RD-801

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Country of origin
Yuzhnoye Design Bureau
Yuzhmash
First Stage
In development
LOX / RG-1
2.65
Staged Combustion
1
1,340 kN (300,000 lbf)
1,198 kN (269,000 lbf)
18 MPa (2,600 psi)
336 s (3.30 km/s)
300.7 s (2.949 km/s)
200 s
6
1,630 kg (3,590 lb)

The RD801 (Ukrainian: РД801) is a Ukrainian liquid propellant rocket engine burning LOX and Kerosene (RG-1) in a staged combustion cycle. It has a single combustion chamber that provides thrust vector control by gimbaling of the nozzle in two axis by +/- 6°. It is being designed in Ukraine by Yuzhnoye Design Bureau for the prospective first stage propulsion of the Mayak rocket family.

The RD801 as well as the RD-810 are being designed based on the work of the RD-8 vernier and the maintenance and improvement of the RD-120 engines. The RD801 can be used stand alone on a Mayak or in a cluster.

The designers have proposed three versions of this engine:

• RD801 (Ukrainian: РД801): This is the basic module with no TVC.

• RD801 (Ukrainian: РД801): This is a version which includes a TVC by gimbaling of the nozzle in two axis by +/- 6°.

• RD801V (Ukrainian: РД801В): High altitude of the rocket engine with extended nozzle.

• Mayak – Prospective Ukrainian launch vehicle family for which the RD801 is being developed.

• RD-8 – The Zenit second stage vernier engine which was the technological base for the RD801.

• RD-120 – The Zenit second stage main engine which was the technological base for the RD801

• RD-810 – A higher thrust engine of the same family.

• Yuzhnoe Design Bureau – The RD810 designer bureau.

• Yuzhmash – A multi-product machine-building company that's closely related to Yuzhnoe and would manufacture the RD801.

• YF-100 – A Chinese rocket engine of similar specifications based on RD801 design.

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• Yuzhnoye Design Bureau English-language home page Archived 2021-06-29 at the Wayback Machine