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ISA
- Usado para
- international standard atmosphere
- Definição1
- Atmosphere in which the sea level pressure is 1013.25 hectopascals, temperature is 15ºC, air density is 0.002378 slugs/ft3 or 1.225 kg/m3, acceleration due to gravity is 32.174 ft/s2 (9.809 m/s2), and the speed of sound is 761 mph, or 1116.4 ft/s (1225.35 km/h). It has a uniform lapse rate until the temperature drops to -56.5ºC, at 36,090 ft (11 km), after which the temperature is constant until tropopause. All aerodynamic calculations are based on the ISA.
- Fonte1
- KUMAR, Bharat (ed.). An illustrated dictionary of aviation. New York: McGraw-Hill, c2005. 752 p.
- Português
- atmosfera padrão internacional