1 August 2016, 12:23 GMT
MOSCOW (Sputnik) — The contracted upgrades include replacing engine parts and materials, increasing engine reliability and reducing defects and failures during test flights.
Roscosmos also plans to improve the technological quality of engine production and ensure that the process adheres to the latest requirements.
The work is scheduled to complete by late November, 2018, while the contractor will be chosen on September 15.
The space corporation has been working to improve the reliability of its vehicles and infrastructure. On Monday, Roscosmos announced the allocation of some 1.8 billion rubles on making systems upgrades to ground facilities aimed at increasing the launch reliability of the Soyuz manned transport spacecraft and rocket complex as well as the Progress cargo spacecraft.
