International Standard Atmosphere (ISA)
Definition
The International Standard Atmosphere (ISA) is an atmospheric model that describes the average conditions of the Earth's atmosphere. It provides data on temperature, pressure, density, and viscosity at various altitudes.
Standard Atmosphere 1976
The Standard Atmosphere 1976 is a particular ISA model that is widely used in aviation and meteorology. It defines the atmosphere as a series of layers, each with its own characteristics.
Applications
The ISA is used for a variety of applications, including:
- Aircraft performance calculations
- Meteorological forecasting
- Climate modeling
- Satellite design
Limitations
It's important to note that the ISA is a simplified model that does not account for all atmospheric conditions. For example, it does not account for variations in temperature and pressure due to weather patterns or geographical factors.
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