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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.

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