RD-801
The RD801 is a Ukrainian liquid propellant rocket engine burning LOX and Kerosene in a Staged [combustion cycle (rocket)|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.