Re: [Flightgear-devel] Aerial photos
Tony Peden writes: > On Mon, 2002-11-04 at 11:15, Jon S Berndt wrote: > > On Mon, 4 Nov 2002 14:03:19 -0500 > > David Megginson <[EMAIL PROTECTED]> wrote: > > > > > >A while ago,we had a hard-coded balloon model. I don't > > >think it works > > >any more, but now that we have wind and weather, it would > > >be nice to > > >whip one together in YASim or JSBSim if they can support > > >it. I could > > >do a bit of work on a 3D model. > > > > I've thought about this a *little*. It would involve > > adding bouyancy forces, and perhaps suction/inertia kinds > > of effects. Haven't really gone past that. > > I think we could do a decent job of it with just a drag coefficient > and a propulsion model that took care of the burner and buoyancy. I believe everything is in place for a decent balloon model it just needs someone to hook in the horizontal forces < wind > details for doing this @ http://seneca.me.umn.edu/pipermail/flightgear-devel/2002-January/002677.html Norman ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Aerial photos
David Megginson wrote: > > Erik Hofman writes: > > > I've always wanted to take a ride in a hot air balloon myself, but > > haven't done it yet. Good to hear it's a great experience. > > A while ago,we had a hard-coded balloon model. I don't think it works > any more, but now that we have wind and weather, it would be nice to > whip one together in YASim or JSBSim if they can support it. I could > do a bit of work on a 3D model. MY balloon model is still there and should still work - with the same limitation it had from the beginning: it can only move up and down. Moving sidewards (e.g. due to wind) is possible and the direction and amount is calculated, but I don't know the correct API calls to convert the linear movement to a change in lat/lon. It also has the "problem" that it's hardwired to the WeatherCM code. But it should be easy to replace the calls to WeatherCM with property lookups. CU, Christian -- The idea is to die young as late as possible.-- Ashley Montague ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Aerial photos
On Mon, 4 Nov 2002 14:03:19 -0500 David Megginson <[EMAIL PROTECTED]> wrote: A while ago,we had a hard-coded balloon model. I don't think it works any more, but now that we have wind and weather, it would be nice to whip one together in YASim or JSBSim if they can support it. I could do a bit of work on a 3D model. I've thought about this a *little*. It would involve adding bouyancy forces, and perhaps suction/inertia kinds of effects. Haven't really gone past that. Jon ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Aerial photos
Erik Hofman writes: > I've always wanted to take a ride in a hot air balloon myself, but > haven't done it yet. Good to hear it's a great experience. A while ago,we had a hard-coded balloon model. I don't think it works any more, but now that we have wind and weather, it would be nice to whip one together in YASim or JSBSim if they can support it. I could do a bit of work on a 3D model. We have a lot of balloon traffic around Ottawa; amazingly, they let them drift right through the Class C (= U.S. class B, I think) control zone around and over CYOW. All the best, David -- David Megginson, [EMAIL PROTECTED], http://www.megginson.com/ ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
Re: [Flightgear-devel] Aerial photos
Hello Richard, Sorry for the long delay, but I've been bussy creating new runway textures, and that took more time than I had hoped. I had the good fortune to be given a flight in a hot air balloon for Christmas last year. I finally got around to arranging the flight last month (The outbreak of Foot and Mouth disease had grounded all ballooning in the north eats of England until May this year, and then the weather was non-cooperative) and took some straight down pictures of the ground with the intention of making some textures. I have discovered that I am not, and will never be, a texture artist :-(, however I hereby offer the images to the project for any use that is beneficial to the project. I'm sorry to day that the photos aren't of much help for using them in the textures itself (they aren't actually 90 degrees downwards) but these type of photos prove to be a great help in designing textures (to get actual colour and layout). See http://sucs.org/~mocelet/fgfs/ for thumbnails and links to the big pictures. Thanks for the pictures. Having experienced flights in commercial, GA, glider and now balloon I can say that ballooning is a completely different experience to all other types of flying. For one thing there is no airflow past the aircraft for the majority of the flight. I've always wanted to take a ride in a hot air balloon myself, but haven't done it yet. Good to hear it's a great experience. Erik ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
[Flightgear-devel] Aerial photos
I had the good fortune to be given a flight in a hot air balloon for Christmas last year. I finally got around to arranging the flight last month (The outbreak of Foot and Mouth disease had grounded all ballooning in the north eats of England until May this year, and then the weather was non-cooperative) and took some straight down pictures of the ground with the intention of making some textures. I have discovered that I am not, and will never be, a texture artist :-(, however I hereby offer the images to the project for any use that is beneficial to the project. See http://sucs.org/~mocelet/fgfs/ for thumbnails and links to the big pictures. All images are from between 500' and 1500' AGL, the livestock are mainly sheep, this may help get a sense of scale. The flight was in the North East of England from Allensford (http://www.streetmap.co.uk/streetmap.dll?G2M?X=407500&Y=550500&A=Y&Z=3) to Hamsterley Mill (http://www.streetmap.co.uk/streetmap.dll?G2M?X=413995&Y=556685&A=Y&Z=3). Having experienced flights in commercial, GA, glider and now balloon I can say that ballooning is a completely different experience to all other types of flying. For one thing there is no airflow past the aircraft for the majority of the flight. Apologies for the jpeg format (yes I have read Steve Baker's diatribe on lossy compression for textures), I can probably arrange rescanning in a lossless format if needed. Richard Bytheway ___ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
