3 ms·
I’m not sure if they still use it, but there was an Inertial Reference System on board - you set your location at the start of the flight, and then it can (roug
by cjrp 2y ago
I’m not sure if they still use it, but there was an Inertial Reference System on board - you set your location at the start of the flight, and then it can (roughly) give you a position using dead reckoning. A large disagreement between this position and the GPS position would result in an alert.
- Scoundreller 2y agoDefinitely still a thing and I think that’s the goto when GPS fails. Of course there’s drift that accumulates. I think the primary threat to commercial aviation without GPS is guided landing systems where you need the location precision.