Heiko Schulz wrote: > Hi, > > > >> Hello everyone , >> I 've been pondering an idea of adding >> updraft/downdrafts to the >> environment, probably as a part of turbulence , so it can >> be >> enabled/disabled... >> My idea is to calculate wind-speed-from -down , by checking >> wind speed , >> direction , and the normal of the >> scenery triangle directly beneath the aircraft , sampling >> every second >> or so.Also with a scenery material and time of day check >> for updrafts >> over flat country . >> Ive tried to find a starting point in the code , but get >> more >> discouraged as I get lost in it. >> Any suggestions on the best starting place in the code for >> something >> like this , or is this something that >> is even worth adding ? Any suggestions would be >> helpful.Thanks >> >> > > You mean that thing also known as "thermals" ? > that too , yes :) > Would be great we had these- just some weeks ago I had a sightseeing flight > in a helicopter- and the thing I noticed on this flight were the strong up/ > downdrafts and their missing in FlightGear. I miss thhis very much in > FlightGear, more in small aircrafts than the bigger one. > > It is indeed a very important part yet missing! > > We already have up/ downwinds with AI scenery- maybe this could be a starting > point for you. And I can remember that Detlef Faber wanted to start on > something like that, but he wanted to use Nasal scripting. > > Regards > HHS > VFR flying in these BC mountains is pretty unrealistic , atmosphere wise , which is why I want to attempt this . You can clear a ridge at 50 feet if you want , without the danger involved .... I.ve been on a few rides where cresting a ridge and hitting the downdraft nearly planted you on the ceiling ...... so my simple idea is to have the wind 'follow' the terrain , leveling out at higher altitude, and improve the behaviour somewhat. Now actually implementing this might be beyond my skill , but going to give it a try anyway. Also I,ve noticed that the current turbulence is very repetitive , it doesn't feel very random .... Thanks for the input , Heiko .
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