United Launch Alliance (ULA) has postponed the launch of the National Reconnaissance Office’s classified NROL-47 spacecraft from its previous target of this month to no earlier than Jan. 10, 2018, to allow time to perform additional validation of the Delta IV rocket’s “Common Avionics” system—the suite of avionics, flight software and ground systems to be used by all Delta IV and Atlas V missions going forward. “This upgraded command and control system was ...


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