Retraction of the Mobile Service Tower has begun. An undercarriage transport system with drive trucks in all four corners of the MST is moving the 33-story building at a top speed of 0.25 miles per hour. bit.ly/div_nrol44
Rollback of the Space Launch Complex-37 tower is nearing completion. Preps are progressing for #NROL44.
The Mobile Service Tower at Space Launch Complex-37 has been retracted and secured in the launch position, revealing the United Launch Alliance #DeltaIVHeavy rocket for the #NROL44 launch. Follow our live launch blog for updates at: bit.ly/div_nrol44
An issue with a heater has been reported by the launch team. The issue is being referred to Anomaly Chief Dave McFarland for troubleshooting steps. The AC position in the control room that directs engineering teams work to resolve technical issues that arise during the count.
The ULA team is currently troubleshooting an issue with a heater on the launch vehicle. A team is being sent to the pad to attempt a fix. With the build-in hold having to be extended, a new T-0 will be announced once teams are ready to proceed. #NROL44 #DeltaIVHeavy
The #NROL44 launch team continues to stand by while pad technicians work through the heater issue at the pad. Once the issue is resolved, mission managers will establish a new target launch time and resume the countdown to begin #DeltaIVHeavy fueling tonight. Weather remains GO.
There is now a pneumatic issue that the launch teams are looking into. The countdown remains in an extended hold. #NROL44 #DeltaIVHeavy
Per ULA: While the heater issue is being worked, engineers are performing a precautionary data review of pressure measurements.
Anomaly Chief Dave McFarland in the Delta Operations Center reports successful resolution of the heater issue that technicians had been troubleshooting. The problem is resolved for launch of #DeltaIVHeavy tonight. bit.ly/div_nrol44
ULA says that the issue on a nosecone heater has been fixed. Two of six fuses were blown and have since been replaced. Teams are recommending that they proceed with the countdown. #NROL44 #DeltaIVHeavy
"[email protected]The pneumatics data review is continuing. We will be holding off on resumption of the #NROL44 countdown until that work is completed. Clocks are holding at T-minus 4 hours and 15 minutes."twitter.com/ulalaunch/status/1298839134165925888
The launch of the United Launch Alliance #DeltaIVHeavy #NROL44 mission was scrubbed today due to an issue with a critical ground pneumatics control system. The team needs additional time to evaluate and resolve the issue.
The launch is planned for Friday, Aug. 28 from Space Launch Complex-37 at Cape Canaveral Air Force Station. The forecast shows an 80 percent chance of favorable weather conditions for launch. The launch time is 2:08 a.m. EDT.
The mobile service tower is in place as @ulalaunch works the pneumatics issue that that scrubbed the early morning launch attempt for NROL-44. The @NASASpaceflight team is ready to continue coverage of the weekend launch events!nasaspaceflight.com/2020/08/ula-nr…
The launch of the United Launch Alliance #DeltaIVHeavy #NROL44 mission is now set for Sat., Aug. 29. Additional time is needed for the team to validate the appropriate path forward with the ground pneumatics control system.
The launch will take place from Space Launch Complex-37 at Cape Canaveral Air Force Station. The forecast shows an 80 percent chance of favorable weather conditions for launch. The launch time is 2:04 a.m. EDT. bit.ly/div_nrol44
Have you ever seen a rocket shadow cast into the sky? 🤔 Watch the @ulalaunch Delta IV emerge from the mobile service tower as day fades to night... then back into day again #timelapse #NROL44
Launch Date: Aug. 29, with a launch time of 2:04 a.m. EDT