Thanks, Markus Zojier hepled me too.
We have to much aircrafts, I was completely lost- so I couldn't see, that tere are some with tailerons! O.k. So I should solve my problem! Regards HHS --- LeeE <[EMAIL PROTECTED]> schrieb: > On Sunday 02 December 2007 14:48, Heiko Schulz > wrote: > > Hi, > > > > maybe this fit more to the flightmodel-list, but > I'm > > not sure about if this list is really be read;-) > > > > Trying to do a fdm with yasim for a Panavia > Tornado > > GR4 IDS I noticed that it seems to me not possible > to > > model a taileron (elevator and aileron in one > control > > surface at the tail)- I always get the error > message: > > "Insufficient elevator to trim for approach" > > > > I tried this also on the Lightning-yasim but the > same > > error... > > > > It is really not possible? > > > > On JSBsim I noticed that the thrust reverser are > not > > working ( as an example Fokker 70/100), but I > remember > > that it was working with 0.9.9 and 0.9.10 - > something > > changed or I'm too stupid? > > > > thanks > > Regards > > HHS > > First of all, you _need_ to include an elevator-trim > binding to the > hstab for YASim to solve. > > Have a look at the BAC-TSR2 (combined elevator & > aileron), YF-23 > (combined elevator & rudder) or SU-37 (combined FCS > pitch & roll). The > SU-37 has a lot of additional control inputs that > might be confusing > but the BAC-TSR2 and YF-23 are fairly simple. > > YASim assumes a fixed elevator and determining it's > incidence is > fundamental to the way it works but it is possible > to make a passable > job of simulating elevons. > > Basically, you'll need four control inputs for the > hstab element:- > > elevator, elevator-trim, aileron and aileron trim > (remember to set the > aileron and aileron-trim to split="true") > > YASim will then simply sum the inputs. The only > thing to watch out for > is that it can then output deflections of up to > +-2.0 instead of > limiting it to +-1.0 (it would be handy if such a > limiter could be > implemented). > > Another tip, one Andy R gave me a long time ago but > one I've only > recently understood the significance of, is to set > the idrag for the > elevators to a low value. With fixed tailplanes the > drag will increase > with AoA but with all-moving 'slab' tailplanes this > isn't the case, so > setting a low idrag value should help simulate this. > > So far I've only tried low idrag in the SU-37 (and > I've just added it to > the BAC-TSR2 that I'm currently revising) but it > seems to work ok. > > LeeE > > ------------------------------------------------------------------------- > SF.Net email is sponsored by: The Future of Linux > Business White Paper > from Novell. From the desktop to the data center, > Linux is going > mainstream. Let it simplify your IT future. > http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 > _______________________________________________ > Flightgear-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > Machen Sie Yahoo! zu Ihrer Startseite. Los geht's: http://de.yahoo.com/set ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
