The Digitrak is described as employing "gyroscopic rate sensors are installed so as to sense motion about each of the major axes (roll, yaw and pitch)."
I assume they mean there is a spinning gryo around which three sensors are arranged, to sense motion in each axis, pitch, roll and yaw. The sensors report how much the aircraft has moved around the gyro for each axis. From what I can see of the various default instruments in FlightGear, the only source of roll angle from an instrument is the attitude indicator or indirectly, the turn coordinator, which the Digitrak does not use. I conclude that to model the Digitrak fully, I would need to create C code to represent this three axis gyro using the gyro.*** code that the attitude indicator depends on. I have a little experience with C, but not much. I nearly understand how the attitude indicator works with the gyro model, but I still have to many questions to comprehend all it is doing. I also assume that using /orientation/roll-angle is the best substitute currently available. I would appreciate any help with this and please correct me if I am wrong in any of this. I think the Digitrak would make an interesting contribution to FlightGear. Thanks, Steve _______________________________________________ Flightgear-devel mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
