Private company

A.M. Isayev Chemical Engineering Design Bureau

Logo: A.M. Isayev Chemical Engineering Design Bureau, PD, via Wikipedia3

The A.M. Isayev Chemical Engineering Design Bureau (Russian: Конструкторское бюро химического машиностроения имени A.M. Исаева), also known as KB KhimMash or just KBKhM, is a Russian rocket engine design and manufacturing company. It is located in the city of Korolyov. It started as the OKB-2 division of the NII-88 research institute, where A.Isaev directed the development of liquid rocket engines for ballistic missile submarines.2 It was founded by Aleksey Isayev.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1946Founded1

The A.M. Isayev Chemical Engineering Design Bureau (Russian: Конструкторское бюро химического машиностроения имени A.M. Исаева), also known as KB KhimMash or just KBKhM, is a Russian rocket engine design and manufacturing company. It is located in the city of Korolyov. It started as the OKB-2 division of the NII-88 research institute, where A.Isaev directed the development of liquid rocket engines for ballistic missile submarines.2

The story

Founded by Aleksey Isayev in 1946.1

Leadership

Who has led A.M. Isayev Chemical Engineering Design Bureau, and when. Pick a name to see everywhere that person has worked.

Products and brands

Current engines

Engines in current production:

Monopropellant Thrusters

DOT-5

DOT-25

Read the full text

MLC-10

MLC-50

Bipropellant Thrusters

S5.142 (DST-25)

DST-50

DST-100

DST-100A

DST-200

DST-200A

DMT-6

DMT-500

DMT-600

DMT-1000

DMT-2200

Main propulsion

S5.80

S5.92

S5.98

KVD-1

Propulsion Modules

KTDU-80

Experimental Engines

S5.86.1000-0

Former engines

Engines that are no longer produced.

Monopropellant Thrusters

S5.70: Used on Phobos 1 spacecraft.

S5.70: Used on Phobos 1 spacecraft.

Bipropellant Thrusters

S5.144: Used on the control module 17D61 of the Ikar.

S5.205

Orbit Correction Engines

S5.4: Liquid engine burning TG-02 and AK20F in the gas generator cycle. Used to deorbit Vostok, Voskhod and Zenit.

S5.35: Backup engine of the KTDU-35.

S5.53: Orbital correction engine for the lunar version of the Soyuz.

S5.60: Main engine of the KTDU-35.

S5.66: Maneuvering engine version for the Salyut 1 and Salyut 4 stations. Also was composed of primary and secondary engines.

S5.79: Pressure-fed rocket engine burning N2O4/UDMH. Used as the main orbital engine of Salyut-6, Salyut-7, Mir Core Module and Zvezda.

Propulsion Modules

KDU-414: Pressure-fed liquid rocket engine burning UDMH and RFNA. Used on early soviet deep space probes.

KTDU-35: Liquid rocket engine burning UDMH and AK27I in the gas generator cycle. Used on first generation Soyuz, and Progress.

KTDU-425: Pump-fed liquid rocket engine. Used on the 4MV bus employed by unmanned Mars and Venus probes.

KTDU-426: Spacecraft version of the S5.79. Used on the Soyuz-T.

Military Missiles

RD-1

RD-1M

Y-1250

U-400-10

PT 45-2

SU-1500

Y-2000

S09.19A?

S09.29A S09.29.0-0

S09.29D

S09.29B

S09.29.0-OV?

S09.29.0-OV?

S2.145

S2.145

S2.168A

S2.168B

S2.219

S.911.0100 S2.219?

S2.244

S2.258

S2.260

S2.268

S2.514

S2.711

S2.711V S2.711V1

S2.720

S2.720.A2

S2.720M

S2.721 S2.721V

S2.722

S2.722V

S2.726

S2.727

S2.751V?

S2.1100: A TG-02/AK20K burning engine. Development years: 1955–1958. For use in the booster module of the Burya intercontinental cruise missile project.

S2.1150: An improved version of the S2.1100. Development years: 1958–1960. For use in the booster module of the Burya project.

S2.1200

S5.1

S.5.6.0000.0

S5.15

S5.33

S5.33A S5.33M

S5.41

S5.44 5D25

S5.57

S5.44 5D25

5D25N

S5.83

Rocket engines for ICBM and SLBM

S2.253 (8D511): A kerosene/AK20 burning engine in the pressure fed cycle. Development years: 1951-1955. For use in first versions of Scud-A. Ignition by hypergolic start fuel TG-02.

S2.253A: A kerosene/AK-20 burning engine in the pressure fed cycle. Development years: 1953-1959. For use in the RSM-11FM. Ignition by hypergolic start fuel TG-02.

S2.713: A TG-02/AK27I burning engine in the gas generator cycle. Development years: 1956-1961. For use in the R-13. It included a fixed nozzle and four verniers.

S5.2 (9D21): A TM-185/AK-27I burning engine in the gas generator cycle. Development years: 1959-1962. For use in the R-17.

S5.3: A TG-02/AK-27I burning engine in the gas generator cycle. Development years: 1958-1963. For use in the R-21.

S5.3M: A TG-02/AK-27I burning engine in the gas generator cycle. Development years: 1960. Project for the ICBM R-9B.

4D10: A UDMH/N2O4 burning engine in the staged combustion cycle. Development years: 1962-1968. For use as main engine of the first stage of R-27. First engine submerged in the propellant tank.

4D10: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1963-1968. For use as the steering engine of the first stage of the R-27. Submerged in the propellant tank.

4D76: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1964-1971. For use as main engine of the second stage of R-29. Submerged in the propellant tank.

4D76M: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1969-1970. Improved version of the 4D-76.

4D28: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1968-1970. For use on the second stage of the rocket RSM-27K.

3D20: A UDMH/N2O4 burning engine in the staged combustion cycle. Development years: 1971-1973. For use as main engine RSM-27U.

3D20: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1971-1973. For use as steering engine R-27U.

3D41: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1973-1975. For use on the second stage of R-29R. Submerged in the propellant tank.

3D42: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1973-1975. For use on warhead of the R-29R. Four fixed main combustion chambers and four verniers.

3D67?: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1976-1980. For use on warhead of the R-39. Dual-mode rocket engine with multiple regimen.

3D36: A UDMH/N2O4 burning engine in the gas generator cycle. Development years: 1980-1986. For use on warhead of the R-29RM.

3D38: A UDMH/N2O4 burning engine in the staged combustion cycle. Development years: 1980-1986. For use on the second stage R-29RM. Submerged in the propellant tank.

3D39: A UDMH/N2O4 burning engine in the staged combustion cycle. Development years: 1980-1986. For use on the third stage R-29RM. Submerged in the propellant tank.

From Wikipedia’s article on A.M. Isayev Chemical Engineering Design Bureau, shared under CC BY-SA 4.0.4

Acquisitions

  1. Succeeded by MKB Fakel1

Timeline

  1. 1946Founded Founded1