Andy Ross > > Lee Elliott wrote: > > 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. > > If you really want to get fancy, you can simulate funny surfaces > piecewise using extra vstab objects. But in practice, that's very > unlikely to be useful. > > YASim isn't a fluid dynamics simulator, which is basically required > for turning details like wing planform or airfoil shapes into actual > performance data. And in practice that kind of shape data needs to be > far (!) more accurate than a typical 3D model polygon mesh. If you > have the software and the micro-detailed mesh, then that's clearly the > way to go. But for interactive flight simulation, it's just a > non-starter. > > In principle (modulo bugs and configuration glitches, obviously) a > well-configured YASim model generates aerodynamic results that are > about as good as you can get without access to the original design > plans or test data. >
I would second that, and add that where test data is available, it's surprising how close you can get with YASim. Regards, Vivian _______________________________________________ Flightgear-users mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-users 2f585eeea02e2c79d7b1d8c4963bae2d
