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
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.
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.
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.
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. #PartnersinSpaceLive blog + webcast: bit.ly/av_sbirsgeo5
🚀 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
Your friendly reminder to NOT stand here tomorrow at 1:35pm EDT/17:35 UTC.#SBIRSGEO5 #AtlasV
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
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.
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
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
https://twitter.com/ulalaunch/status/1393908153461452803Quote🚀 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
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
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.
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
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
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
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.
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.
Launch is now scheduled for 1:31 p.m. EDT on Tues., May 18, 2021.