[Flightgear-devel] making sign of side-slip consistent between fdm (bug 901)
hi there, following this bug report: http://code.google.com/p/flightgear-bugs/issues/detail?id=901 it appears that orientation/side-slip-deg and side-slip-rad don't have the same sign, depending if it's a yasim or a jsbsim plane. is there a commonly adopted convention for this property? if not, shouldn't we document somewhere the meaning of the different fdm properties present in fg tree, to avoid such problems in the future ? jano -- See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831iu=/4140/ostg.clktrk ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] making sign of side-slip consistent between fdm (bug 901)
As in this image: http://dodlithr.blogspot.com/2011/09/airplanes-stability-axis.html Beta is positive when the wind hits the right side of the vehicle. This is the only standard convention I have ever seen. I would recommend strongly against artificially changing the sign of this parameter as output from JSBSim. Jon -Original Message- From: jean pellotier [mailto:jean.pellot...@wanadoo.fr] Sent: Monday, July 29, 2013 6:27 AM To: FlightGear developers discussions Subject: [Flightgear-devel] making sign of side-slip consistent between fdm (bug 901) hi there, following this bug report: http://code.google.com/p/flightgear-bugs/issues/detail?id=901 it appears that orientation/side-slip-deg and side-slip-rad don't have the same sign, depending if it's a yasim or a jsbsim plane. is there a commonly adopted convention for this property? if not, shouldn't we document somewhere the meaning of the different fdm properties present in fg tree, to avoid such problems in the future ? jano --- --- See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831iu=/4140/ostg.cl ktrk ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel -- See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831iu=/4140/ostg.clktrk ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] making sign of side-slip consistent between fdm (bug 901)
On 29 Jul 2013, at 13:54, Jon S. Berndt jonsber...@comcast.net wrote: Beta is positive when the wind hits the right side of the vehicle. This is the only standard convention I have ever seen. I would recommend strongly against artificially changing the sign of this parameter as output from JSBSim. Which raises the question, why does Yasim use the opposite sign? Does it use the opposite sign for Beta too? James -- See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831iu=/4140/ostg.clktrk___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
