Timeline for Flyby puzzler; starting from Earth, how many times can you use Jupiter flybys in one century?
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 25, 2022 at 0:41 | vote | accept | uhoh | ||
| Aug 9, 2021 at 2:05 | comment | added | uhoh | Oh rats, I forgot the "I'll call that factor 10% arbitrarily. If there are profound or compelling answers that have a slightly lower factor they won't be balked-at" It was originally 5% to begin with, I wonder if that would have made all the difference? | |
| Aug 9, 2021 at 1:52 | comment | added | SE - stop firing the good guys | @uhoh Yeah, that would be optimal under the present rules. The degenerate near-rectlinar halo orbit would in patched conic terms be an elliptic orbit around Jupiter, dipping just outside the SOI. So the upper limit that way is 47 flybys, although the inclination change in that extreme case is too low. | |
| Aug 9, 2021 at 1:18 | comment | added | uhoh | I wonder if you can beat this answer with a near-rectilinear halo orbit? The question is asked as a circular restricted three-body problem (Sun and Jupiter in circular orbit) so that just might "fly". | |
| Aug 9, 2021 at 1:14 | vote | accept | uhoh | ||
| Aug 9, 2021 at 1:15 | |||||
| Aug 6, 2021 at 23:31 | comment | added | uhoh | Thank you for adding the reference, it's fascinating! "During the review process for this paper, one of the referees suggested that the exact conditions for the reflected BackFlip be published so that others may reproduce the results without undue difficulty." Hmm, I don't recall ever reviewing this paper :-) Table I provides some testable state vectors for Earth-Moon µ = 0.0121516 which is more challenging than Sun-Jupiter µ = 0.0009545942. Now to try to find a copy of Ref. 4 Orbit design concepts for Jupiter orbiter missions | |
| Aug 6, 2021 at 19:27 | comment | added | SE - stop firing the good guys | @uhoh "Lunar Cycler Orbits with Alternating Semi-Monthly Transfer Windows" to the resque! | |
| Aug 6, 2021 at 19:25 | history | edited | SE - stop firing the good guys | CC BY-SA 4.0 |
example derivation
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| Aug 6, 2021 at 18:24 | comment | added | SE - stop firing the good guys | @uhoh ""90 degree inclination flyby with a perijove above a pole of Jupiter" isn't even possible." This is clearly not true. Any orbit with a perijove over the pole has an inclination of 90 degrees. | |
| Aug 6, 2021 at 18:08 | comment | added | BrendanLuke15 | perhaps "90 degree inclination change flyby..." would make more sense | |
| Aug 6, 2021 at 17:44 | history | edited | SE - stop firing the good guys | CC BY-SA 4.0 |
better have the flyby description included in the answer too
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| Aug 6, 2021 at 17:40 | comment | added | SE - stop firing the good guys | @uhoh Conservation of heliocentric C3 merely requires that the Jovian entry and exit vectors have the same velocity component along the axis of Jupiter's motion. Every 90 degree inclination flyby with a perijove above a pole of Jupiter is a counterexample to your claim. | |
| Aug 6, 2021 at 12:38 | history | answered | SE - stop firing the good guys | CC BY-SA 4.0 |