constant deviation
[/ˈkɒnstənt ˌdeviˈeɪʃən/]
nounpl: constant deviations
desvio constante
1. In navigation and surveying, a persistent angular difference between true direction and measured direction, typically caused by magnetic interference or instrumental error
The compass showed a constant deviation of 5 degrees east throughout the voyage.
A bússola apresentou um desvio constante de 5 graus para leste durante toda a viagem.
2. In statistics and quality control, a systematic error that remains unchanged across multiple measurements
The scale had a constant deviation of 2 kilograms, always reading heavier than actual weight.
A balança tinha um desvio constante de 2 quilogramas, sempre indicando peso maior que o real.
3. In aviation, a regular angular offset between the aircraft's heading indicator and actual magnetic heading
Pilots must account for the aircraft's constant deviation when setting their course.
Os pilotos devem levar em conta o desvio constante da aeronave ao definir seu rumo.
This is a technical term primarily used in maritime, aviation, surveying, and scientific contexts. It's more common in professional and academic settings than in everyday speech. In Brazil, mariners and pilots regularly work with constant deviation tables and correction procedures. The term reflects the importance of precision in navigation-related fields where small deviations can result in significant errors over long distances.
Related Idioms & Phrases
to correct for constant deviation
to account for constant deviation
to calibrate out constant deviation
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