On Monday 07 August 2006 17:50, Andy Ross wrote: > Note to all YASim aircraft authors: the first fix discussed > below is correct and has to be applied, but will (or at least > may) have the effect of modifying the solution results of all > YASim aircraft (tails are likely to be more effective: that > means aircraft will be more stable on the whole, but less able > to achieve high AoA's at full elevator). I'd be appreciative > if everyone could take their favorite aircraft out for a spin > and report changes -- some may need re-tuning. > > Maik Justus wrote: > > Andy Ross wrote: > > > Maik Justus wrote: > > > > Therefore for an wing without flap, spoiler and slat > > > > [...] no surface element is generated. > > > > > > Ah, OK. Yes, this was indeed a bug; I'm kinda shocked > > > that we never noticed this before, it's been there since > > > the code was written. > > > > Here it (the patch) is. > > Applied. > > > But before testing it with any YASim aircraft: I probably > > found another bug in surface.cpp. For "general lift" and > > "flap-lift" the effect of stall is calculated in stallFunc() > > resp FlapLift(). > > Yup, that looks correct to me. Applied. I'm not sure what > the points was of the extra 1.0 in the return value; maybe a > holdover from an earlier version where this function returned > a scalar coefficient, and not a force? > > > If the fuselage is large in comparison to the wing, this > > amount can be rather high. > > I don't think that's correct. As I read the code, you would > get 1N of force per fuselage surface (of which there are maybe > a few dozen across a large aircraft). The first bug is a > whopper. This one is pretty much noise unless you're modeling > an R/C aircraft; I'm not surprised it stayed hidden for so > long. > > Andy
It's at times like this when I sort of regret trying to populate the FG hanger... :) Reading the comments in the commits, I think it will help things... LeeE ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
