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{{Infobox rocket stage
{{Infobox rocket stage
<!-- Basic information -->
<!-- Basic information -->
|name = Blok E<ref>http://www.russianspaceweb.com/lk-block-e.html</ref>
|name = Blok E<ref name="auto1">{{Cite web|url=http://www.russianspaceweb.com/lk-block-e.html|title=The many lives of the Soviet lunar landing engine|website=www.russianspaceweb.com}}</ref>


|image = Block_E_KB_Yuzhnoe.png
|image = Block_E_KB_Yuzhnoe.png
Line 23: Line 23:
|thrust = {{convert|20|kN|lbf|abbr=on}}<!--thrust provided by stage in kN, use {{convert}}, required-->
|thrust = {{convert|20|kN|lbf|abbr=on}}<!--thrust provided by stage in kN, use {{convert}}, required-->
|SI = {{convert|315|isp|abbr=on}}<!--specific impulse of stage in s-->
|SI = {{convert|315|isp|abbr=on}}<!--specific impulse of stage in s-->
|fuel = [[UDMH]]/[[N2O4]]<ref>http://www.astronautix.com/l/lk.html</ref><!--propellant used in stage, required-->
|fuel = [[UDMH]]/[[N2O4]]<ref>{{Cite web|url=http://www.astronautix.com/l/lk.html|title=LK|website=www.astronautix.com}}</ref><!--propellant used in stage, required-->
}}
}}


'''Blok E''' is the propulsion unit of [[Soviet Union|Soviet]] [[LK (spacecraft)|lunar module LK]], developed in 1960s by [[Yuzhnoye Design Bureau]] as a part of the [[Soviet Moonshot|manned lunar landing program]]<ref>http://www.russianspaceweb.com/lk-block-e.html</ref>.
'''Blok E''' is the propulsion unit of [[Soviet Union|Soviet]] [[LK (spacecraft)|lunar module LK]], developed in 1960s by [[Yuzhnoye Design Bureau]] as a part of the [[Soviet Moonshot|manned lunar landing program]]<ref name="auto1"/>.


Blok E was designed to soft land the LK on the surface of the Moon after orbital velocity was cancelled by [[Blok D|Block D]]. Later the same engine would fire for the second time for the liftoff and ascent from the Moon to rendezvous with the orbiting [[Soyuz 7K-LOK]].<ref>{{cite web |url=http://www.russianspaceweb.com/lk.html |title=LK spacecraft and Block E |publisher=Russianspaceweb.com |accessdate=2013-12-15 |url-status=dead |archiveurl=https://web.archive.org/web/20131230033358/http://www.russianspaceweb.com/lk.html |archivedate=2013-12-30 }}</ref><ref>{{cite web |url=http://www.yuzhnoye.com/media/video/technique/Liquid-propellant-propulsion-systems.html |title=Liquid propellant propulsion systems, Yuzhnoe Design Bureau |publisher=yuzhnoe.com |date= |accessdate=2014-07-10 |archive-url=https://web.archive.org/web/20140714122752/http://www.yuzhnoye.com/media/video/technique/Liquid-propellant-propulsion-systems.html |archive-date=2014-07-14 |url-status=dead }}</ref>
Blok E was designed to soft land the LK on the surface of the Moon after orbital velocity was cancelled by [[Blok D|Block D]]. Later the same engine would fire for the second time for the liftoff and ascent from the Moon to rendezvous with the orbiting [[Soyuz 7K-LOK]].<ref>{{cite web |url=http://www.russianspaceweb.com/lk.html |title=LK spacecraft and Block E |publisher=Russianspaceweb.com |accessdate=2013-12-15 |url-status=dead |archiveurl=https://web.archive.org/web/20131230033358/http://www.russianspaceweb.com/lk.html |archivedate=2013-12-30 }}</ref><ref>{{cite web |url=http://www.yuzhnoye.com/media/video/technique/Liquid-propellant-propulsion-systems.html |title=Liquid propellant propulsion systems, Yuzhnoe Design Bureau |publisher=yuzhnoe.com |date= |accessdate=2014-07-10 |archive-url=https://web.archive.org/web/20140714122752/http://www.yuzhnoye.com/media/video/technique/Liquid-propellant-propulsion-systems.html |archive-date=2014-07-14 |url-status=dead }}</ref>
Block E used [[RD-858]]<ref>https://space.skyrocket.de/doc_sdat/lk-t2k.htm</ref>, which has one nozzle and is deeply throttleable (from 2050&nbsp;kg to 858&nbsp;kg of thrust),<ref>{{cite web |url=http://www.astronautix.com/engines/rd858.htm |title=RD-858 |publisher=Astronautix.com |accessdate=2016-03-18 |url-status=dead |archiveurl=https://web.archive.org/web/20160326002726/http://astronautix.com/engines/rd858.htm |archivedate=2016-03-26 }}</ref> as the primary engine. The backup engine was [[RD-859]]<ref>https://space.skyrocket.de/doc_sdat/lk-t2k.htm</ref>, which has two nozzles. Engines were equipped with clam-shell doors to prevent damaging it while staying on the surface of the Moon. There were four additional vernier engines placed between main and backup engine nozzles.
Block E used [[RD-858]]<ref name="auto">{{Cite web|url=https://space.skyrocket.de/doc_sdat/lk-t2k.htm|title=LK (L3, T2K)|website=space.skyrocket.de}}</ref>, which has one nozzle and is deeply throttleable (from 2050&nbsp;kg to 858&nbsp;kg of thrust),<ref>{{cite web |url=http://www.astronautix.com/engines/rd858.htm |title=RD-858 |publisher=Astronautix.com |accessdate=2016-03-18 |url-status=dead |archiveurl=https://web.archive.org/web/20160326002726/http://astronautix.com/engines/rd858.htm |archivedate=2016-03-26 }}</ref> as the primary engine. The backup engine was [[RD-859]]<ref name="auto"/>, which has two nozzles. Engines were equipped with clam-shell doors to prevent damaging it while staying on the surface of the Moon. There were four additional vernier engines placed between main and backup engine nozzles.
== See also ==
== See also ==


Revision as of 21:23, 8 November 2019

Blok E[1]
ManufacturerYuzhnoye Design Bureau
Country of originSoviet Union
Used onN-1
General characteristics
Gross mass2,950 kg (6,500 lb)
Launch history
StatusRetired
Blok E[1]
Powered by11D410
Maximum thrust20 kN (4,500 lbf)
Specific impulse315 s (3.09 km/s)
PropellantUDMH/N2O4[2]

Blok E is the propulsion unit of Soviet lunar module LK, developed in 1960s by Yuzhnoye Design Bureau as a part of the manned lunar landing program[1].

Blok E was designed to soft land the LK on the surface of the Moon after orbital velocity was cancelled by Block D. Later the same engine would fire for the second time for the liftoff and ascent from the Moon to rendezvous with the orbiting Soyuz 7K-LOK.[3][4] Block E used RD-858[5], which has one nozzle and is deeply throttleable (from 2050 kg to 858 kg of thrust),[6] as the primary engine. The backup engine was RD-859[5], which has two nozzles. Engines were equipped with clam-shell doors to prevent damaging it while staying on the surface of the Moon. There were four additional vernier engines placed between main and backup engine nozzles.

See also

References

  1. ^ a b "The many lives of the Soviet lunar landing engine". www.russianspaceweb.com.
  2. ^ "LK". www.astronautix.com.
  3. ^ "LK spacecraft and Block E". Russianspaceweb.com. Archived from the original on 2013-12-30. Retrieved 2013-12-15.
  4. ^ "Liquid propellant propulsion systems, Yuzhnoe Design Bureau". yuzhnoe.com. Archived from the original on 2014-07-14. Retrieved 2014-07-10.
  5. ^ a b "LK (L3, T2K)". space.skyrocket.de.
  6. ^ "RD-858". Astronautix.com. Archived from the original on 2016-03-26. Retrieved 2016-03-18.


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