> > Don't waste your time. Others have tried this (including me) for > > years, with quite a few manufacturers. There are a number of reasons > > why aircraft data are not released. > > ..this is a both a legal and a cultural thing; in the US, I understand > the prudent thing to do is assume a lawsuit bait and just say "No." > > ..also keep in mind people are more likely to say no to some unknown > wannabe.org than to a known honorable.org. So we first need to earn > that reputation and, meanwhile, ask favors as individuals. > > ..Boris has found a way that works, when he asks. Stick to it, Boris, > make no changes for as long as it works, please. ;-)
For aircraft performance specs - that stuff is generally available on the web, or in books. For specific information, such as aerodynamic stability derivatives - that stuff is _not_ generally available and is in fact generally packaged and _sold_ for great amounts of cash, along with a promise not to release the proprietary data. I don't believe there is anything related to performance and dynamics that is in the POH that would be off-limits. That stuff is (I would think) more procedures and systems operation. Flight dynamics can be derived from publicly available sources, manufacturer's web sites, and aerodynamics textbooks (see the summer 2004 JSBSim Newsletter, "Back of the Envelope", at www.jsbsim.org). Much of the more detailed aerodynamic characteristics fall out of analysis of the basic, published performance data, or can be guessed at initially from data published for other similar aircraft types, or a tool such as DATCOM+ can be used to derive more realistic aerodynamic properties (see the current JSBSim Newsletter - October). From that point, the values can be tweaked until the modeler is happy. The Flight Control system is more complex. Properly modeling the flight control system is where things ca get tricky. Flight modeling is art and science. Jon _______________________________________________ Flightgear-users mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-users 2f585eeea02e2c79d7b1d8c4963bae2d
