On Monday 20 Jun 2005 20:34, Josh Babcock wrote: > Lee Elliott wrote: > > On Monday 20 Jun 2005 05:26, Andy Ross wrote: > >>Josh Babcock wrote: > >>>I'm not sure how well YASim and JSBsim do transonics and > >>>supersonics. I think you could do a V-tail in JSBsim > >>> though. Not sure though. > >> > >>YASim doesn't currently have good support for high > >> supersonic aircraft; both the engine models and the > >> aerodynamics would need a few hacks. > >> > >>You can do a V tail, though. Give the hstab a big dihedral, > >>and add a split input to model the "rudder" control hookups. > >> > >> > >>Andy > > > > To Josh: have a look at the YF-23 for V-tail stuff. > > > > Regarding authentic panels & cockpits - I'd be delighted if > > anyone wants to do real ones for any of the a/c I've done. > > > > I guess I'm more interested in the flight characteristics of > > various aircraft than actually flying them. > > > > I'd be very interested to see a B-36 and a B-47 - they're > > both in the 'very-unlikely-to-ever-happen' section of the > > list of a/c I'd like to do. > > > > LeeE > > > > _______________________________________________ > > Flightgear-users mailing list > > [email protected] > > http://mail.flightgear.org/mailman/listinfo/flightgear-users > > 2f585eeea02e2c79d7b1d8c4963bae2d > > Well, conveniently I love realistic FDMs, but do not consider > generating them fun.
I rather enjoy working on the fdm configs and it can be frustrating at times but it's also very rewarding when it comes together. > Tell me which of your planes you would > like to see improved. Ah - an easy question ;) All of them:))) There are some specific things I want to sort out on some of them and complete overhauls on others. Don't have the time though and I want to keep my modelling skills up (one of those use it or loose skills imo) so that means doing new a/c (next prob a MiG-15 then an SU-27K) > Also, feel absolutely free to develop a > B-29 YASim config. The existing one does not even pretend to > be realistic. > > Josh My approach to doing a YASim fdm config is to work from the 3d model when getting all your geometry data. This may not mean that the numbers are 100% accurate but they will be consistent with each other and in practice I think that the degree of variation from reality is less significant than the inaccuracies imposed by the constraints in YASim. This isn't intended as a knock at YASim at all - I like it a lot - but consider the Handly Page Victor, which had cresent shaped wimgs, for example, or the rounded wing tips on the B-29 for that matter. What you can do in YASim though is to tune it so that you can get close to the correct effect. Once I've done the geometry I plug in any hard factual data I've got e.g. wing incidence, dihedral etc. The rest is semi-educated guess-work and tuning 'till it seems to work right. I'll certainly have a look at the B-29 when you release it. LeeE _______________________________________________ Flightgear-users mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-users 2f585eeea02e2c79d7b1d8c4963bae2d
