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Soyuz 7K-L1S

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AKA: 7K-L1S. First Launch: 1969-02-21. Last Launch: 1969-07-03. Number: 2 .

• L1 to be capable of being used in either the direct flight or podsadka schemes. - . Related Persons: Korolev, Mishin. Spacecraft: Soyuz 7K-L1, Soyuz 7K-L1S.

  Korolev made the decision on 16 Sept 1965 that the L1 would be a single-design spacecraft, capable of being used in either the direct flight or podsadka schemes. At some point thereafter, it seems the version for podsadka was designated L1s (perhaps for L1 stykoviy, L1-docking). (Mishin Diaries 1-178)

• Discussion of L1S Docking Complex / Landing System tests. - . Related Persons: Mishin. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-L1S. Leave factory December 66; arrive test point January 67; Independent testing from March 67. (Mishin Diaries 1-220).

• Earth-to-Space equipment for the 7K-OK, 7K-L1, and 7K-L1S - . Related Persons: Mishin, Chertok. Spacecraft: Soyuz, Soyuz 7K-L1, Soyuz 7K-L1S, Soyuz 7K-OK. Message from BE Chertok on the development of Earth-to-Space equipment for the 7K-OK, 7K-L1, and 7K-L1S' (Mishin Diaries 3-9)..

• Commonality of theme for the L1 and L1S. - . Related Persons: Mishin, Litvinov, . Spacecraft: Soyuz, Soyuz 7K-L1, Soyuz 7K-L1S, Soyuz 7K-LOK. Mishin makes a note for himself (Mishin Diaries 1-284-285): "Get photos for VYa Litvinov of Blok D, 7K-L-1, 7K-L1S", indicating a commonality of theme for the L1 and L1S..

• Mishin discussion with NA Pilyugin - On the supply of (guidance) equipment for the 7K-L1S. - . Related Persons: Mishin, Pilyugin, . Spacecraft: Soyuz, Soyuz 7K-L1, Soyuz 7K-L1S. (Mishin Diaries 1-319).

• N1-L3 launch schemes - . Related Persons: Mishin. Spacecraft: Soyuz 7K-L1, Soyuz 7K-L1S, Soyuz 7K-L3S, Soyuz 7K-LOK, LK, Luna Ye-8.

  Mishin meeting with his guidance expert, NA Pilyugin, to consider the possibility of 2 launch schemes: with Ye-8 and without Ye-8 OV. All possibilities to improve the accuracy of the landing without the Ye-8 were to be examined. The first N1 missions would rehearse the two-launch scenario, with the Ye-8 being launched by a UR-500K and an L3S (orbital version of the L1S) standing in for the LOK (no LK being available yet).