The assembly of the 11D58M engine for the Angara-A5 rocket has been successfully completed. This was reported by the press service of Roscosmos State Corporation.
The engine is used on the DM-type upper stage, flying in conjunction with the Proton launch vehicle (previously with the Zenit launch vehicle). Despite its compact size, it is considered one of the most complex to manufacture.
The 11D58M engine is designed for the upper stages of space rockets and DM upper stages, which are used to deliver spacecraft to target orbits, correct orbits, and control interorbital transfers. It operates on high-boiling-point fuel components (dimethylhydrazine as fuel and nitrogen tetroxide as an oxidizer). These substances self-ignite upon contact, which greatly simplifies the ignition system.
The engine's thrust in vacuum is about 78.5 kN (approximately 8 tons-force), and its specific impulse reaches 352-355 seconds.
One of the important features of the 11D58M is the multiple restart capability. The engine can be started up to 7 times in a single flight. This makes it possible to perform complex launch trajectories. The thrust vector is controlled by a swinging combustion chamber.
Earlier www1.ru reported that the Angara rocket launch complex will be tested in 2025.
