WATCH LIVE: ULA to Launch Delta IV Heavy Rocket #NROL-71 @8:44pm EST

A United Launch Alliance Delta 4-Heavy rocket will launch a classified spy satellite cargo for the U.S. National Reconnaissance Office. The largest of the Delta 4 family, the Heavy version features three Common Booster Cores mounted together to form a triple-body rocket.

Liftoff window begins at 11:06pm ETA

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Mission Information: United Launch Alliance will use the Delta IV Heavy rocket to launch the NROL-71 mission for the National Reconnaissance Office.

Launch Notes: This will be 132nd mission for United Launch Alliance and ULA's second Delta IV Heavy launch in less than four months. It is the 382nd Delta launch since 1960, the 38th for a Delta IV rocket since 2002 and the 11th Delta IV Heavy.

United Launch Alliance’s Delta IV rocket has served the nation’s high-priority U.S. Air Force and National Reconnaissance Office space programs with distinction since entering service in 2002. The vehicle also launched NASA’s Orion capsule on its first orbital test flight and sent the Parker Solar Probe on its journey to become the fastest robot in history while surfing through the sun’s atmosphere. Having flown 37 missions in a variety of configurations ranging from medium-lift to heavy-lifter, the Delta IV continues the legacy of the Delta rocket family that dates to 1960.

NROL-71 will launch aboard a Delta IV Heavy rocket features three hydrogen-fueled common booster coresand a Delta Cryogenic Second Stage. The payload is protected during atmospheric ascent by a composite payload fairing.

Courtsy of ULA
https://www.ulalaunch.com/
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