On Sunday 16 Oct 2005 17:19, George Patterson wrote: > On Sun, 2005-10-16 at 22:15 +1300, Dene Maxwell wrote: > > Just an observation that may be of interest; > > > > I can fly approx 1500Nm over water at 300kts and not have a > > problem... reasonable graphics and even land successfully > > (any landing you can walk away from is a good landing!!!). > > > > I can't fly approx 400Nm at 300kts over land without the > > aircraft crashing about 300Nm into the flight. > > > > Some background > > NZWN (Wellington International,NZ) to YSSY > > (Sydney-Kingsford-Smith, Australia) 1484NM in a A10 > > Thunderbolt at 300kts cruise... flight goes great. > > > > YSSY (Sydney- Kingsford-Smith, Australia to YBBN (Brisbane > > International, Australia) 410NM in either an A10 Thunderbolt > > at 300kts or Cessna 310 twin prop at 180kts crashes at about > > the 300NM mark. > > > > Interestingly I can fly the A10 from YSSY out to sea, then > > due north to parallel to YBBN then line up for a landing no > > problems, total trip is about 500NM. > > > > The problem seems to be triggered by flying over land for a > > prolonged period. In all cases the majority of the flight is > > undertaken under AutoPilot control at variably 5,000 to > > 10,000 ft ASL. > > > > I have tried reducing the screen resolution from 1280x1024 > > to 800x600 but it makes no difference. > > > > The platform is a 1.8Ghz P4, Windows Me, 256M RAM, nVidia > > GeForce2 MX/MX400 video card (32Mbyte). > > > > Any comments would be gratefully received. > > Dene, > > You didn't say which version of FlightGear you are using. > > Using Flightgear CVS, I flew from NZWN to YSSY as you > suggested and apart from noting a missing tile (known bug > usually due to an airport lying across a tile boundary) I > didn't have any problems. > > YSSY to YBBN: > I started flown this route and 300nm out from YBBN , I'm still > flying. 300nm from YSSY, still here... Preparing to land at > YBBN... Not the best landing but still down in one piece. > > A couple of possibilities > The mostly likely cause is that you have found a bug in 0.9.8. > FlightGear 0.9.8 has a few major bugs here and there. > Solution: You can either upgrade to CVS (a tricky task under > windows which involved installing cygwin) or wait for version > 0.9.9. > > The other (albeit unlikely) possible is that it is something > in your hardware or software set up. > > Could someone with similar hardware and OS comment on this > cross country flight? My hardware doesn't match what Dene is > using. (I am still thinking that the problem was to do with a > 0.9.8 bug) > > George Patterson
The only thing that occurs to me is that a lot more textures are used when flying over land than when over the sea. You could try re-naming the Textures.high folder, so that the high-res ground textures aren't used and see if that makes any difference. LeeE _______________________________________________ Flightgear-users mailing list Flightgear-users@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-users 2f585eeea02e2c79d7b1d8c4963bae2d
