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Delta IV successfully launches powered by liquid hydrogen/liquid oxygen engines
© United Launch Alliance

Delta IV successfully launches powered by liquid hydrogen/liquid oxygen engines

The United Launch Alliance (ULA) successfully launched its Delta IV heavy launch vehicle using a liquid hydrogen/liquid oxygen engine in phase one and two of the lift-off.

The Delta IV rocket, carrying the NROL-82 mission for the National Reconnaissance Office (NRO), launched from the California, US Space Launch Complex-6 on the 26th of April at 1:47pm.

The rocket comprised of three common core boosters powered by an Aerojet Rocketdyne (AR) RS-68A liquid hydrogen/liquid oxygen engine producing a combined total of more than 2.1 million pounds of thrust in stage one of the launch.

The second stage was powered by an AR RL10B-2 liquid hydrogen/liquid oxygen engine.

Read more: Hypersonix joins the space race with hydrogen fuel

The ULA has successfully delivered more than 140 missions to orbit that aid meteorologists in tracking severe weather, unlock the mysteries of our solar system, provide critical capabilities for troops in the field, deliver cutting-edge commercial services and enable GPS navigation.

Gary Wentz, United Launch Alliance Vice-President of Government and Commercial programs, said “The unmatched power of the Delta IV Heavy again demonstrated its role as the nation’s proven heavy lift vehicle precisely delivering this critical NRO asset to its intended orbit.”

“We are honoured to support National Security space and thank our mission partners for their continued trust and teamwork.”

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