Timeline for General guidelines for modeling a low thrust ion spiral?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 26, 2015 at 18:33 | comment | added | Puffin | One last thought that has just come back to me: the example I have desribed will not give you an exact circular orbit, you will need to tidy it up once you have got most of the way there. | |
| Oct 25, 2015 at 18:13 | comment | added | Puffin | You could get a rough idea of the effects of adding a small ∆V through the vis-viva equation, i.e. check the impact on the semi-major axis, at places progressively away from apogee. v^2 = GM (2/r - 1/a) | |
| Oct 25, 2015 at 18:10 | comment | added | Puffin | I confess for my part that the "cosine dependency" was something I thought of twenty years ago when I didn't have the time to look into it more. I meant to use the cosine shape to inspire what length of arc to apply full thrust. It will be trial and error in choosing a compromise between propellant efficiency and transfer time. You could also decide to modulate the thrust level, or direction (to remain orthogonal to the radius vector), away from apogee. I couldn't say off the cuff which would be better. | |
| Oct 24, 2015 at 9:11 | comment | added | HopDavid | I was thinking of circular to circular orbits. But now that you mention it I would like modeling elliptical to elliptical orbits. So I've upvoted your answer. though I have to confess that I'm not sure what you mean by a cosine dependency. | |
| Oct 9, 2015 at 17:02 | review | Late answers | |||
| Oct 9, 2015 at 17:18 | |||||
| Oct 9, 2015 at 16:47 | history | answered | Puffin | CC BY-SA 3.0 |