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| In [[aviation]] terminology, the '''outside air temperature''' (OAT) or static air temperature (SAT) refers to the [[Air temperature|temperature of the air]] around an [[aircraft]], but unaffected by the passage of the aircraft through it.<ref name = "FAA Definition">http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/897d269dbf5d731b8625766400563924/$FILE/AC%20251419-2.pdf</ref>
| | Hello! My name is Sebastian. <br>It is a little about myself: I live in United States, my city of Flint. <br>It's called often Eastern or cultural capital of MI. I've married 4 years ago.<br>I have two children - a son (Desiree) and the daughter (Erin). We all like Amateur radio.<br><br>my blog ... [http://tinyurl.com/l2yjyvf http://tinyurl.com/l2yjyvf] |
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| ==Aviation usage==
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| The outside air temperature is used in many calculations pertaining to [[flight planning]], some of them being [[takeoff]] performance, [[density altitude]], [[Cruise (flight)|cruise]] performance and [[go-around]] performance.<ref>''Ground Studies for Pilots: Flight Planning,'' Sixth Edition (Ground Studies for Pilots Series), Peter J. Swatton, Wiley-Blackwell; 6 edition (December 3, 2002), 978-0632059393</ref> In most texts, the abbreviation, "OAT" is used.
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| ===Units===
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| Most performance and flight planning graphs and tables use either degrees [[Celsius]] or [[Fahrenheit]] or both. The [[Kelvin]] scale, however, is used for [[Mach number]] calculations. For example, the [[speed of sound]] in dry air is
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| :<math>{c}= 38.945 \sqrt{K}</math>
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| where:
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| :<math>c</math> is the speed of sound in [[Knot (unit)|knots]] and
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| :<math>K</math> is the outside air temperature in [[kelvin]]s
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| ===Sources===
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| Outside air temperature can be obtained from the aviation [[meteorology|meteorological]] services, on the [[Automatic Terminal Information Service|ATIS]] or measured by a [[sensor|probe]] on the aircraft. When measured by the airplane's probe in flight, it may have to be corrected for [[adiabatic]] (ram effect) rise and [[friction]],<ref>http://www.faa.gov/library/manuals/aviation/pilot_handbook/media/PHAK%20-%20Appendix-Glossary-Index.pdf</ref> particularly in high performance aircraft.
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| ==See also==
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| *[[Acronyms and abbreviations in avionics]]
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| *[[Density altitude]]
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| *[[Hot and high]]
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| *[[Total air temperature]]
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| ==References==
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| <references/>
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| [[Category:Aviation meteorology]]
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Hello! My name is Sebastian.
It is a little about myself: I live in United States, my city of Flint.
It's called often Eastern or cultural capital of MI. I've married 4 years ago.
I have two children - a son (Desiree) and the daughter (Erin). We all like Amateur radio.
my blog ... http://tinyurl.com/l2yjyvf