Re: Paraglider Model
Sylvain Mazet <[email protected]> Mon, 18 Oct 2010 00:14:18 +0200
| Newsgroups | gmane.games.flightgear.flightmodel |
|---|---|
| Message-ID | <[email protected]> |
--===============1965122836348053667== Content-Type: multipart/alternative; boundary=001636c598db82743d0492d761eb --001636c598db82743d0492d761eb Content-Type: text/plain; charset=ISO-8859-1 Hi, I had myself done a paraglider model in fgfs 1.9.x). I remember I had to do something (in c++) to put the pilot mass well below the wing, and get a correct pendulum effect. I think it was with JSBsim. But I could not manage to get the wing characteristics right, except for straight and level flight (finesse and airspeed). It was not really statisfactory. I can look more closely into what i had done, and what Ron did. See you soon, Sylvain (in real life, paraglider pilot and software developper). On Sun, Oct 17, 2010 at 6:54 PM, Ron Jensen <[email protected]> wrote: > On Sunday 17 October 2010 09:49:23 Thomas Pantzer wrote: > > Hello, > > > > I'm new to flightgear. I just managed to compile and install the whole > > stuff. As I'm also a real paraglider pilot (para pro stage 5) I'm > > especcially interested in the paraglider model. > > > > As I have seen, the simulation is really far away from the real > behaviour. > > There are several things in the simulation that really dont match any > "sort > > of" reality. > > > > 1.) the pilot is always hanging straight down due to the pendulum effect > > > > 2.) the airfoil is most of the time (in regular flying state) time > > horizontal. The sinking rate and the forward speed make the angle of > attack > > for the wing. > > > > I want to improve the (or even start over with a new) simulation model. > > Some time ago I did a small amount of work to Dave's original paraglider > guy. > The result is here: > http://www.jentronics.com/fgfs/temp/paraglider.tgz > > > Somewhere I have read that in FG it is possible to simulate an airplane > > only by geometrical description of the wing. But I've not found any > > further documentation on it. > > This sounds like a description of YASim... > > > How can I proceed ? Is there a tutorial for creating flight models? > > There are two good, physics-based flight models in FlightGear: YASim and > JSBSim. > > YASim takes physical descriptions of the aircraft and tries to model flight > behavior. > > JSBSim uses coefficient build up, that is, the FDM modeler must enter all > her > own equations for the aerodynamic portions. > > > Who can join me ? Who is interested in more realistic behaviour of the > > paraglider model ? > > > > Who can help me ? Who has experience with creating flight models? > > > > > > > > > > Best Regards > > > > Thomas Pantzer > > V/r > Ron > > > ------------------------------------------------------------------------------ > Download new Adobe(R) Flash(R) Builder(TM) 4 > The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly > Flex(R) Builder(TM)) enable the development of rich applications that run > across multiple browsers and platforms. Download your free trials today! > http://p.sf.net/sfu/adobe-dev2dev > _______________________________________________ > Flightgear-flightmodel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/flightgear-flightmodel > --001636c598db82743d0492d761eb Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi,<br>I had myself done a paraglider model in fgfs 1.9.x).<br>I remember I= had to do something (in c++) to put the pilot mass well below the wing,<br= >and get a correct pendulum effect. I think it was with JSBsim.<br><br>But = I could not manage to get the wing characteristics right,<br> except for straight and level flight (finesse and airspeed). <br>It was no= t really statisfactory.<br><br>I can look more closely into what i had done= , and what Ron did.<br><br>See you soon,<br>Sylvain (in real life, paraglid= er pilot and software developper).<br> <br><br><div class=3D"gmail_quote">On Sun, Oct 17, 2010 at 6:54 PM, Ron Jen= sen <span dir=3D"ltr"><<a href=3D"mailto:[email protected]">wino@jentr= onics.com</a>></span> wrote:<br><blockquote class=3D"gmail_quote" style= =3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; p= adding-left: 1ex;"> <div class=3D"im">On Sunday 17 October 2010 09:49:23 Thomas Pantzer wrote:<= br> > Hello,<br> ><br> > I'm new to flightgear. I just managed to compile and install the w= hole<br> > stuff. =A0As I'm also a real paraglider pilot (para pro stage 5) I= 'm<br> > especcially interested in the paraglider model.<br> ><br> > As I have seen, the simulation is really far away from the real behavi= our.<br> > There are several things in the simulation that really dont match any = "sort<br> > of" reality.<br> ><br> > 1.) the pilot is always hanging straight down due to the pendulum effe= ct<br> ><br> > 2.) the airfoil is most of the time (in regular flying state) time<br> > horizontal. The sinking rate and the forward speed make the angle of a= ttack<br> > for the wing.<br> ><br> > I want to improve the (or even start over with a new) simulation model= .<br> <br> </div>Some time ago I did a small amount of work to Dave's original par= aglider guy.<br> The result is here:<br> <a href=3D"http://www.jentronics.com/fgfs/temp/paraglider.tgz" target=3D"_b= lank">http://www.jentronics.com/fgfs/temp/paraglider.tgz</a><br> <div class=3D"im"><br> > Somewhere I have read that in FG it is possible to simulate an airplan= e<br> > only by geometrical description of the wing. =A0But I've not found= any<br> > further documentation on it.<br> <br> </div>This sounds like a description of YASim...<br> <div class=3D"im"><br> > How can I proceed ? Is there a tutorial for creating flight models?<br= > <br> </div>There are two good, physics-based flight models in FlightGear: YASim = and<br> JSBSim.<br> <br> YASim takes physical descriptions of the aircraft and tries to model flight= <br> behavior.<br> <br> JSBSim uses coefficient build up, that is, the FDM modeler must enter all h= er<br> own equations for the aerodynamic portions.<br> <div class=3D"im"><br> > Who can join me ? Who is interested in more realistic behaviour of the= <br> > paraglider model ?<br> ><br> > Who can help me ? Who has experience with creating flight models?<br> ><br> ><br> ><br> ><br> > Best Regards<br> ><br> > Thomas Pantzer<br> <br> </div>V/r<br> <font color=3D"#888888">Ron<br> </font><div><div></div><div class=3D"h5"><br> ---------------------------------------------------------------------------= ---<br> Download new Adobe(R) Flash(R) Builder(TM) 4<br> The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly<br> Flex(R) Builder(TM)) enable the development of rich applications that run<b= r> across multiple browsers and platforms. Download your free trials today!<br= > <a href=3D"http://p.sf.net/sfu/adobe-dev2dev" target=3D"_blank">http://p.sf= .net/sfu/adobe-dev2dev</a><br> _______________________________________________<br> Flightgear-flightmodel mailing list<br> <a href=3D"mailto:[email protected]">Flightgear-= [email protected]</a><br> <a href=3D"https://lists.sourceforge.net/lists/listinfo/flightgear-flightmo= del" target=3D"_blank">https://lists.sourceforge.net/lists/listinfo/flightg= ear-flightmodel</a><br> </div></div></blockquote></div><br> --001636c598db82743d0492d761eb-- --===============1965122836348053667== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev --===============1965122836348053667== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Flightgear-flightmodel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-flightmodel --===============1965122836348053667==--