The Russian space agency's first Angara-A5 heavy-lift rocket launches on its maiden test flight from the Plesetsk Cosmdrome in northern Russia on Dec. 23, 2014.

WASHINGTON — The Russian space agency, Roscosmos, successfully demonstrated the heavy-lift version of its long-awaited Angara series of rockets Dec. 23 from the Plesetsk Cosmosrome in northern Russia, the agency said.

The Angara-A5 successfully placed a 2-ton dummy payload into geosynchronous orbit some nine hours after lifting off at 8:57 a.m. local time, according to the Moscow-based Khrunichev State Research and Space Production Center, the vehicle's prime contractor.

The rocket featured three common-core stages fueled by liquid oxygen and kerosene and was topped by a flight-proven Breeze-M upper stage. The total liftoff mass was 768 metric tons, Khrunichev said. [Best Russian Space Missions of All Time]

After separating from the third stage, the Breeze-M delivered the dummy payload to the desired orbit. As planned, the upper stage remained attached to the dummy payload, and subsequently performed two additional maneuvers to reach a graveyard orbit, Khrunichev said.

Angara is a modular series of rockets designed to launch different classes of payloads to various orbits. The heavy-lift version will enable Russia to launch geostationary-orbiting satellites from its own territory. Currently such satellites are launched from the Baikonur Cosmodrome in Kazakhstan aboard the Proton rocket, which uses a highly toxic hydrazine fuel.

The Angara-A5 flight follows the successful launch in July of a smaller version of the family, Angara 1.2, on a suborbital mission.

This story was provided by SpaceNews, dedicated to covering all aspects of the space industry.