One more time.
“Rigidity in space” is exhibited in a spinning purely mechanical balanced gyroscopic system (with or without an aircraft attached).
No electronics. No corrections. No algorithms.
Just a spinning gyroscope in a gimbal.
You are ignoring the evidence.
Ah, a flat-earther looking for evidence that the world is round, eh? I love it when you guys demand evidence.
How about this one. Great circle navigation. Specifically southern polar great circle navigation routes.
Qantas flies non-stop flights between Australia and South Africa and South America.
How is this possible if the earth is flat?
It is possible because the world is round and Qantas flies the southern polar great circle routes between these three nations.