: This is what i've got but if i operate the speedbrake the sound just runs forever because my speedbrakes in the surface postions never gets to bang on 1 or bang on 0 . speedbrake namespeedbrake/name modein-transit/mode pathSounds/whine.wav/path property/surface-positions/speedbrake-pos-norm/property volume factor0.45/factor /volume /speedbrake It looks like you have the volume set to a constant 0.45. Try puting the property in the volume section. speedbrake namespeedbrake/name modein-transit/mode pathSounds/whine.wav/path volume property/surface-positions/speedbrake-pos-norm/property factor0.45/factor /volume /speedbrake This shouldn't be necessary since he's using the 'in-transit' mode which means the sound will only get played while the value of property is changing. So if the property is 1.0 for two frames the sound will stop. To be honest, I can't find anything wrong in the original section?? Erik -- http://www.ehtw.info (Dutch)Future of Enschede Airport Twente http://www.ehofman.com/fgfs FlightGear Flight Simulator --- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnkkid=120709bid=263057dat=121642 ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Frames of Reference in jsbsim
Dave Culp wrote: But it doesn't. Seems like an oversight to me. I'm trying to model a 'plane with almost no dihedral AFAICS and I'm not sure what to twiddle in the .xml file to get that effect. My advice is don't worry about it. Is there something about the way the Colditz Glider is flying that doesn't seem right? Yeah - it flies too well! It's got almost no dihedral, so I'd expect it to be pretty unstable in roll. Having said that, and though I've never flown anything other than a hang-glider for real, I find the c172 to be rather *too* unstable in roll for my liking. It's not obvious to me (yet) how the effects of dihedral are handled in jsbsim, so it's not easy to experiment with changes in those values. Steve.
Re: [Flightgear-devel] Frames of Reference in jsbsim
The textbook solution for straight wings is that 1 degree of positive dihedral adds approximately .0002 to Cl, the rolling moment coefficient . This would be added to the Clb coefficient in the input file, since it is sideslip that generates the effect. I use an old copy of Perkins and Hage, Airplane Stability and Control to look these things up, when I need to. Rex Steve Hosgood wrote: Dave Culp wrote: But it doesn't. Seems like an oversight to me. I'm trying to model a 'plane with almost no dihedral AFAICS and I'm not sure what to twiddle in the .xml file to get that effect. My advice is don't worry about it. Is there something about the way the Colditz Glider is flying that doesn't seem right? Yeah - it flies too well! It's got almost no dihedral, so I'd expect it to be pretty unstable in roll. Having said that, and though I've never flown anything other than a hang-glider for real, I find the c172 to be rather *too* unstable in roll for my liking. It's not obvious to me (yet) how the effects of dihedral are handled in jsbsim, so it's not easy to experiment with changes in those values. Steve.
