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Sections :
International Standard Atmosphere (ISA)
Sea Level Conditions
ISA Variation with Altitude
Variation due to Local Ground Conditions
Variation of Density due to Humidity
Variation of Density with Extremely High Altitude
Tabulated Data :
Table of Atmosphere Properties.
Software :
Atmosphere Properties Web Calculator
Atmosphere Properties Calculator (MS Windows Executable)
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SEA LEVEL CONDITIONS
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Property
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Metric unit
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Imperial Unit
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| Pressure, $P$ |
101.3 kPa |
2116.7 lbf/ft2 |
| Density, $ρ$ |
1.225 Kg/m3 |
0.002378 slug/ft3 |
| Temperature, $T$ |
15oC , 288.2 K |
59 oF , 518oR |
| Speed of Sound, $a$ |
340.3 m/s |
1116.4 ft/s |
| Viscosity, $μ$ |
1.789 x 10-5 Kg/m/s |
3.737 x 10-7 slug/ft/s |
| Kinematic Viscosity, $ν$ |
1.460 x 10-5m2/s |
1.5723 x 10-4ft2/s |
| Thermal Conductivity, $k$ |
0.02596 W/m/K |
0.015 BTU/hr/ft/oR |
| Gas Constant, $R$ |
287.1 J/Kg/K |
1715.7 ft lbf/slug/oR |
| Specific Heat, $C_p$ |
1005 J/Kg/K |
6005 ft lbf/slug/oR |
| Specific Heat, $C_v$ |
717.98 J/Kg/K |
4289 ft lbf/slug/oR |
| Ratio of Specific Heats, $γ$ |
1.40 |
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| Gravitational Acceleration, $g$ |
9.80665 m/s2 |
32.174 ft/s2 |
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