Atmosphere: -1000 to 25100
US Standard Atmosphere 1976 — atmospheric properties by altitude from sub-sea to high altitude including temperature, pressure, density, viscosity, speed of sound, mean free path, and gravity
| altitude m | altitude ft (ft) | density kg m3 (kg/m3) | density lb ft3 (lb/ft3) | dynamic viscosity Pa s (Pa*s) | gravity m s2 (m/s2) | kinematic viscosity m2 s (m2/s) | model | pressure Pa (Pa) | pressure bar (bar) | pressure psi (psi) | speed of sound ft s (ft/s) | speed of sound m s (m/s) | temperature C | temperature F | temperature K | thermal conductivity W mK (W/mK) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13,500 | 44,291.34 | 0.246465 | 0.015386 | 0.000014 | 9.765129 | 0.000058 | US_STD_1976 | 15,327.6442 | 0.153276 | 2.223091 | 968.0761 | 295.0696 | -56.5 | -69.7 | 216.65 | 0.019505 |
| 17,400 | 57,086.62 | 0.133648 | 0.008343 | 0.000014 | 9.753183 | 0.000106 | US_STD_1976 | 8,311.5964 | 0.083116 | 1.205497 | 968.0761 | 295.0696 | -56.5 | -69.7 | 216.65 | 0.019505 |
| 21,200 | 69,553.81 | 0.073323 | 0.004577 | 0.000014 | 9.741565 | 0.000195 | US_STD_1976 | 4,583.7639 | 0.045838 | 0.66482 | 970.5965 | 295.8378 | -55.3705 | -67.6668 | 217.7795 | 0.0196 |
| 25,100 | 82,349.08 | 0.039458 | 0.002463 | 0.000014 | 9.729662 | 0.000367 | US_STD_1976 | 2,510.5275 | 0.025105 | 0.364122 | 979.1862 | 298.4559 | -51.4987 | -60.6977 | 221.6513 | 0.019925 |
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