Frequent gyro compass calibration

[YoYo]

Is the crossover between the magnetic compass and the gyro isnt too frequent and too big?

Even after in-flight calibration, it needs to be repeated very, very often, almost every few minutes or after a few maneuvers. This causes that the gyro compass calibration knob is often used, but I have the impression that it is too often. What do you think?

[Zabuzard]

Are you flying straight and level? The gyro compass only gives usable readings when not maneuvering.

[Mermoz]

The gyro would always get some drift during a flight as it is sensitive to vibration. However it is very very quick in DCS. Much too quick actually.

But the issue maybe somwhere else. The Vacum Pump indicator never reaches the green area during flight and the Gyro compas and Horizon work on vacum... they need the needle in the green to work correctly.

maybe some setting to check in the model

[YoYo]

The point is that we adjust it very often, and after a few maneuvers we already have quite a large error on the indication. So we have to repeat calibration over and over.

[jackill]

@YoYoSomebody also noticed: https://www.youtube.com/post/UgkxPtUGLWpk4jKY_01DQOqGHCYGdsjpLIop

[=475FG= Dawger]

17 hours ago, YoYo said:

The point is that we adjust it very often, and after a few maneuvers we already have quite a large error on the indication. So we have to repeat calibration over and over.

Maneuvering with an uncaged gyro of that era will tumble it and make it have very large errors. 
 

A directional gyro has an apparent drift in degrees of 15 x Sine of the Latitude/Hour

Air driven gyros have vanes that drive the gyro that wear over time or are damaged in maneuvers while uncaged, causing rapid real drift.

I have seen directional gyros drift at a degree per second and one caused a quite funny, if extremely dangerous, incident on the Little Rock tower frequency involving my then boss many moons ago. 

Edited May 8, 2023 by =475FG= Dawger