Beschreibung : FDC for NROL-65 launch. After deploying its payload, the rocket`s upper stage was deorbited after completing one orbit. The launch was the first Delta IV mission to use a new ignition sequence aimed at reducing damage to the first stage insulation caused by igniting a cloud of hydrogen around the vehicle at liftoff. To mitigate this, the rocket`s starboard engine was lit two seconds earlier than on previous flights.
Vandenberg post stamp.

USA 2994 A - picture enhanced ?

Seite : future · Ref: USA 2994 A

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NROL 65 · aka USA-245 or NRO Launch 65 · DELTA IV HEAVY · OPTICAL IMAGING