RD809K
Yuzhnoye Design Bureau
The RD809K is a restartable single-chamber staged combustion cryogenic rocket engine developed by Yuzhnoye SDO for upper stage pitch and yaw control applications. Derived from proven Zenit launch vehicle heritage components and technology, it burns liquid oxygen and kerosene propellants, producing 10 tf of vacuum thrust with a high specific impulse of 352 seconds. The […]
Typed specifications6 values
Discloses 5 of 10 fields engineers filter by in this category (category median 3).
- Mass
- 330 kg product page
- Thrust
- 98 066 500 mN product page
- Specific impulse
- 352 s product page
- Propellant
- oxygen product page kerosene (RP-1)
- TRL
- 6 product page
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier8 lines, in the manufacturer's own wording
- Propellants
- O2 + kerosene
- Vacuum thrust
- 10 tf
- Specific impulse (vacuum)
- 352 s
- Propellant mixture ratio
- 2.62
- Number of starts
- Up to 4
- Engine weight (excl. gimbal drives)
- 330 kg
- Cycle
- Staged combustion
- TRL
- 6
About
The RD809K is a restartable single-chamber staged combustion cryogenic rocket engine developed by Yuzhnoye SDO for upper stage pitch and yaw control applications. Derived from proven Zenit launch vehicle heritage components and technology, it burns liquid oxygen and kerosene propellants, producing 10 tf of vacuum thrust with a high specific impulse of 352 seconds. The engine supports up to 4 restarts, enabling complex multi-burn upper stage trajectories including lunar orbit injection from LEO and GTO-to-GEO transfers. Weighing 330 kg excluding gimbal drives, the RD809K has achieved Technology Readiness Level 6. It is planned as the propulsion unit for the Cyclone-1 upper stage and serves as the primary engine for the Lunar Booster Stage (two engines) in the Mayak lunar exploration architecture.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.