May 2014
Intermediate to advanced
1048 pages
34h 57m
English
Content preview from Aircraft Propulsion, 2nd Edition
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APPENDIX A U.S. Standard Atmosphere
U.S. Standard Atmosphere U.S. Units
In this table alt is altitude in thousands of feet.
sigma is density divided by sea-level density.
delta is pressure divided by sea-level pressure.
theta is temperature divided by sea-level temperature.
temp is temperature in degrees Rankine.
press is pressure in pounds per square foot.
dens is density in slugs per cubic foot.
a is the speed of sound in feet per second.
visc is viscosity in 10−6 slugs per foot-second.
k.visc is kinematic viscosity in 10−6 square feet per second.
ratio is speed of sound divided by kinematic viscosity times 106.
Sea-level density = 0.0023769 slugs per cubic foot
Sea-level temperature = 518.7 degree Rankine
Sea-level pressure = 2116.2 pounds per square foot
| alt | sigma | delta | theta | temp | press | dens | a | visc | k.visc | ratio |
| −1 | 1.0296 | 1.0367 | 1.0069 | 522.2 | 2193.8 | 0.0024472 | 1120.3 | 0.376 | 1.54E–4 | 7.30 |
| 0 | 1.0000 | 1.0000 | 1.0000 | 518.7 | 2116.2 | 0.0023769 | 1116.5 | 0.374 | 1.57E–4 | 7.10 |
| 1 | 0.9711 | 0.9644 | 0.9931 | 515.1 | 2040.9 | 0.0023081 | 1112.6 | 0.372 | 1.61E–4 | 6.91 |
| 2 | 0.9428 | 0.9298 | 0.9863 | 511.5 | 1967.7 | 0.0022409 | 1108.7 | 0.370 | 1.65E–4 | 6.72 |
| 3 | 0.9151 | 0.8963 | 0.9794 | 508.0 | 1896.7 | 0.0021752 | 1104.9 | 0.368 | 1.69E–4 | 6.54 |
| 4 | 0.8881 | 0.8637 | 0.9725 | 504.4 | 1827.7 | 0.0021109 | 1101.0 | 0.366 | 1.73E–4 | 6.36 |
| 5 | 0.8617 | 0.8321 | 0.9656 | 500.8 | 1760.9 | 0.0020482 | 1097.1 | 0.364 | 1.78E–4 | 6.18 |
| 6 | 0.8359 | 0.8014 | 0.9588 | 497.3 | 1696.0 | 0.0019869 | 1093.2 | 0.362 | 1.82E–4 | 6.01 |
| 7 | 0.8107 | 0.7717 | 0.9519 | 493.7 | 1633.1 | 0.0019270 | 1089.3 |
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