Discussion
Rotation sensing technologies compared.
| Technology | Moving parts | Spin-up time | Main limitation |
|---|---|---|---|
| Air-driven spinning mass | Yes | Yes | Gradual undetected failure |
| Electric spinning mass | Yes | Yes | Bearing wear and drift |
| Ring laser | Dither only | No | Lock-in at low rates |
| Fibre optic | None | No | Sensitivity to temperature |
What general trend does the table show?
Answer: A
Each generation eliminated the dominant failure of the one before it, replacing it with a different and generally more manageable limitation. None of them is free of limitations, which is why the last column is never empty.
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