Originally Posted by
MikeB525
Stupid question since I'm instrument rated and should probably know this: What is TOTAL air temperature? Total of what?
A little simpler than the other explanation. When air runs into something, or something runs into air (like and airplane), the air gets compressed. When it gets compressed it gets heated. The additional heating is called the ram rise.
Total Air temperature (TAT) is the sum of the static air temperature (SAT) outside and the heat generated from the compression, the ram rise.
Oh yeah, the TSA are a bunch of idiots.