Timeline for How steady is the atmospheric drag force experienced by the ISS?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Apr 11, 2018 at 11:44 | comment | added | David Hammen | The diurnal effect has nothing to do with spacecraft altitude variations. It is a variation in the atmosphere itself. The Sun heats up the sunlit side of the Earth's atmosphere, making it swell up. The atmosphere on the unlit side of the Earth cools and shrinks. The ISS sails through this large variation in density about 16 times a day. | |
| Apr 11, 2018 at 2:35 | comment | added | zephyr0110 | Diurnal effect happens because if you are at perigee and it is night at perigee point, because of much cooler temperature the density will decrease at LEO? Or increase? | |
| Apr 11, 2018 at 1:34 | comment | added | David Hammen | This answer misses the large diurnal effect (a factor of more than two), the much larger variations due to smallish changes in solar activity, and the absolutely huge variations over the course of the eleven year solar cycle. | |
| Apr 10, 2018 at 14:51 | comment | added | zephyr0110 | Variation in altitude will add a proportionality factor, which should not be significant. I will look for equation valid for LEO density variation | |
| Apr 10, 2018 at 14:49 | history | edited | zephyr0110 | CC BY-SA 3.0 |
Uhoh pointed out silly mistake
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| Apr 10, 2018 at 14:38 | comment | added | zephyr0110 | Oh that is so ignorant of me. I’ll edit the answer. | |
| Apr 10, 2018 at 11:29 | history | answered | zephyr0110 | CC BY-SA 3.0 |