Author Topic: ULA Atlas V 551 - ViaSat-3 F2 - CCSFS SLC-41 - NET 13/14 November 2025  (Read 146411 times)

Offline gongora

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Something from Boeing with TT&C frequencies that match Viasat 3 will undergo testing in Florida at Astrotech and "ULA Atlas Launch Pad SLC 41" NET July

Offline GewoonLukas_

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From Viasat's Q3FY2025 earnings result: ViaSat-3 F2 is targeting Late-Summer for launch: https://investors.viasat.com/static-files/d7afaa12-4d26-4b09-a1cc-9d7f0fa45a97
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Offline GewoonLukas_

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From the Q4FY2025 Shareholder Letter from today: https://investors.viasat.com/static-files/c89c3424-4ad3-4fe2-b064-72fa222990c9

Quote
[...]

One of our very highest priorities is getting VS-3 F2 and F3 into service, and we have been updating status on our satellite roadmap. For VS-3 F2 the critical path includes corrective actions and testing the reflectors and integrating with the spacecraft. We are still planning to ship VS-3 F2 to the launch site this summer. We have adjusted the in-service date roadmap to better reflect various potential schedule uncertainties post-shipment. The VS-3 F3 schedule critical path goes through antenna subsystem integration – which uses a different manufacturer and design not requiring corrective actions. We are monitoring the launch manifest and range priorities. As previously shared, VS-3 F2 will be launched via ULA. As we achieve satellite integration and test milestones on the spacecraft, we reduce the magnitude of the “bring into service” schedule risk, but of course, that does not eliminate schedule risks extrinsic to our own spacecraft or launch campaign that could, as in the past, affect schedules by weeks or more.

[...]
« Last Edit: 05/20/2025 08:15 pm by GewoonLukas_ »
Lukas C. H. • May the force be with you my friend, Ad Astra Per Aspera ✨️

Offline StraumliBlight

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Assuming this is ViaSat-3 F2, as it mentions the 702MP+ satellite bus.

1286-EX-ST-2025 [Jun 27]

Quote
Purpose: Short duration satellite Telemetry RF Functional Check at the launch site facility and in the fairing.

Astrotech Process Facility: Titusville, FL 32780
Coordinates: 28-31-32.8 N, 80-49-7.3 W

ULA Atlas Launch Pad SLC 41: Titusville, FL 32780
Coordinates: 28-35-0.7 N, 80-34-58.7 W

Operation Start Date: 07/18/2025
Operation End Date: 01/18/2026

There's also this Viasat STA (SES-STA-20250513-00681). [Jun 27]

Unfortunately the new ICFS is password protected for FCC authorised users only, so the Narrative is inaccessable.
« Last Edit: 06/27/2025 08:55 pm by StraumliBlight »

Does this imply that we will see another Atlas launch before Vulcan? Last ULA statement seemed to indicate Vulcan.

Offline russianhalo117

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Does this imply that we will see another Atlas launch before Vulcan? Last ULA statement seemed to indicate Vulcan.
No. Testing starts before the launch campaign, completes on orbit and is a six month testing window that can be renewed via modifications to the FCC. It is expected NET September (equals late summer)
« Last Edit: 06/28/2025 03:40 pm by russianhalo117 »

Offline tottaway22

Assuming this is ViaSat-3 F2, as it mentions the 702MP+ satellite bus.

1286-EX-ST-2025 [Jun 27]

Quote
Purpose: Short duration satellite Telemetry RF Functional Check at the launch site facility and in the fairing.

Astrotech Process Facility: Titusville, FL 32780
Coordinates: 28-31-32.8 N, 80-49-7.3 W

ULA Atlas Launch Pad SLC 41: Titusville, FL 32780
Coordinates: 28-35-0.7 N, 80-34-58.7 W

Operation Start Date: 07/18/2025
Operation End Date: 01/18/2026

There's also this Viasat STA (SES-STA-20250513-00681). [Jun 27]

Unfortunately the new ICFS is password protected for FCC authorised users only, so the Narrative is inaccessable.

I posted this in the launch manifest page, but figured here would be good too. ULA filed an STA for a Atlas V launch a couple months back and interestingly it states 2 satellites. Will they add the F3 to this launch?

ULA filed an STA for a Atlas V Launch on 4/15/2025 approved on 5/1/2025 for Atlas V Launches. It lists start of launch as 6/11/2025 in the Narrative and interestingly says it is for 2 satellites at 500km & 30deg.

"The Atlas V vehicle will be launched on an easterly trajectory from Eastern Range (ER) Launch
Complex 41 (SLC-41). A single Centaur main engine burn with a Guidance Commanded
Shutdown (GCS) will place the two spacecraft into a Low Earth Orbit (500 km circular at 30.0
deg inclination). Spacecraft separation will occur at approximately 18 minutes after
liftoff."

The only Atlas V booked outside of Kuiper is for ViaSat-3 EMA (I think same as ViaSat-3 F2?) which is a single, or is ViaSat adding a 2nd satellite to the launch like the ViaSat-3 F3 which was slated for early 2026?

https://apps.fcc.gov/els/GetAtt.html?id=373575&x=.

Offline Skyrocket

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Assuming this is ViaSat-3 F2, as it mentions the 702MP+ satellite bus.

1286-EX-ST-2025 [Jun 27]

Quote
Purpose: Short duration satellite Telemetry RF Functional Check at the launch site facility and in the fairing.

Astrotech Process Facility: Titusville, FL 32780
Coordinates: 28-31-32.8 N, 80-49-7.3 W

ULA Atlas Launch Pad SLC 41: Titusville, FL 32780
Coordinates: 28-35-0.7 N, 80-34-58.7 W

Operation Start Date: 07/18/2025
Operation End Date: 01/18/2026

There's also this Viasat STA (SES-STA-20250513-00681). [Jun 27]

Unfortunately the new ICFS is password protected for FCC authorised users only, so the Narrative is inaccessable.

I posted this in the launch manifest page, but figured here would be good too. ULA filed an STA for a Atlas V launch a couple months back and interestingly it states 2 satellites. Will they add the F3 to this launch?

ULA filed an STA for a Atlas V Launch on 4/15/2025 approved on 5/1/2025 for Atlas V Launches. It lists start of launch as 6/11/2025 in the Narrative and interestingly says it is for 2 satellites at 500km & 30deg.

"The Atlas V vehicle will be launched on an easterly trajectory from Eastern Range (ER) Launch
Complex 41 (SLC-41). A single Centaur main engine burn with a Guidance Commanded
Shutdown (GCS) will place the two spacecraft into a Low Earth Orbit (500 km circular at 30.0
deg inclination). Spacecraft separation will occur at approximately 18 minutes after
liftoff."

The only Atlas V booked outside of Kuiper is for ViaSat-3 EMA (I think same as ViaSat-3 F2?) which is a single, or is ViaSat adding a 2nd satellite to the launch like the ViaSat-3 F3 which was slated for early 2026?

https://apps.fcc.gov/els/GetAtt.html?id=373575&x=.

I guess, they accidentally copied the text from the Kuiper pathfinder launch.
The ViaSat-3 satellites won't go to LEO and they are far too large to be launched two at a time.

Offline GewoonLukas_

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Quote
Q1 FY2026 Shareholder Letter

[...]

For VS-3 F2 we completed implementation and testing of the corrective actions for the deployable reflectors and have begun the process of final flight installations and closeouts.  We have also completed ground operations and defined launch campaign schedules and launch day operational plans with our launch partner.  We expect to ship VS-3 F2 to the launch site by the end of next month (September 2025).

[...]

Lukas C. H. • May the force be with you my friend, Ad Astra Per Aspera ✨️

Offline Steven Pietrobon

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Q1 FY2026 Shareholder Letter

For VS-3 F2 we completed implementation and testing of the corrective actions for the deployable reflectors and have begun the process of final flight installations and closeouts.  We have also completed ground operations and defined launch campaign schedules and launch day operational plans with our launch partner.  We expect to ship VS-3 F2 to the launch site by the end of next month (September 2025).

Seem like late Summer (August) is out. Launch could be NET September.
« Last Edit: 08/06/2025 05:56 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline AmigaClone

Q1 FY2026 Shareholder Letter

For VS-3 F2 we completed implementation and testing of the corrective actions for the deployable reflectors and have begun the process of final flight installations and closeouts.  We have also completed ground operations and defined launch campaign schedules and launch day operational plans with our launch partner.  We expect to ship VS-3 F2 to the launch site by the end of next month (September 2025).

Seem like late Summer (August) is out. Launch could be NET September.

I'm used to using two definitions of when seasons begin, with the astronomical seasons starting or ending at the equinoxes or solstices. The meteorological seasons start and end approximately three weeks ahead the corresponding dates.

Even using the astronomical definition, it appears that the end of the 2025 northern hemisphere summer is not possible for this launch.

Offline GewoonLukas_

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Re: ULA Atlas V 551 - ViaSat-3 F2 - CCSFS SLC-41 - NET Q4 2025
« Reply #111 on: 09/04/2025 12:06 pm »
Launch has officially been scheduled for the second half of October. I suspect this will be the next launch after KA-03:

Quote
Viasat Announces ViaSat-3 F2 Scheduled to Launch in October, Expected to More Than Double Viasat’s Bandwidth Capacity
Sep 4, 2025

Viasat, Inc. (NASDAQ: VSAT), a global leader in satellite communications, today announced that the ViaSat-3 Flight 2 (F2) satellite is scheduled to launch aboard a United Launch Alliance (ULA) Atlas V551 from Space Launch Complex 41 (SLC-41) at Cape Canaveral Space Force Station, Florida in the second half of October 2025.

[...]

The precise ViaSat-3 F2 launch date and time will be provided closer to launch in conjunction with ULA.
« Last Edit: 09/04/2025 12:08 pm by GewoonLukas_ »
Lukas C. H. • May the force be with you my friend, Ad Astra Per Aspera ✨️

Offline Abdullah Hussain

Launch has officially been scheduled for the second half of October. I suspect this will be the next launch after KA-03:

Quote
Viasat Announces ViaSat-3 F2 Scheduled to Launch in October, Expected to More Than Double Viasat’s Bandwidth Capacity
Sep 4, 2025

Viasat, Inc. (NASDAQ: VSAT), a global leader in satellite communications, today announced that the ViaSat-3 Flight 2 (F2) satellite is scheduled to launch aboard a United Launch Alliance (ULA) Atlas V551 from Space Launch Complex 41 (SLC-41) at Cape Canaveral Space Force Station, Florida in the second half of October 2025.

[...]

The precise ViaSat-3 F2 launch date and time will be provided closer to launch in conjunction with ULA.

Yeah, Next ULA launch but then what happened to USSF-87. I think the new planning would be after KA-03
ViaSat-3 EMEA - Mid October
USSF-87 - Mid November
GPS-III 09 - December
KV-01 & KA-04 possibly between November and December.

Online DanClemmensen

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Re: ULA Atlas V 551 - ViaSat-3 F2 - CCSFS SLC-41 - NET Q4 2025
« Reply #113 on: 09/04/2025 04:03 pm »
Launch has officially been scheduled for the second half of October. I suspect this will be the next launch after KA-03:

Quote
Viasat Announces ViaSat-3 F2 Scheduled to Launch in October, Expected to More Than Double Viasat’s Bandwidth Capacity
Sep 4, 2025

Viasat, Inc. (NASDAQ: VSAT), a global leader in satellite communications, today announced that the ViaSat-3 Flight 2 (F2) satellite is scheduled to launch aboard a United Launch Alliance (ULA) Atlas V551 from Space Launch Complex 41 (SLC-41) at Cape Canaveral Space Force Station, Florida in the second half of October 2025.

[...]

The precise ViaSat-3 F2 launch date and time will be provided closer to launch in conjunction with ULA.

Yeah, Next ULA launch but then what happened to USSF-87. I think the new planning would be after KA-03
ViaSat-3 EMEA - Mid October
USSF-87 - Mid November
GPS-III 09 - December
KV-01 & KA-04 possibly between November and December.
I have no idea how much time VIF reconfiguration takes. If it takes significant time to reconfigure VIF-G back and forth between Atlas and Vulcan, then if may make sense to launch KA-04 either immediately before or immediately after ViaSat-3.

Offline catdlr

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Quote
Lukas C. H.@GewoonLukas_
·

Viasat has announced that the Atlas V 551 launch of their ViaSat-3 F2 satellite is scheduled for the 2nd half of next month! It was originally supposed to launch a few months after ViaSat-3 Americas in 2023, but the F1 antenna anomaly delayed it due to additional checks and work.

https://x.com/GewoonLukas_/status/1963627816437604812
It's Tony De La Rosa, ...I don't create this stuff, I report it. (now a moderator too - Watch out).

Offline catdlr

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Quote
Viasat@viasat
🛰️🚀 ViaSat-3 F2 is scheduled to launch in the second half of October aboard @ulalaunch
's Atlas V551 at Cape Canaveral Space Force Station, and is anticipated to provide more bandwidth capacity than the entire existing fleet when it comes into service:

ARTICLE:  https://vsat.co/4mH64eZ

https://twitter.com/viasat/status/1963584112255521234
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Online sstli2

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If they pull off launching in late October, that would be the fastest turnaround yet for ULA this year. I am curious to see if they can.

Offline DrTadd

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If they pull off launching in late October, that would be the fastest turnaround yet for ULA this year. I am curious to see if they can.

Is there any word on when the new VIF will be ready? It’s got to be close at this point.

Online sstli2

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If they pull off launching in late October, that would be the fastest turnaround yet for ULA this year. I am curious to see if they can.

Is there any word on when the new VIF will be ready? It’s got to be close at this point.

Tory Bruno being his usually vague self, the wording of which leads me to suspect that it will be later than previously planned, i.e. December.

Online ddspaceman

Lukas C. H.
@GewoonLukas_
After the successful launch of KA-03 yesterday, ULA confirmed that their next launch will be the ViaSat-3 F2 mission on another Atlas V 551.

ULA's next Project Kuiper launch is expected to be the KV-01 mission on Vulcan, which is set to launch before the end of the year.

https://twitter.com/GewoonLukas_/status/1971553883823771907

 

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