Re: [Flightgear-devel] YASIM Comment (was New aircraft: SF-25)

2011-08-19 Thread Bertrand Coconnier
Hi Ron, 2011/8/16 Ron Jensen w...@jentronics.com: I took a look at the YASim solver today, first comparing the Inertial tensor with the inertias coming out of aeromatic. Not too far apart, but the 2 yasim aircraft I looked at were both 50% higher than the aeromatic numbers. Then I took a

Re: [Flightgear-devel] YASIM Comment (was New aircraft: SF-25)

2011-08-16 Thread Viktor Radnai
Hi Adrian, On 08/16/2011 12:46 PM, Adrian Musceac wrote: Viktor, During the long hours which have been spent by Emilian and I tweaking the IAR80 FDM, I have found out that three tag parameters have a very heavy influence on the solver: [approach aoa= glide-angle=] and [cruise glide- angle=]

Re: [Flightgear-devel] YASIM Comment (was New aircraft: SF-25)

2011-08-15 Thread Ron Jensen
On Monday 15 August 2011 11:18:53 Gary Neely wrote: Looks like a great start. The first thing I would do before anything else is make sure your CG is positioned reasonably. In your SF-25, the CG is much too far back; given the forward-swept wings, it looks to be about a meter behind MAC: