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Spaceflight Now
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Spaceflight Now Mar 16
SpaceX’s Falcon Heavy rocket could launch on its first commercial flight as soon as April 7. SpaceX will re-fly the side boosters on a Falcon Heavy launch this summer in a key demonstration for the Air Force to move closer to certifying reused rockets.
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Spaceflight Now Mar 15
Using a version of its Delta 4 rocket family nearing retirement, United Launch Alliance successfully delivered the WGS 10 broadband communications satellite to orbit for the US Air Force on Friday night. FULL STORY:
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Spaceflight Now Mar 15
Here’s a picture from showing the Delta 4 rocket climbing away from its launch pad tonight.
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Spaceflight Now Mar 15
WGS 10 separation confirmed! The US Air Force’s Boeing-built WGS 10 communications satellite has separated from the Delta 4 rocket’s second stage.
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Spaceflight Now Mar 15
RL10B-2 engine shutdown confirmed. The Delta 4’s second stage has completed its second burn tonight, placing the US Air Force’s WGS 10 communications satellite into the targeted elliptical transfer orbit. Coming up on spacecraft separation.
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Spaceflight Now Mar 15
The RL10B-2 engine has reignited to accelerate the WGS 10 military communications satellite into a higher orbit.
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Spaceflight Now Mar 15
The Delta 4’s upper stage RL10B-2 engine has shut down after the first of two burns required to place the WGS 10 military communications satellite into a high-altitude transfer orbit. Next burn in less than 10 minutes.
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Spaceflight Now Mar 15
The Delta 4’s upper stage RL10B-2 engine is now firing as the rocket heads east over the Atlantic Ocean with the WGS 10 military communications satellite.
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Spaceflight Now Mar 15
Liftoff of the Delta 4 rocket from Cape Canaveral, boosting the Air Force’s newest communications satellite into orbit.
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Spaceflight Now Mar 15
All stations are confirmed “go” for launch of the Delta 4 rocket at 8:26pm EDT (0026 GMT) carrying the US Air Force’s WGS 10 communications satellite. WATCH LIVE:
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Spaceflight Now Mar 15
The Delta 4 team has set a new target launch time of 8:26pm EDT (0026 GMT).
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Spaceflight Now Mar 15
The Delta 4 countdown will remain in a hold as teams address a problem with NASA’s Tracking and Data Relay Satellite System. The network is required to relay telemetry from the rocket when it is not over a ground station.
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Spaceflight Now Mar 15
NASA’s network of tracking and data relay satellites is reported to be “red” at this time. This network is used to relay telemetry from the Delta 4 rocket back to the ground.
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Spaceflight Now Mar 15
NEW LAUNCH TIME of 7:52pm EDT (2352 GMT) for the Delta 4 rocket. Watch live:
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Spaceflight Now Mar 15
The Delta 4 team has closed out the first stage helium pressurization issue, but engineers continue to look at an apparent issue in the upper stage liquid oxygen system.
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Spaceflight Now Mar 15
ULA’s launch team has discussed the two technical issues, and engineers recommend proceeding with the Delta 4 countdown this evening. Standing by for a new launch time.
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Spaceflight Now Mar 15
As troubleshooting continues on the Delta 4’s first stage helium system, engineers are now investigating an alarm on the rocket’s second stage. Tonight’s launch window extends until 9:05pm EDT (0105 GMT).
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Spaceflight Now Mar 15
The Delta 4 countdown will remain in a hold as United Launch Alliance troubleshoots an issue with a pneumatic system. Liftoff will not occur at 7:11pm EDT (2311 GMT).
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Spaceflight Now Mar 15
The Delta 4 launch team is currently examining a technical issue with the first stage.
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Spaceflight Now Mar 15
The Delta 4 countdown is in a pre-planned hold. Coming up on final polling of the launch team for a “go” to proceed with the final countdown. Launch remains set for 2311 GMT (7:11pm EDT).
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