RD805
Yuzhnoye Design Bureau
The RD805 is a single-chamber staged combustion cryogenic rocket engine developed by Yuzhnoye SDO, utilizing an oxidizer-rich preburner cycle and incorporating tried-and-tested components from the highly reliable, serially produced steering engine RD-8 used on the Zenit launch vehicle. It burns liquid oxygen and kerosene propellants, producing 2.15 tf of vacuum thrust with a high specific […]
Key figurescomparable across the catalogue
- Mass
- 80 kg
- Thrust
- 2.15 N
- Specific impulse
- 345 s
- TRL
- 4
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Propellants
- O2 + kerosene
- Vacuum Thrust
- 2.15 tf
- Specific Impulse (vacuum)
- 345 s
- Propellant Mixture Ratio
- 2.5
- Number of Starts
- 1
- Engine Weight (excl. gimbal drives)
- 80 kg
- Cycle
- Staged combustion (oxidizer-rich preburner)
- TRL
- 4
About
The RD805 is a single-chamber staged combustion cryogenic rocket engine developed by Yuzhnoye SDO, utilizing an oxidizer-rich preburner cycle and incorporating tried-and-tested components from the highly reliable, serially produced steering engine RD-8 used on the Zenit launch vehicle. It burns liquid oxygen and kerosene propellants, producing 2.15 tf of vacuum thrust with a high specific impulse of 345 seconds. The staged combustion cycle offers higher efficiency compared to gas generator cycles used in older engine designs. The engine supports a single start, weighs 80 kg excluding gimbal drives, and is in development for advanced upper stage applications. Technology Readiness Level of 4 indicates validation in laboratory and subscale environments.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.