Continuing the list: DG-101G:
I tried to do some soaring in the DG-101G. There seems to be something wrong with the plane's inertia. * To turbulence, it reacts much more violently than other planes. I thought a while ago that this may be due to a different implementation of turbulence in YaSim and JSBSim, but I'm not sure any more. Even a moderate magnitude of 0.2 leads to wild ups and downs from -4 m/s to + 4 m/s (the variomenter seems to react instantly, which is another thing which isn't very realistic). * The real giveaway is aerotow. I have to add that this is something I can fly and have done in real life, there's no way I am doing anything wrong. On the ground, when the dragger starts to pull and the rope comes under tension, the glider suddenly accelerates forward to ~180 km/h rises wildly and *overshoots* the dragger as if even the small force exerted by the rope could accelerate the glider tremendously (no intertia). In reality, it takes a lot of time to accelerate the glider under aerotow on the ground - for about 10 seconds someone needs to run with the glider to keep the wings level, for another 10 seconds or so the glider can do it on its own, then the glider lifts off the ground, finally the dragger lifts. It is quite physically impossible for the glider to overshoot the drag plane from above (and quite easy in the simulation), basically all you need to do is keep behind the dragger and try not to lift its tail too much, controlling speed is not an issue. In addition, I was unable to get any brake action either on the ground or in the air. The ground friction coefficients seem to be all wrong, the plane can roll for a kilometer after touchdown, but in reality once the tail comes down, that exerts quite a bit of drag and slows the plane down even if no brakes are applied to the wheel. Right now the only thing that does seem to work properly is gliding outside of thermals (probably the missing inertia factor cancels here, or the problem is with external forces only, but there are none?). English Electric Lightning: Nothing wrong with it, but if anyone would like to add a new splash screen picture, I have a nice series from the top of a ballistic arc at around 65.000 ft with nice aerial views of Nevada. Just let me know. * Thorsten ------------------------------------------------------------------------------ Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
