All Questions
Tagged with spacex communication-satellite
17
questions
27
votes
1
answer
5k
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SpaceX's 4,425 satellite constellation - what's the method to the madness?
The BBC article SpaceX aims to launch internet from space discusses the SpaceX proposal for a dense array of over 4,000 LEO satellites for global internet coverage, and links to SpaceX non-...
- 149k
8
votes
1
answer
4k
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How low is VLEO? (FCC's newest approval for SpaceX)
Engaget's SpaceX gets FCC approval to deploy thousands more internet satellites says
SpaceX's plan to build a global, high-speed wireless internet network using satellites has taken another step ...
- 149k
3
votes
0
answers
1k
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What technology will SpaceX's StarLink satellites most likely use for sat-to-sat linking?
The question How does SpaceX plan to make money with StarLink Broadband? has got me thinking about how the satellites will link to each other.
Wikipedia says it's something greater than 10,000 GHz and ...
- 149k
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 ...
- 1,652
4
votes
2
answers
352
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Is a space probe communication relay possible?
Is it possible to maintain a connection with space probes that are far away by sending other space probes behind it.
For example -
[earth] ------1---- 2-------3--------4------5....and so on if ...
- 41
4
votes
2
answers
528
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For constellations of circular LEO satellites, are there allocations of available "slots" in altitudes?
The BBC article SpaceX aims to launch internet from space discusses the SpaceX proposal for a dense array of 4,425 LEO satellites distributed among 83 orbital planes in five inclination groups as ...
- 149k
8
votes
2
answers
1k
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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?
...
- 149k
4
votes
0
answers
299
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Did the Starlink precursor Tintin satellites ever talk to each other? If so, how? Did they demonstrate an optical communications link?
Tintin A and B are the first two exploratory and testing spacecraft for SpaceX's Starlink program.
It looks like they are in very similar orbits in both space and time, and are probably that way so ...
- 149k
2
votes
1
answer
138
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"...extending the Starlink network using longer-range laser comms and relay satellites to reach Mars and Starships in-transit" (Musk & Shotwell)
I have it on good authority that SpaceX's Elon Musk and Gwynne Shotwell:
...have talked about extending the Starlink network using longer-range laser comms and relay satellites to reach Mars and ...
- 149k
7
votes
2
answers
643
views
Is secure communication in space important?
How important is secure communication in space?
Science-related research is often made public, but does that mean all communications must be unprotected?
- 335
4
votes
1
answer
436
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How stable is an orbit of 335.9 km?
Spacex has recently begun deployment of its satellite constellation that will provide internet services. In their initial filings with the FCC they propose that they may have over 7,000 VLEO (very low ...
4
votes
2
answers
768
views
What is meant by "a high-energy geostationary orbit"? (SpaceX Arabsat 6A)
The Teslarati article SpaceX’s April 7th Falcon Heavy launch a step toward new commercial markets says:
While there is some inherent uncertainty surrounding the (once again) fairly new rocket, ...
- 149k
4
votes
1
answer
1k
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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 ...
- 149k
2
votes
0
answers
308
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What kind of power is referred to in "the...most powerful all-electric propulsion communications satellite ever produced"
The Florida Today article On second flight, SpaceX Falcon 9 rocket to launch 'brute' of a satellite from Cape describes the upcoming SpaceX launch of SES-12. Next to this tiny image of (presumably) ...
- 149k
7
votes
1
answer
297
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How has the brightness of SpaceX's Starlink constellation changed since May?
Shortly after the launch, before full orientation of the solar panels and raising of the orbits, the Starlink satellites were surprisingly bright and easily seen with the naked eye.
Back then, I heard ...
- 261