All Questions
Tagged with spacex communication-satellite
25
questions
10
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Does SpaceX expect 1 collision involving one of their Starlink satellites every 2 years?
I read on https://gizmodo.com/spacex-starlink-satellites-dodge-137-objects-daily-1850616506
by Passant Rabie:
A new report revealed that Starlink satellites had to make 25,000 collision avoidance ...
- 1,164
3
votes
2
answers
749
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What is the theoretical smallest size limit for a phased array antenna that can reach LEO?
Now that one provider is operating a phased array ground-to-satellite internet comm system, others will follow. A frequently asked question is "When can we use Starlink with a sat phone?". ...
- 723
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
3
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4
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Quantum technology for starship communications and landing on Mars
Based on practically proven Quantum-Entanglement principle, any entangled quantum switch in this universe can be flipped instantaneously from elsewhere. Can it be used to send information from far off ...
- 1,175
4
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0
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How will Amazon's constellation differentiate itself from SpaceX's and OneWeb's?
The New York Times' Amazon Satellites Add to Astronomers’ Worries About the Night Sky says:
Much of the attention on these strings of satellites has been placed on the prolific launches of SpaceX and ...
- 149k
10
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1
answer
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How much krypton is stored on a Starlink satellite?
How much krypton (fuel) is there for the krypton-powered ion thrusters on Starlink satellites and how long does it last?
- 101
4
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1
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347
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Has FCC jurisdiction for all the world for SpaceX's Starlink position?
These days, you can read in the news that SpaceX requested FCC for permission to change the orbit of the Starlink satellites already in orbit.
Now... from my understanding, the Starlink satellites ...
- 141
7
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1
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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
4
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2
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768
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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
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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
8
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1
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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
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0
answers
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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
4
votes
2
answers
825
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How does SpaceX plan to make money with StarLink Broadband?
To me, it seems obvious that ground based optical fibres will be cheaper than a space based system by an order of magnitude. So unless say, everyone starts sea-steading and a space based broadband is ...
- 741
2
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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
4
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1
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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
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2
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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
6
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1
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518
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How are multiple low orbit communication satellites per launch distributed along an orbital plane for global coverage?
SpaceX talks about launching 4,425 communication satellites into 83 different orbital planes at 1,100 km altitude. That's about 50 satellites per orbital plane. In terms of capacity to LEO, a Falcon 9 ...
- 27k
7
votes
2
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643
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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?
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12
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1
answer
3k
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How much will SpaceX's constellation of Internet satellites cost?
SpaceX has a plan to launch up to 4K satellites to provide global Internet access. Is there a reasonable estimate of how much this constellation would cost to launch? Also, as the minimum number of ...
- 121k
4
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2
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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
1
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0
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66
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Does a low-orbit communication network drive a sustainable launch market?
With SpaceX recent announcement of a huge satellite network in low earth orbit, I was wondering if such a network would motivate a sustainable large-scale launch capacity, i.e. a increase of scale of ...
- 2,453
27
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1
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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
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1
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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
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1
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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
8
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2
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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