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Bug #13414

Synchronous orbits given with reverse orbit direction.

Added by Ruedii almost 8 years ago. Updated almost 7 years ago.

Status:
New
Severity:
Very Low
Assignee:
-
Category:
-
Target version:
-
Start date:
12/12/2016
% Done:

0%

Version:
1.2.2
Platform:
Linux
Expansion:
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

Currently the orbit generator for satellite contracts specifies a synchronous orbit by altitude. Unfortunately, it is giving some with orbits over 90 inclination (i.e. reverse orbits). By definition a synchronous orbit should spin with the planet, meaning between 0 and 90 degrees.

Expected behavior:
Synchronous orbits generated by contract generator should be roughly synchronous.

Actually behavior:
Some go the opposite direction of planet spin, and thus aren't synchronous.

Attached screen-shot of one such contract.

screenshot8.png (402 KB) screenshot8.png Mission control screenshot Ruedii, 12/12/2016 05:58 AM
26224

History

#1 Updated by gfrodo over 7 years ago

Well, sun-synchronous orbits (not planet synchronous) have a slightly retrograde polar orbit, due to fancy physics effects, which are not simulated in KSP. As a result, the orbital plane rotates once a year.

On the subject: I got in my career game a contract for a satellite in retrograde sun orbit (178° inclination), while I'm still only flying to Mun and Minmus. I think on my hard difficult settings it is nearly impossible to get enough funds and science to build an over 20000m/s rocket for that payload, but I still accepted it for fun and just to try it. Maybe I will file a separate bug report for this contract.

#2 Updated by Ruedii almost 7 years ago

It should simply be considered not to be synchronous.

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