Air driven directional gyros
Hi all.
I'm looking at an air driven directional gyro and I'm getting things all twisted up here.
My main question is regarding the erection system that ties the gyro. Exactly what doe the erection system tie the gyro to. Local horizontal or the aircraft lateral plane. My idea is that if the nozzle pillar and erection wedge plate are bolted to the same gimbal as the rotor is spinning in, they will never misallign, and if the nozzle pillar and wedge plate move with the rolling aircraft, this will cause the gyro to precess to follow the roll. I've found no good explanations for this anywhere, only that there is an erection system in place.
Thanks for any help in clarifying this for me!
/LnS