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Crewed Spaceflight Salyut Soyuz

Soyuz 11

Soyuz 11After a tuberculosis scare forces Soviet space officials to ground the mission’s original crew, the backup crew of Soyuz 11 lifts off to become the first occupants of a manned space station. Experiencing none of the difficulties that plagued the earlier Soyuz 10 attempt to dock with Salyut 1, the Soyuz 11 crew stays aboard Salyut for 22 days, a new record for a manned space mission.

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Science & Technology Weather & Climate

The dawn of Doppler radar

NSSL Doppler RadarThe National Severe Storms Laboratory‘s 10cm Doppler weather radar begins full-time experimental operation in Norman, Oklahoma, just in time for the region’s active severe weather season. A surplus Air Force radar left over from the Distant Early Warning radar network (also known as the DEW Line) is installed and housed in a facility that’s also made of military surplus parts. There is no real-time display at first: researchers and meteorologists store the Doppler radar’s observations on computer tape that has to be processed and printed months after the fact, and compared to archived records from the existing WSR-57 radar at Norman.

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Uncrewed Spaceflight Zond

N1 Flight #3

N1Though the race to the moon has already been lost, the Soviet space program continues to refine its giant N1 rocket, conducting extensive modifications to nearly all of its systems. The third N1 to lift off almost immediately loses directional control, forcing ground controllers to signal it to self-destruct less than a mile off the ground. Its cargo is an unmanned Soyuz/Korabl combo – the Soviet answer to the Apollo command/service module and landing module – though this time there is no launch escape system, so the vehicle is destroyed along with its booster.

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Crewed Spaceflight Soyuz

Soyuz 11: all hands lost

Soyuz 11After a record-setting 22 day stay about Soviet space station Salyut 1, the crew of Soyuz 11 prepares to return home. As they undock and fire their retro rockets to bring their vehicle out of orbit, Soyuz depressurizes without warning, killing the crew – Georgi Dobrovolski, Vladislav Volkov and Viktor Patsayev – within a minute. (The cramped design of the Soyuz cabin makes no allowances for cosmonauts to wear spacesuits.) Soyuz flights will be grounded for two years until the vehicle can be redesigned to prevent another tragedy. Two members of the grounded prime crew, Alexei Leonov (the first man to walk in space) and Valery Kubasov, are later reassigned to the international Apollo-Soyuz mission in 1975.