U.S Standard Atmosphere

Properties of US standard atmosphere ranging -5000 to 250000 ft altitude

The standard atmosphere can be regarded as the average pressure, temperature and air density for various altitudes. The US Standard Atmosphere 1976 is an average, piece-wise continuous, mid-latitude temperature profile of the earth's atmosphere. It is defined as having a temperature of 288.15 K at the the sea level - 0 km geopotential height = 1013.25 hPa.

The atmosphere can be divided in the

  • Troposphere ranging 0 to 11 km (36.000 ft) altitude
  • Stratosphere ranging 11 to to 51 km (167.000 ft) altitude
  • Mesosphere ranging 51 to 71 km (232.000 ft) altitude
  • Ionosphere ranging above 71 km (above 232.000 ft) altitude

With the atmosphere air properties table - the temperature, pressure, acceleration of gravity, absolute pressure, density and viscosity can be determined at different altitudes.

U.S Standard Atmosphere Air Properties in Imperial (BG) Units

Geo potential Altitude above Sea Level
- h -
(ft)
Temperature
- t -
(oF)
Acceleration of Gravity
- g -
(ft/s2)
Absolute Pressure
- p -
(lb/in2)
Density
- ρ -
(10-4 slugs/ft3)
Dynamic Viscosity
- μ -
(
10-7 lb.s/ft2)
-5000 76.84 32.189 17.554 27.45 3.836
0 59 32.174 14.696 23.77 3.737
5000 41.17 32.159 12.228 20.48 3.637
10000 23.36 32.143 10.108 17.56 3.534
15000 5.55 32.128 8.297 14.96 3.430
20000 -12.26 32.112 6.759 12.67 3.324
25000 -30.05 32.097 5.461 10.66 3.217
30000 -47.83 32.082 4.373 8.91 3.107
35000 -65.61 32.066 3.468 7.38 2.995
40000 -69.70 32.051 2.730 5.87 2.969
45000 -69.70 32.036 2.149 4.62 2.969
50000 -69.70 32.020 1.692 3.64 2.969
60000 -69.70 31.990 1.049 2.26 2.969
70000 -67.42 31.959 0.651 1.39 2.984
80000 -61.98 31.929 0.406 0.86 3.018
90000 -56.54 31.897 0.255 0.56 3.052
100000 -51.10 31.868 0.162 0.33 3.087
150000 19.40 31.717 0.020 0.037 3.511
200000 -19.78 31.566 0.003 0.0053 3.279
250000 -88.77 31.415 0.000 0.00065 2.846

U.S Standard Atmosphere Air Properties in SI Units

Geo potential Altitude above Sea Level
- h -
(m)
Temperature
- t -
(oC)
Acceleration of Gravity
- g -
(m/s2)
Absolute Pressure
- p -
(
104 N/m2)
Density
- ρ -
(
10-1 kg/m3)
Dynamic Viscosity
- μ -
(
10-5 N.s/m2)
-1000 21.50 9.810 11.39 13.47 1.821
0 15.00 9.807 10.13 12.25 1.789
1000 8.50 9.804 8.988 11.12 1.758
2000 2.00 9.801 7.950 10.07 1.726
3000 -4.49 9.797 7.012 9.093 1.694
4000 -10.98 9.794 6.166 8.194 1.661
5000 -17.47 9.791 5.405 7.364 1.628
6000 -23.96 9.788 4.722 6.601 1.595
7000 -30.45 9.785 4.111 5.900 1.561
8000 -36.94 9.782 3.565 5.258 1.527
9000 -43.42 9.779 3.080 4.671 1.493
10000 -49.90 9.776 2.650 4.135 1.458
15000 -56.50 9.761 1.211 1.948 1.422
20000 -56.50 9.745 0.5529 0.8891 1.422
25000 -51.60 9.730 0.2549 0.4008 1.448
30000 -46.64 9.715 0.1197 0.1841 1.475
40000 -22.80 9.684 0.0287 0.03996 1.601
50000 -25 9.654 0.007978 0.01027 1.704
60000 -26.13 9.624 0.002196 0.003097 1.584
70000 -53.57 9.594 0.00052 0.0008283 1.438
80000 -74.51 9.564 0.00011 0.0001846 1.321

Related Topics

  • Material Properties - Material properties - density, heat capacity, viscosity and more - for gases, fluids and solids

Related Documents

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Edition - Online 3D modeling!

3D Engineering ToolBox - draw and model technical applications

Engineering ToolBox - SketchUp Edition - add standard and customized parametric components - like flange beams, lumbers, piping and more - to your SketchUp model - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro. Add from the Sketchup Extension Warehouse!

Translate the Engineering ToolBox!
About the Engineering ToolBox!