3 ms·
Not my area at all, but I'm extremely surprised that a fly-by-wire system would use GPS as an altitude reference. Is that really the case?
by RossBencina 11mo ago
Not my area at all, but I'm extremely surprised that a fly-by-wire system would use GPS as an altitude reference. Is that really the case?
- adhambadr 11mo agoIt’s a combined signal system, using pressure based sensors + gps.
- ape4 11mo agoAnd inertial guidance too?
- adhambadr 11mo agoI don’t know what airbus uses I only looked into the schematics of commercial avionics like Garmin. I doubted though IMU drift and calibration introduce more error than they can provide in useful signal, old school pressure sensors + gps adjusted manually or automatically for regional pressure settings (pilots get these numbers through radio when they enter a new pressure area) is accurate enough (~1m). I’ll let a real avionics engineer correct me here, I’d be curious if that signal is worth the hassle + I can imagine such tiny SMD sensors ARE the biggest victims of radiation hallucination.