Jonathan Polley wrote: > I think this is more along the lines of my not what is important to > each FDM when it comes to configuration. If I wanted to configure a > Boeing 707 model by modifying a 747 model, what is needed for each > FDM type? When I look in YASim, I see quite a bit of information, > but I don't know what it pertinent.
Well, hopefully all of it is pertinent. I try to avoid meaningless data when possible. :) There's a YASim README file in the base package that would be a good place to start, although I need to audit it and update it for a few syntax changes that have gone in since it was written. Maybe the best thing to do would be to read through that, try tweaking things, and then ask questions? To deal with the 707 example. I would first start with the geometry. Get yourself a 3-view diagram, a ruler and protractor and measure the various numbers that YASim wants. Get these typed in, then just copy over all the property/control stuff from the 747 model. The engines can be copied out of the 747 too, you'll just need to change the thrust. You'll need to find (or guess at) some cruise and approach performance data, for the solver to match. You then try run the model, and deal with syntax errors. Once it actually runs, it's c.g. is going to be wrong (it always is) and the aircraft may try to flop over on its back. So you almost need to add some ballast to move the c.g. somewhere better, typically a little bit ahead of the main landing gear. Once it's flying, you'll need to play with the effectiveness of the control surfaces to get the controlability right. Andy -- Andrew J. Ross NextBus Information Systems Senior Software Engineer Emeryville, CA [EMAIL PROTECTED] http://www.nextbus.com "Men go crazy in conflagrations. They only get better one by one." - Sting (misquoted) _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
