New answers tagged gnss
1
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Why don't planes (mostly airliners) primarily use GPS for navigation?
IRS are used for attitude reference, not just location. GPSS has no way to know if you are flying upside down and sidewards, it can only show where your antenna was located when the last set of ...
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5
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Why don't planes (mostly airliners) primarily use GPS for navigation?
For many purposes the GPS is good is enough. Systems certified for RNP after all provide a 1x10-7 per flight hour containment guarantee and decent availability numbers. For other purposes, like total ...
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2
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Why don't planes (mostly airliners) primarily use GPS for navigation?
This doesn't seem to be explicitly stated in any other answer: a significant part of procedures for flying airplanes comes from a desire for reliability, redundancy and fail-safes.
I can't tell from ...
16
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Why don't planes (mostly airliners) primarily use GPS for navigation?
While the other answers are correct about why GPS (or similar GNSS, such as GLONASS, etc.) aren't used exclusively for aircraft navigation, I would say that, these days, the premise of this question ...
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24
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Accepted
Why don't planes (mostly airliners) primarily use GPS for navigation?
Both IRS and GPS (as well as VOR, and DME, when needed and available) contribute to the aircraft's position determination being used by the navigation system's computer(s) at any given moment.
IRS can ...
- 32.4k
34
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Why don't planes (mostly airliners) primarily use GPS for navigation?
Satellite-based navigation is not reliable. The operator can turn it off. The satellites can fail. The signal can be jammed or spoofed.
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