From: Alan T. <ajt...@v-...> - 2019-06-02 07:43:54
|
On 01/06/2019 13:05, Ron Jensen wrote: > Alan, > > If you're in FlightGear and have wind, you should be using sin(alpha) and > sin(beta) instead of using the raw values in your aerodynamics sections, > otherwise even small winds can build up unrealistically large aerodynamic > forces. > > Ron ------------- Rin I am doing this testing with zero wind and will only add cross-winds when I can control the aircraft. I like the idea of using cos(beta) so that beta effects are smoothly limited. I believe that the main gear side forces and the resultant yaw motion is unstable , and these are running away. With taildragger these forces are in front of the CG. Alan |