RD874
Yuzhnoye Design Bureau
The RD874 is the integrated first stage propulsion system for Cyclone-4M and Cyclone-5 launch vehicles, comprising four clustered RD870 engines that together provide roll, pitch, and yaw control through individual gimballing. Employing tried-and-tested technologies of the Zenit launch vehicle and burning liquid oxygen and kerosene, the combined system produces 319.2 tf of sea-level thrust and […]
Typed specifications8 values
Discloses 5 of 10 fields engineers filter by in this category (category median 3).
- Mass
- 6 070 kg product page
- Thrust
- 3 130 282 680 mN product page 3 495 090 060 mN
- Specific impulse
- 303.2 s product page 338.7 s
- 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 supplier10 lines, in the manufacturer's own wording
- Propellants
- Liquid oxygen + kerosene
- Sea level thrust
- 319.2 tf
- Vacuum thrust
- 356.4 tf
- Specific impulse (sea level)
- 303.2 s
- Specific impulse (vacuum)
- 338.7 s
- Propellant mixture ratio
- 2.68
- Number of starts
- 1
- Number of engines
- 4 x RD870
- Dry weight
- 6,070 kg
- TRL
- 6
About
The RD874 is the integrated first stage propulsion system for Cyclone-4M and Cyclone-5 launch vehicles, comprising four clustered RD870 engines that together provide roll, pitch, and yaw control through individual gimballing. Employing tried-and-tested technologies of the Zenit launch vehicle and burning liquid oxygen and kerosene, the combined system produces 319.2 tf of sea-level thrust and 356.4 tf of vacuum thrust, with specific impulses of 303.2 seconds at sea level and 338.7 seconds in vacuum. The propellant mixture ratio is 2.68 with a single combined start. Dry weight of the four-engine cluster is 6,070 kg. The RD874 has achieved Technology Readiness Level 6, confirming demonstration in a relevant environment through Cyclone-4M ground development and testing.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.