Description

The engine is based on RD-8 steering engine assemblies.

The staged-combustion RD-809K is a single-chamber, single-mode engine with a turbo-pump-feed system. The turbo pump assembly turbine uses oxygen-rich gas as a working fluid

The RD-809K engine generates thrust and controls flight of the upper stages of the Mayak family rockets.

Specifications

Propellants:

Oxidizer

Fuel

 

Liquidoxygen

Kerosene

Ratio of fuel components 2,62
Vacuumthrust, kgf 10
Vacuum specific impulse, kgf·s/kg 352
The pressure in the combustion chamber, kgf/сm2 100
The pressure at the nozzle exit, кgf/сm2 0.029
Engine mass, kg 330
Number of restarts 2
Total running time in flight, s 600
The swing plane 2
Engine gimbal angle, ang.deg 5
Note: These are preliminary characteristics of the engine