The KTDU-35 (
GRAU
The Main Missile and Artillery Directorate of the Ministry of Defense of the Russian Federation (), commonly referred to by its transliterated Russian acronym GRAU (), is a department of the Russian Ministry of Defense. It is subordinate to the ...
Index 11D62) was a
Soviet spacecraft propulsion system composed of two
liquid
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of the four fundamental states of matter (the others being solid, gas, a ...
rocket engines, the primary, S5.60 (SKD) and the secondary S5.35 (DKD), fed from the same propellant tanks. Both engines burn
UDMH and
AK27I in the
gas generator cycle.
It was designed by
OKB-2, the famous
Isaev Design Bureau, for the original
Soyuz programme.
Within the
Soyuz and
Progress, the SKD is the primary engine, the DKD is the backup engine for main orbital correction and de-orbit operations. The engine generate (SKD) or (DKD) of thrust with a
specific impulse of 278 seconds and 270 seconds, respectively. The SKD nozzle is fixed in the aft of the craft, and the dual DKD nozzles are on either side. The spacecraft attitude system (DPO) is responsible for pointing the vehicle in the correct direction and keep it that way during SKD burns.
Versions
This engine has been used in three variants:
* S5.53: Orbital correction engine for the
lunar
Lunar most commonly means "of or relating to the Moon".
Lunar may also refer to:
Arts and entertainment
* ''Lunar'' (series), a series of video games
* "Lunar" (song), by David Guetta
* "Lunar", a song by Priestess from the 2009 album ''Prior t ...
version of the
Soyuz.
* S5.60 (AKA KTDU-35
GRAU
The Main Missile and Artillery Directorate of the Ministry of Defense of the Russian Federation (), commonly referred to by its transliterated Russian acronym GRAU (), is a department of the Russian Ministry of Defense. It is subordinate to the ...
Index 11D62): Version for the
LEO
Leo or Léo may refer to:
Acronyms
* Law enforcement officer
* Law enforcement organisation
* ''Louisville Eccentric Observer'', a free weekly newspaper in Louisville, Kentucky
* Michigan Department of Labor and Economic Opportunity
Arts an ...
version of the
Soyuz.
* S5.66 (AKA KTDU-66): Maneuvering engine version for the
Salyut 1 and
Salyut 4
Salyut 4 (DOS 4) (russian: Салют-4; English translation: Salute 4) was a Salyut space station launched on December 26, 1974 into an orbit with an apogee of 355 km, a perigee of 343 km and an orbital inclination of 51.6 degrees. It ...
stations. Increased burn time to 1000 seconds and increased number of starts. Also was composed of primary and secondary engines.
See also
*
Soyuz 7K-OK
*
Soyuz 7K-OKS
Soyuz 7K-OKS (also known as Soyuz 7KT-OK) is a version of the Soyuz spacecraft and was the first spacecraft designed for space station flights. Its only crewed flights were conducted in 1971, with Soyuz 10 and Soyuz 11.
Design
The two craft ...
*
Soyuz 7K-T
*
Soyuz 7K-TM
*
Progress 7K-TG
*
Isaev
*
S5.4
The S5.4 (AKA TDU-1, GRAU Index 8D66), was a Russian liquid rocket engine burning TG-02 and AK20F in the gas generator cycle. It was originally used as the braking (deorbit) engine of the Vostok, Voskhod, and Zenit spacecraft, which later swit ...
References
External links
KB KhIMMASH Official Page (in Russian)
Rocket engines of Russia
Rocket engines of the Soviet Union
Rocket engines using hypergolic propellant
{{rocket-stub