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Back to: "D"datum
- Definição1
- A reference from which measurements are made. For example, mean sea level is a datum for measuring true altitude, and the freezing point of pure water is a datum for measuring temperature.
- Fonte1
- CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
- Definição2
- An imaginary vertical plane or line from which all measurements of moment arm are taken. The datum is established by the manufacturer.
- Fonte2
- ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 15971-4: aeronáutica – vocabulário – parte 4: propulsão aeronáutica. Rio de Janeiro, 2011. 44 p.
- Nota adicional1
- Information regarding this term is a result of researches developed by DECEA in cooperation with ANAC.
- Contexto
- SAR facilities and personnel using electronic navigation systems (e.g., GNSS) must ensure their navigation devices are set to the appropriate datum and co-ordinate system.
- Subárea1
- Aviation General Terminology
- Related Term
- geodetic datum
- Português
- datum