EFIS Gyro Stability
Hi folks,
we all know the position in the IRU's drift over time as the accelerometers aren't 100% accurate. (Just as the heading drift on old DGs)
But what about the laser/ring gyros? I've never read that you need to check their accuracy but wouldn't the attitude be just as affected by gyro drift?
Granted, airliners are usually limited to small pitch / bank values (30-40°) and the rotation rate is also quite low but still, wouldn't turbulence cause errors?
Or is there a way to re-calibrate the gyros in straight and level flight?
Thanks,
Mark