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Standards Development
This document defines the “ISO Standard Atmosphere” (ISA) and specifies its characteristics. The ISA is a model of the atmosphere that represents the characteristics of Earth’s atmosphere at various altitudes.
The model provides a consistent reference for atmospheric conditions and establishes a framework for calculating and comparing parameters such as temperature, pressure, density, and other related properties.
It is intended for use in calculations and design of flying vehicles, to present the test results of flying vehicles and their components under identical conditions, and to allow unification in the field of development and calibration of instruments. Its use is also recommended in the processing of data from geophysical and meteorological observations.
Data tables of the ISA are provided for reference and easy lookup, including:
— Atmospheric tables
— Atmospheric attributes by geometric and geopotential altitude
— Hypsometric tables
— Geometric and geopotential altitudes by pressure
— Pressure by geometric and geopotential altitudes
This document covers the geometric and geopotential altitudes of the model from -5 "unitsml(km)" to 80 "unitsml(km)" , and -16500 "unitsml(ft)" to 262500 "unitsml(ft)" .
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