The RD809K engine generates thrust and controls flight of the upper stages of the Mayak family rockets.
The engine is based on the Cyclone-4 rocket third-stage RD861K sustainer chamber and the Zenit rocket second-stage RD-8 steering engine assemblies. The staged-combustion RD809K is a single-chamber, single-mode engine with a turbo-pump-feed system
The engine gimbaling in two planes provides stage flight control. The engine is capable of multiple (up to 4) burns in flight.
The turbopump assembly turbine uses oxygen-rich gas as a working fluid. A starting fuel is used to ignite propellants in the chamber and the gas generator. The engine is currently in development.
Basic Specifications
|
Engine mass, kg |
330* |
|
Propellants: Oxidizer Fuel |
Liquid oxygen Kerosene |
|
Vacuum thrust, kgf |
10000 |
|
Vacuum specific impulse, kgf·s/kg |
352 |
|
Propellant mixture ratio |
2,62 |
|
Engine gimbal angle, ang.deg |
±5 |
|
Total running time in flight, s |
Up to 600 |
*Engine mass depends on number of ignitions in flight.
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