[Flightgear-devel] making sign of side-slip consistent between fdm (bug 901)

2013-07-29 Thread jean pellotier
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

Re: [Flightgear-devel] making sign of side-slip consistent between fdm (bug 901)

2013-07-29 Thread Jon S. Berndt
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

Re: [Flightgear-devel] making sign of side-slip consistent between fdm (bug 901)

2013-07-29 Thread James Turner
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

Re: [Flightgear-devel] making sign of side-slip consistent betweenfdm (bug 901)

2013-07-29 Thread Alan Teeder
This confusion is common. It arises when people try to visualise the angle beta by simply yawing the aircraft, which they at the same time visualise as flying straight in the original direction. (you get the same condition if you yaw the aircraft in a wind tunnel) In this special case beta

[Flightgear-devel] The latest on Download_and_compile.sh

2013-07-29 Thread Pat
The download_and_compile team clone has been rebuilt as of 1:15 AM Tuesday, July 30, 2013 (UTC) if you cloned it locally, you'll want to move or delete your local clone and get a new one: Get a new clone of the fg-download-and-compile-fgmeta team clone on gitorious: git clone