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→Mission details: Fixed a typo in the word "maneuvering".
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{{Infobox spaceflight
| name = Soyuz 1
| image = The Soviet Union
| image_caption = 1964 commemorative stamp of Vladimir Komarov
| image_size = 290px
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| landing_date = 24 April 1967, 03:22:52 GMT
| landing_site = 3 km
| crew_size = 1
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|terminology = Cosmonaut
|position1 = Pilot
|crew1_up = {{flagicon|URS}} [[Vladimir Komarov]]
|flights1_up = Second and last
}}
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|terminology = Cosmonaut
|position1 = Pilot
|crew1_up = {{flagicon|URS}} [[Yuri Gagarin]]
}}
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== Background ==
Soyuz 1 was the first crewed flight of the first-generation [[Soyuz 7K-OK]] spacecraft and [[Soyuz rocket]], designed as part of the [[Soviet crewed lunar programs|Soviet lunar program]]. It was the first Soviet crewed spaceflight in over two years, and the first Soviet crewed flight following the death of the Chief Designer of the space
According to interviews with Venyamin Russayev, a former [[KGB]] agent, prior to launch, Soyuz 1 engineers are said to have reported 203 design faults to party leaders, but their concerns "were overruled by political pressures for a series of space feats to mark the anniversary of [[Lenin]]'s birthday".<ref name="BBC"/>
Mission planners intended to launch a [[Soyuz 2A|second Soyuz flight]] the next day carrying cosmonauts [[Valery Bykovsky]], [[Yevgeny Khrunov]], and [[Aleksei Yeliseyev]], with Khrunov and Yeliseyev scheduled to do an [[Extravehicular activity|EVA]] over to Soyuz 1.
== Mission details ==
Soyuz 1 was launched on 23 April 1967 at 00:32 GMT from [[Baikonur Cosmodrome]] carrying Komarov, the first Soviet cosmonaut to fly in space twice, in the 7K-OK No. 4 capsule.<ref>[https://www.russianspaceweb.com/soyuz1-decision.html Final decision to launch Soyuz-1] ''wonderdome.co.uk'', accessed 26 December 2022</ref> Problems began shortly after launch when one solar panel failed to unfold, leading to a shortage of power for the spacecraft's systems. Further problems with the orientation detectors complicated maneuvering the craft. By orbit 13, the automatic stabilisation system was completely dead, and the manual system was only partially effective.
The crew of Soyuz 2 modified their mission goals, preparing themselves for a launch that would include fixing the solar panel of Soyuz 1. However, that night, thunderstorms at
As a result of Komarov's report during the 13th orbit, the [[Flight controller|flight director]] decided to abort the mission. After 18 orbits, Soyuz 1 fired its [[retrorocket]]s and [[Atmospheric reentry|reentered]] the [[Atmosphere of Earth|Earth's atmosphere]]. Despite the technical difficulties up to that point, Komarov might still have landed safely. A few minutes before the tragedy, Komarov maintained radio contact with Gagarin, in particular, stating: "The engine was running for 146 seconds. Everything is going fine. Everything is going fine! The ship was oriented correctly. I am in the middle chair. Tied with straps."<ref>[https://www.kp.ru/daily/26669.3/3689755/ Трагедия «Союза-1»: Почему разбился космонавт Владимир Комаров]. In Russian</ref> To slow the descent, first the [[drogue parachute]] was deployed, followed by the main parachute. However, due to a defect, the main parachute did not unfold; the exact reason for the main parachute malfunction is disputed.<ref>{{cite web|url=http://www.friends-partners.org/pipermail/fpspace/2000-October/000717.html|title=The Red Stuff|website=friends-partners.org|date=24 October 2000|access-date=9 April 2012|archive-date=17 March 2014|archive-url=https://web.archive.org/web/20140317105517/http://www.friends-partners.org/pipermail/fpspace/2000-October/000717.html|url-status=dead}}</ref><ref>{{cite web |url=http://www.russianspaceweb.com/soyuz1.html|title=The Soyuz-1 accident investigation|access-date=5 January 2015}}</ref>
Komarov then activated the manually deployed reserve chute, but it became tangled with the drogue chute, which did not release as intended. As a result, the [[Soyuz (spacecraft)#Descent module|Soyuz descent module]] fell to
The Soyuz 1 crash site coordinates are {{Coord|51.3609|N|59.5624|E}}, which is {{cvt|3|km}} west of Karabutak,
Posthumously, Komarov was
Eight years after Komarov's death, a story began circulating that Komarov cursed the engineers and flight staff, and spoke to his wife as he descended,<ref>{{cite web |url=http://www.astronautix.com/s/soyuz1.html|publisher=Encyclopedia Astronautica|title=Soyuz 1|access-date=2009-04-15}}</ref> and these transmissions were received by an [[National Security Agency|NSA]] listening station near [[Istanbul]].<ref name="npr-retold">{{cite web|last1=Krulwich|first1=Robert|title=A Cosmonaut's Fiery Death Retold|url=https://www.npr.org/sections/krulwich/2011/05/03/135919389/a-cosmonauts-fiery-death-retold|website=npr.org|archive-url=https://web.archive.org/web/20190503223325/https://www.npr.org/sections/krulwich/2011/05/03/135919389/a-cosmonauts-fiery-death-retold|date=5 May 2011 |archive-date=3 May 2019}}</ref> Historians such as [[Asif Azam Siddiqi]] regard this to be untrue.<ref name="npr-retold"/><ref>French, Francis and Burgess, Colin. "In the Shadow of the Moon". University of Nebraska Press, 2007, p. 181</ref>▼
▲Eight years after Komarov's death, a story began circulating that Komarov cursed the engineers and flight staff, and spoke to his wife as he descended,<ref>{{cite web |url=http://www.astronautix.com/s/soyuz1.html|archive-url=https://web.archive.org/web/20160820192411/http://www.astronautix.com/s/soyuz1.html|url-status=dead|archive-date=20 August 2016|publisher=Encyclopedia Astronautica|title=Soyuz 1|access-date=2009-04-15}}</ref> and these transmissions were received by an [[National Security Agency|NSA]] listening station near [[Istanbul]].<ref name="npr-retold">{{cite web|last1=Krulwich|first1=Robert|title=A Cosmonaut's Fiery Death Retold|url=https://www.npr.org/sections/krulwich/2011/05/03/135919389/a-cosmonauts-fiery-death-retold|website=npr.org|archive-url=https://web.archive.org/web/20190503223325/https://www.npr.org/sections/krulwich/2011/05/03/135919389/a-cosmonauts-fiery-death-retold|date=5 May 2011 |archive-date=3 May 2019}}</ref> Historians such as [[Asif Azam Siddiqi]] regard this to be untrue.<ref name="npr-retold"/><ref>French, Francis and Burgess, Colin. "In the Shadow of the Moon". University of Nebraska Press, 2007, p. 181</ref> Komarov final recorded words appear to have been a conversation with a tracking station located near [[Simferopol]] on the topic of the separation of the Soyuz modules just before reentry.<ref name=SiddiqPPP36 /> With the final message received being『Спасибо, передайте всем Произошло』("Thank you, tell everyone it happened") [Garbled].<ref name=SiddiqPPP36>{{cite book |last=Siddiqi |first=Asif |author-link=Asif Azam Siddiqi |date=2020 |title=Soyuz 1 The Death of Vladimir Komarov Pressure, Politics, and Parachutes |publisher=SpaceHistory101.com Press |pages=36–37|isbn=9781887022958}}</ref><ref name=SiddiqPPP73>{{cite book |last=Siddiqi |first=Asif |author-link=Asif Azam Siddiqi |date=2020 |title=Soyuz 1 The Death of Vladimir Komarov Pressure, Politics, and Parachutes |publisher=SpaceHistory101.com Press |page=73|isbn=9781887022958}}</ref>
▲Komarov was posthumously named a [[Hero of the Soviet Union]] for the second time. He was given a [[state funeral]], and his ashes were interred in the [[Kremlin Wall Necropolis]] at [[Red Square]], Moscow.<ref name="BBC">{{cite news|title=24 April 1967: Russian cosmonaut dies in space crash|url=http://news.bbc.co.uk/onthisday/hi/dates/stories/april/24/newsid_2523000/2523019.stm|work=On This Day|publisher=BBC|date=24 April 1967|access-date=15 April 2009}}</ref>
== Legacy ==
The Soyuz 1 tragedy delayed the launch of [[Soyuz 2]] and [[Soyuz 3]] until 25 October 1968. This 18-month gap, with the addition of the explosion of an uncrewed [[N-1 rocket]] on 3 July 1969, scuttled Soviet plans of landing a cosmonaut on the Moon. The original mission of Soyuz 1 and Soyuz 2 was ultimately achieved by [[Soyuz 4]] and [[Soyuz 5]].
A much improved Soyuz
Komarov is commemorated in two memorials left on the lunar surface: one left at [[Tranquility Base]] by [[Apollo 11]],<ref>{{cite book|last=Aldrin|first=Buzz|last2=McConnell|first2=Malcolm|title=Men from Earth |publisher=Bantam|
== References ==
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