David Megginson writes: > Perhaps you could explain the problem in more detail: we get a lot of > "why does the plane pull to the left?" questions from people who don't > know about adverse yaw, so we usually assume that's the problem. > > First, you mentioned that the plane veers to the left not only during > power climb but during initial rollout. How big is the veer? Does it > just drift off the runway slowly (as in real life), or does it turn > sharply? > > If the turn is sudden, then you can test the problem by unplugging all > joysticks, rudder pedals, yokes, and other controllers, then trying it > using only the keyboard (hold down Page Up to advance the throttle). > If the veer isn't as bad, then one of your controllers might be > miscalibrated.
For what it's worth, with the default JSBSim C172 using keyboard control (the assumption being there is no possible joystick calibration issues) I observe the following. After giving full throttle, at the beginning of the roll out, I'm forced to give full right rudder to keep the aircraft rolling approximately straight, but as the speed begins to pick up I can slowly back off the rudder. By the time I'm doing 40-50 knots, I can roll straight with neutral rudder. This almost feels to me like the nose wheel is completely ineffective, even at low speeds, but I haven't investigated closely. Regards, Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-users mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-users
