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.
| Propellants components:
Oxidizer Fuel |
Liquid oxygen Kerosene |
| Ratio of fuel components | 2,62 |
| Vacuum thrust, 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 | |
