All Questions
3
questions
8
votes
1
answer
836
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How much time does it take to circularize a GTO orbit using ion propulsion?
SpaceX launched two GEO comsats, and is about to launch two more, that use all-electric ion propulsion.
Now, I'm wondering, how much time would it take to actually make a satellite like that ...
4
votes
1
answer
1k
views
How did SES-9 reach geostationary orbit from inclined transfer orbit (from F9 2nd stage)
The Spaceflight Now article Flight timeline for Falcon 9’s launch of SES 9 says near the end that the Falcon 9 2nd stage will leave SES-9 in an elliptical, inclined transfer orbit.
And Falcon 9 rocket ...
8
votes
2
answers
1k
views
What will be "unique" about upcoming SES-9 GTO transfer profile by SpaceX?
In the SES-9 mission press kit, SpaceX mentions:
"Given this mission’s unique GTO profile, a successful landing is not expected."
What is considered "unique" about this transfer orbit's profile?
...