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The air is compressed and experiences an adiabatic increase in temperature. Therefore, total air temperature is higher than the static (or ambient) air temperature. Total air temperature is an essential input to an air data computer in order to enable the computation of static air temperature and hence true airspeed.
When measured by the airplane's probe in flight, it may have to be corrected for adiabatic (ram effect) rise and friction, [3] particularly in high performance aircraft. Therefore, the outside air temperature is usually calculated from the total air temperature .
Stagnation properties (e.g., stagnation temperature, stagnation pressure) are useful in jet engine performance calculations. In engine operations, stagnation temperature is often called total air temperature. A bimetallic thermocouple is frequently used to measure stagnation temperature, but allowances for thermal radiation must be made.
An air data computer (ADC) or central air data computer (CADC) computes altitude, vertical speed, air speed, and Mach number from pressure and temperature inputs. [1] It is an essential avionics component found in modern aircraft.
Electronic flight instrument systems (EFIS) contain an air data computer with inputs of impact pressure, static pressure and total air temperature. In order to compute TAS, the air data computer must convert total air temperature to static air temperature. This is also a function of Mach number:
Air Satellite Flight 501 was a scheduled domestic passenger flight from Baie-Comeau to Rimouski in Quebec that was operated by the regional airline Air Satellite.On 7 December 1998, while taking off in freezing conditions, the aircraft pitched up suddenly and became unstable while the flaps were being retracted.
A Delta passenger and flight attendant were taken to the hospital following high temperatures in the cabin on a Monday flight from Las Vegas. High cabin temperatures send Delta flyer, flight ...
Spanair Flight 5022 or (JK5022/JKK5022) was a scheduled domestic passenger flight from Barcelona–El Prat Airport to Gran Canaria Airport, Spain, with a stopover in Madrid–Barajas Airport that crashed just after take-off from runway 36L at Madrid-Barajas Airport to Gran Canaria Airport at 14:24 CEST (12:24 UTC) on 20 August 2008.