Author Topic: Atlas V 421 - SBIRS GEO-5 - Cape Canaveral SLC-41 - 18 May 2021 (17:37 UTC)  (Read 37584 times)

Online FutureSpaceTourist

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L-2 launch weather forecast, 90% GO

Online FutureSpaceTourist

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https://twitter.com/ulalaunch/status/1393602827898036225

Quote
Post-rollout operations are continuing at Space Launch Complex-41. The Atlas and Centaur rocket stages are being powered up for today's testing and RP-1 fueling activities. bit.ly/av_sbirsgeo5

Edit to add:

https://twitter.com/ulalaunch/status/1393637207668400130

Quote
Fueling of the #AtlasV first stage is underway at Cape Canaveral's Space Launch Complex-41. The launch team is pumping 25,000 gallons of RP-1 fuel, a highly refined kerosene, into the rocket for Monday's flight.

https://twitter.com/ulalaunch/status/1393641358079021061

Quote
The Atlas first stage RP-1 tank is nearly one-third full as fueling continues. It is standard practice to load kerosene into the first stage a few days, even a few weeks, before an #AtlasV launch.
« Last Edit: 05/15/2021 07:01 pm by FutureSpaceTourist »

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https://twitter.com/ulalaunch/status/1393651445929594886

Quote
The #AtlasV's first stage is loaded with room-temperature RP-1 fuel that will power the main engine during the initial phase of the #SBIRSGEO5 launch. Fueling of the rocket with cryogenic liquid oxygen and liquid hydrogen occurs during the final two hours of the countdown Monday.

Edit to add:

https://twitter.com/ulalaunch/status/1393665126935539715

Quote
The joint ULA, @SpaceForceDoD and @USSF_SMC team completed all of today's planned activities for rollout day and powered down the #AtlasV rocket. The next event will be starting the countdown on Monday morning. #PartnersinSpace

Live blog + webcast: bit.ly/av_sbirsgeo5
« Last Edit: 05/15/2021 08:50 pm by FutureSpaceTourist »

Online Rondaz

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Rocket Talk: Atlas V SBIRS GEO Flight 5


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https://twitter.com/ulalaunch/status/1393908153461452803

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🚀 Wondering how you can see the #AtlasV launch of #SBIRSGEO5? This visibility map shows when and where your best chances are to see the rocket in Florida and the Bahamas! Launch is scheduled for Monday at 1:35 p.m. EDT from Cape Canaveral.

bit.ly/av_sbirsgeo5

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https://twitter.com/spacecoast_stve/status/1393982485717979149

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Your friendly reminder to NOT stand here tomorrow at 1:35pm EDT/17:35 UTC.

#SBIRSGEO5 #AtlasV

Online Rondaz

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The Amazing Centaur III: Atlas V SBIRS GEO Flight 5


Online FutureSpaceTourist

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https://twitter.com/ulalaunch/status/1394242605035233283

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The countdown has begun for today's launch of #AtlasV to deploy the #SBIRSGEO5 missile warning satellite in service to @SpaceForceDoD. Launch time is 1:35pmEDT (1735 UTC) from Cape Canaveral. The live launch webcast starts 20 minutes before liftoff: bit.ly/av_sbirsgeo5

https://twitter.com/ulalaunch/status/1394246561350262786

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The application of power to the Atlas and Centaur stages is underway at the start of today's countdown procedures. The stages are being powered up to begin launch day testing and final preparations for fueling operations.

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https://twitter.com/ulalaunch/status/1394259104672198660

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We are counting down to today's launch at 1:35pmEDT (1735 UTC), and all systems are "go" here at the Atlas Spaceflight Operations Center and at Space Launch Complex-41. The #AtlasV guidance system test has started, the next major milestone in the count. bit.ly/av_sbirsgeo5

https://twitter.com/ulalaunch/status/1394265210618253321

Quote
In the day's first briefing, Launch Weather Officer Jessica Williams tells mission managers that the forecast for the #AtlasV #SBIRS launch today remains 90% favorable. There is little concern for violation of the weather rules this afternoon. bit.ly/av_sbirsgeo5

Offline TJL

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https://twitter.com/ulalaunch/status/1393908153461452803

Quote
🚀 Wondering how you can see the #AtlasV launch of #SBIRSGEO5? This visibility map shows when and where your best chances are to see the rocket in Florida and the Bahamas! Launch is scheduled for Monday at 1:35 p.m. EDT from Cape Canaveral.

bit.ly/av_sbirsgeo5
  Looks like the first viewing circle is situated too far "east"...should be placed directly over the Cape Canaveral area.

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https://twitter.com/ulalaunch/status/1394288240081965058

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All systems are "go" here at the Atlas Spaceflight Operations Center and at the Space Launch Complex-41 pad as we count down to today's #AtlasV launch of #SBIRS GEO-5 at 1:35pmEDT (1735 UTC). bit.ly/av_sbirsgeo5

https://twitter.com/ulalaunch/status/1394296792464957440

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Gaseous nitrogen has begun flowing into #AtlasV and the #SBIRS GEO-5 payload fairing to properly condition rocket compartments for today's fueling and flight.

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https://twitter.com/ulalaunch/status/1394305507184238610

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The launch pad crew has completed its hands-on work to ready Space Launch Complex-41 for today’s #AtlasV mission. Liftoff remains scheduled for 1:35pmEDT (1735 UTC). Monitor the countdown here: bit.ly/av_sbirsgeo5

https://twitter.com/ulalaunch/status/1394308025037598720

Quote
The countdown just entered the first of two planned holds scheduled in today's timeline. During this 15-minute hold, Launch Conductor Scott Barney will poll the team to verify all systems are ready to proceed into #AtlasV fueling operations. bit.ly/av_sbirsgeo5

Edit to add:

https://twitter.com/ulalaunch/status/1394311758005874690

Quote
The countdown has resumed and we are GO to fuel the #AtlasV rocket with 66,000 gallons of liquid oxygen and liquid hydrogen. ULA Launch Director Steve Huff has authorized cryogenic tanking operations. Liftoff remains targeted for 1:35pmEDT (1735 UTC). bit.ly/av_sbirsgeo5
« Last Edit: 05/17/2021 03:27 pm by FutureSpaceTourist »

Offline mrhuggy

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Theres a new launch time of 17:42 UTC due to collision avoidance.

Also theres chill down is taking longer than it should and is been looked at.

Source - https://24live.co/live/ULB1I?n=2788634168192471648

Offline mrhuggy

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From ULA's liveblog.


Quote
An unplanned hold is being inserted into the countdown at T-minus 1 hour, 35 minutes while the launch team examines the chilldown issue. Troubleshooting is underway.


https://24live.co/live/ULB1I?n=2788637086470923371

Offline RocketLover0119

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Another update from live blog just now:

“A special team is being dispatched to return to Space Launch Complex-41 for hands-on troubleshooting with the liquid oxygen supply system.”
"The Starship has landed"

Online DaveS

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Launch has been scrubbed for today. Another attempt is possible tomorrow:

"Launch Director Steve Huff has announced that we will not continue with countdown operations today. Launch Conductor Scott Barney has started leading his team through activities to safe the Atlas V rocket and Space Launch Complex-41 facilities following this scrub declaration.

Another launch attempt will be possible in 24 hours, with tomorrow's target liftoff time at 1:31 p.m. EDT (1731 UTC)."

https://www.24liveblog.com/live/ULB1I?n=2788637086470923371
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Offline zubenelgenubi

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Cross-post:
https://twitter.com/ulalaunch/status/1394338602604285963

Quote from: Tweet
The launch of a ULA AtlasV carrying the SBIRS GEO Flight 5 mission for the SpaceForceDOD USSF_SMC has been scrubbed. During Centaur liquid oxygen (LOX) chilldown operations, the team identified an anomalous system response that could not be resolved within the launch window.

Quote from: Tweet
Launch is now scheduled for 1:31 p.m. EDT on Tues., May 18, 2021.
***

EDIT Launch window length is 40 minutes (both May 17 and 18).
« Last Edit: 05/23/2021 09:34 pm by zubenelgenubi »
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Online FutureSpaceTourist

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L-1 launch weather forecast for tomorrow, 80% GO

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